Micro125 UG
Micro125 UG
Micro125 UG
Warranty
For details on the Lantronix warranty replacement policy, please go to our Web site at
www.lantronix.com/support/warranty.
Contacts
Lantronix Corporate Headquarters
7535 Irvine Center Drive
Suite 100
Irvine, CA 92618, USA
Sales Offices
For a current list of our domestic and international sales offices, go to the Lantronix web site at
www.lantronix.com/about/contact.
Disclaimer
Operation of this equipment in a residential area is likely to cause interference, in which case the
user, at his or her own expense, will be required to take whatever measures may be required to
correct the interference.
Note: Changes or modifications to this device not explicitly approved by Lantronix will void the
user's authority to operate this device.
All information contained herein is provided “AS IS.” Lantronix undertakes no obligation to update
the information in this publication. Lantronix does not make, and specifically disclaims, all
warranties of any kind (express, implied or otherwise) regarding title, non-infringement, fitness,
quality, accuracy, completeness, usefulness, suitability or performance of the information
provided herein. Lantronix shall have no liability whatsoever to any user for any damages, losses
and causes of action (whether in contract or in tort or otherwise) in connection with the user’s
access or usage of any of the information or content contained herein. The information and
specifications contained in this document are subject to change without notice.
For the latest revision of this product document, please check our online documentation at
www.lantronix.com/support/documentation.
2. Introduction 10
Capabilities ________________________________________________________ 10
Applications ________________________________________________________ 10
Configuration Methods _______________________________________________ 11
Addresses and Port Numbers __________________________________________ 11
Hardware Address _______________________________________________ 11
IP Address _____________________________________________________ 11
Port Numbers ___________________________________________________ 11
3. Getting Started 12
Physically Connecting the Unit _________________________________________ 12
Required Information_________________________________________________ 13
Hardware Address _______________________________________________ 13
IP Address _____________________________________________________ 13
12. Troubleshooting 67
Problems and Error Messages _________________________________________ 67
List of Tables
Table 1-1 Micro125 Part Numbers _______________________________________ 9
Table 7-1. BootP/DHCP/AutoIP options __________________________________ 38
Table 7-2. Standard IP Network Netmasks _______________________________ 39
Table 8-1. Interface Mode Options ______________________________________ 42
Table 8-2. Common Interface Mode Settings ______________________________ 42
Table 8-3. Interface Mode Options ______________________________________ 43
Table 8-4. Flow Control Options ________________________________________ 43
Table 8-5. Reserved Port Numbers _____________________________________ 43
Table 8-6. Connect Mode Options ______________________________________ 44
Table 8-7. Manual Connection Address Example __________________________ 46
Table 8-8. Modem Modes _____________________________________________ 47
Table 8-9. Modem Mode Messages _____________________________________ 48
Table 8-10. Modem Mode Commands ___________________________________ 49
Table 8-11. Disconnect Mode Options ___________________________________ 50
Table 8-12. Flush Mode Options ________________________________________ 51
Table 8-13. Pack Control Options _______________________________________ 52
Table 9-1. Expert Settings: Default Values ________________________________ 54
Table 10-1. Firmware Files ____________________________________________ 61
Table 11-1. Monitor Mode Commands ___________________________________ 65
Table 11-2. Command Response Codes _________________________________ 66
Chapter Summary
The remaining chapters in this guide include:
Chapter Description
2: Introduction Describes the main features of the Micro125 and the protocols it
supports.
3: Getting Started Provides information for physically connecting your unit.
4: Using the DeviceInstaller Utility Provides information for getting your unit up and running, using the
DeviceInstaller utility to assign an IP address.
5: Configuration Using Web Details using the Web-Manager to set parameters such as port and
Manager server properties.
6: Configuration via Telnet or Serial Provides instructions for accessing Setup Mode (command line
Port (Setup Mode) interface) using a Telnet connection through the network or a
terminal or terminal emulation program through the serial port.
7: Setup Mode: Server Details the network (server) settings
Configuration
8: Setup Mode: Channel Details the serial port settings.
Configuration
9: Setup Mode: Advanced Settings Details expert, and security settings and explains how to reset the
unit to factory default values.
10: Firmware Upgrades Provides instructions for obtaining the latest firmware and updating
the Micro125 device.
11: Monitor Mode Provides instructions for accessing and using the command line
interface for monitoring the network and diagnosing problems.
12: Troubleshooting Describes common problems and error messages and how to
contact Lantronix Technical Support.
A: Lantronix Technical Support Provides information on how to contact Lantronix Technical Support.
B: Binary to Hexadecimal Provides instructions for converting binary numbers to hexadecimals.
Conversions
Additional Documentation
Visit the Lantronix Web site at www.lantronix.com/support/documentation for the latest
documentation and the following additional documentation.
Document Description
Micro125 Integration Guide Provides information about the Micro125 hardware, testing the
Micro125 using the evaluation board, and integrating the Micro125
into your product.
Com Port Redirector User Guide Provides information on using the Lantronix Windows based utility
to create a secure virtual com port.
DeviceInstaller Online Help Provides information on using the DeviceInstaller utility to
configure IP addresses and locate Lantronix devices on the
network.
“Live” Tutorials on the Lantronix Explain and demonstrate assigning an IP address to the UDS and
Web Site (English) setting up the UDS and Com Port Redirector. See
http://ltxfaq.custhelp.com/app/answers/detail/a_id/1119
Part Numbers
Micro 125 embedded device server part numbers are listed below.
Capabilities
The Micro125 device server has the following capabilities:
Connects devices through a TCP data channel or through a Telnet connection to computers
or to another device server. The Micro125 also supports UDP datagrams.
Contains a web [HTTP] server allowing presentation of custom content and easy
configuration through a browser.
Applications
The Micro125 device server connects serial devices such as those listed below to Ethernet
networks using the IP protocol family.
ATM machines
CNC controllers
Data collection devices
Environmental sensors
Universal Power Supply (UPS) management units
Telecommunications equipment
Data display devices
Security alarms and access control devices
Handheld instruments
Modems
Time/attendance clocks and terminals
The Micro125 device server uses the Internet Protocol (IP) for network communications. It uses
the Transmission Control Protocol (TCP) to assure that no data is lost or duplicated, and that
everything sent to the connection arrives correctly at the target.
ARP, UDP, TCP, ICMP, Telnet, TFTP, AutoIP, DHCP, HTTP, and SNMP for network
communications and management.
TCP, UDP, and Telnet for connections to the serial port.
TFTP for firmware and web page updates.
IP for addressing, routing, and data block handling over the network.
User Datagram Protocol (UDP) for typical datagram applications in which devices interact
with other devices without maintaining a point-to-point connection.
Configuration Methods
For the unit to operate correctly on a network, it must have a unique IP address on the network.
There are three basic methods for logging into the device server to assign an IP address and
configure the unit:
DeviceInstaller: Assign an IP address and view the current Micro125 configuration using a
Graphical User Interface (GUI) on a PC attached to a network. (See Using the DeviceInstaller
Utility.)
Web-Manager: Through a web interface, configure the Micro125 and its settings using the
Micro125’s Web-Manager. (See Configuration Using Web Manager
Serial & Telnet Ports: There are two approaches to accessing Serial Mode. Make a Telnet
connection to the network port (9999) or connect a terminal (or a PC running a terminal emulation
program) to the unit’s serial port. (See Configuration via Telnet or Serial Port (Setup Mode).)
Hardware Address
The hardware address is also referred to as the Ethernet address or the MAC address.
Note: Make note of the MAC address. It is needed to locate the Micro125 using the
DeviceInstaller utility.
IP Address
Every device connected to an IP network must have a unique IP address. This address is used to
reference the specific unit. The Micro125 is automatically assigned an IP address on DHCP-
enabled networks, as it is DHCP-enabled by default.
Port Numbers
Every TCP connection and every UDP datagram is defined by a destination IP address and a port
number. For example, a Telnet application commonly uses port number 23. A port number is
similar to an extension on a phone system.
The unit's serial channel (port) can be associated with a specific TCP/UDP port number. Port
number 9999 is reserved for access to the unit's Setup (configuration) Mode window. Ports 0-
1024 are reserved as well. For more information on reserved port numbers, see
Table 8-5. Reserved Port Numbers.
Supply power to your unit using the power supply that was included in the packaging.
Note: The required input voltage for the Micro125 is 5VDC (+/-5% at ~200 mA). Other devices
may require a different voltage.
Required Information
Hardware Address
You need to know the unit’s hardware address (also known as the MAC address), which is on the
product label. It is in the format:
Or
IP Address
Your device server must have a unique IP address on your network. The systems administrator
generally provides the IP address and corresponding subnet mask and gateway. The IP address
must be within a valid range, unique to your network, and in the same subnet as your PC.
You have several options for assigning an IP address to your unit. We recommend that you
manually assign the IP address over the network using the DeviceInstaller utility software, which
is described in Using the DeviceInstaller Utility.
For instructions on using the DeviceInstaller application to configure the IP address and
related settings or for more advanced features, see the DeviceInstaller Online Help.
3. Respond to the installation wizard prompts. (If prompted to select an installation type, select
Typical).
Assigning an IP Address
The unit’s IP address must be configured before it can work correctly on a network. You have
several options for assigning an IP to your unit. We recommend that you manually assign the IP
address over the network using the DeviceInstaller utility.
Note: To use a serial connection instead of an Ethernet connection to configure the device, see
Chapter 6: Configuration via Telnet or Serial Port (Setup Mode).
The unit’s IP address is normally set to 0.0.0.0 at the factory. The hardware address is on the
product label. The unit is DHCP enabled as the default.
Note: If the unit already has an IP address (e.g., DHCP has assigned an IP address), click the
Search icon and select the unit from the list of Lantronix device servers on the local network.
3. If prompted, enter the hardware address (on the product label) and click Next.
5. Enter the IP address. The Subnet mask displays automatically based on the IP address; if
desired, you may change it. On a local network, you can leave the Default gateway blank (all
zeros). Click Next.
6. Click the Assign button and wait several seconds until a confirmation message displays.
Click Finish.
7. Select the device from the main window list and select Ping from the Tools menu. The Ping
Device dialog box shows the IP address of the selected unit.
8. From the Tools menu, click the Ping button. The results display in the Status window. Click
the Clear Status button to clear the window so you can ping the device again.
Note: If you do not receive “Reply” messages, make sure the unit is properly attached to the
network and that the IP address assigned is valid for the particular network segment you are
working with. If you are not sure, check with your systems administrator.
9. Click the Close button to close the dialog box and return to the main window.
2. Click the Micro folder. The list of available Lantronix Micro-type devices displays.
3. Expand the list of Micro125 devices by clicking the + symbol next to the Micro125 icon. Select
the Micro125 unit by clicking on its IP address to view its configuration.
2. In the right pane, click the Device Details tab. The current Micro125 configuration displays:
Supports Non-configurable field. Displays False, indicating configurable pins are not
Configurable Pins available on the Micro125.
Supports Email Non-configurable field. Displays False, indicating email triggers are not
Triggers available on the Micro125.
Supports AES Data Non-configurable field. Displays True if the Micro125 unit supports AES
Stream encryption.
Supports 485 Non-configurable field. Displays True, indicating the Micro125 supports the
RS-485 protocol.
Supports 921K Baud Non-configurable field. Displays False. Micro125 does not support baud
Rate rates up to 921 Kbps.
Supports HTTP Non-configurable field. Displays True.
Server
Supports HTTP Non-configurable field. Displays True.
Setup
Supports 230K Baud Non-configurable field. Displays True.
Rate
Supports GPIO Non-configurable field. Displays False, indicating the Micro125 does not
support communication via General Purpose Input Output (GPIO).
The unit’s configuration is stored in nonvolatile memory and is retained without power. You can
change the configuration at any time. The unit performs a reset after you change and store the
configuration.
In this chapter, we describe how to configure the Micro125 using Web-Manager, Lantronix’s
browser-based configuration tool. (For information on using Setup Mode, our command line
configuration interface, see Chapter 6: Configuration via Telnet or Serial Port (Setup Mode).
Note: The examples in this section show a typical device. Your device may have different
configuration options.
Note: For more information on the DeviceInstaller application, see Chapter 4: Using the
DeviceInstaller Utility.
1. Run the DeviceInstaller application and search for the list of available Lantronix device
servers.
2. Click on the Micro folder. The list of available Micro type devices displays.
3. Expand the list of Micro125 devices by clicking the + symbol next to the Micro125 icon.
6. To view the Micro125’s Web-Manager in the current DeviceInstaller window, click the Go
button. To open the Web-Manager in a web browser, click the External Browser button.
Note: Alternatively, to open Web-Manager, open your web browser and enter the IP address of
the Micro125.
Note: We recommend that you always use the enhanced password setting and
create a strong 16 character password. See Security Settings (Option 6) on page 55.
Network Configuration
The unit’s network values display when you select Network from the main menu. The following
sections describe the configurable parameters on the Network Settings page.
Network Mode
1. Click Network from the main menu.
2. Select Wired Only. It is the only choice for Network Mode as it enables the Ethernet network
connectivity.
BOOTP Select Enable to permit the Bootstrap Protocol (BOOTP). server to assign
the IP address from a pool of addresses automatically. Enable is the
default.
DHCP Select Enable to permit the Dynamic Host Configuration Protocol (DHCP) to
assign a leased IP address to the Micro125 unit automatically. Enable is the
default.
AutoIP Select Enable to permit the Micro125 to generate an IP in the 169.254.x.x
address range with a Class B subnet. Enable is the default.
DHCP Host Name Enter the desired host name for the Micro125.
Note: Disabling BOOTP, DHCP, and AutoIP (all three checkboxes) is not advised as the only
available IP assignment method will then be ARP or serial port.
Ethernet Configuration
You must specify the speed and direction of data transmission.
Auto Negotiate With this option, the Ethernet port auto-negotiates the speed and duplex
with the hardware endpoint to which it is connected. This is the default.
If this option is not selected, the complete the fields that become
available:
Speed: The speed of data transmission. The default is 100
Mbps.
Duplex: The direction of data transmission. The default is Full.
Server Configuration
The unit’s server values display when you select Server from the main menu. The following
sections describe the configurable parameters on the Server Settings page.
Server Configuration
Server Configuration Description
Settings
Enhanced Password Select whether to enable enhanced password:
Enable: selecting this option enables advanced password
creation, allowing you to create passwords up to 16 bytes in length.
Disable: selecting this option disables advanced password
creation, allowing you to create basic passwords up to 4 bytes in
length.
Telnet/Web Manager Enter the password required for Telnet configuration and Web
Password Manager access.
Retype Password Re-enter the password required for Telnet configuration and Web
Manager access.
Advanced
Advanced Settings Description
ARP Cache Timeout When the unit communicates with another device on the network, it
(secs) adds an entry into its ARP table. ARP Cache timeout defines the
number of seconds (1-600) before it refreshes this table.
TCP Keepalive (secs) TCP Keepalive time defines how many seconds the unit waits during
an inactive connection before checking its status. If the unit does not
receive a response, it drops that connection. Enter a value between
0 and 60 seconds. 0 disables keepalive. The default setting is 45.
Monitor Mode @ Bootup Select Disable to disable entry into the monitor mode using the 'yyy'
or 'xx1' key sequence at startup. This field prevents the unit from
entering monitor mode by interpreting the stream of characters that
are received during the device server's initialization at startup.
HTTP Server Port This option allows the configuration of the web server port number.
The valid range is 1-65535. The default port is 80.
Config Server Port Not applicable for this product.
MTU Size The Maximum Transmission Unit (MTU) is the largest physical
packet size a network can transmit for TCP and UDP. Enter between
512 and 1400 bytes. The default is 1400 bytes.
TCP Re-transmission The desired TCP re-transmission timeout value. If the ACK is not
timeout (ms) received for a packet sent from the Micro125 device, then the unit
will retransmit the data. The valid range is 500-4000 msec.
The host list supports a minimum of 1 and a maximum of 12 entries. Each entry contains an IP
address and a port number.
Note: The host list is disabled for Manual and Modem Mode. The unit does not accept a data
connection from a remote device when the hostlist option is enabled.
Retry Settings
Retry Settings Description
Retry Counter Enter the value for the number of times the Micro125 should attempt to
retry connecting to the host list.
Retry Timeout Enter the duration (in milliseconds) the Micro125 should abandon
attempting a connection to the host list.
Host Information
Host Information Description
Settings
Serial Settings
To configure the channel’s serial settings:
1. On the main menu, click Serial Settings (under Channel 1 or Channel 2) to display the
Serial Settings window.
Figure 5-5. Channel Serial Settings
Channel 1 or Channel 2
Channel Setting Description
Disable Serial Port Available on Channel 2 settings only. When selected, disables
communication through the serial port. The Disable Serial Port
option will always be disabled for Channel 1.
Port Settings
Port Settings Description
Protocol From the drop-down menu, select the protocol type for the
selected channel.
Flow Control Flow control manages data flow between devices in a network to
ensure it is processed efficiently. Too much data arriving before a
device is prepared to manage it causes lost or retransmitted data.
None is the default.
Baud Rate The unit and attached serial device, such as a modem, must agree
on a speed or baud rate to use for the serial connection. Valid
baud rates are 300, 600, 1200, 2400, 4800, 9600 (default), 19200,
38400, 57600, 115200 or 230400.
Data Bits Indicates the number of bits in a transmitted data package. The
default is 8.
Parity Checks for the parity bit. The default is None.
Stop Bits The stop bit follows the data & parity bits in serial communication.
It indicates the end of transmission. The default is 1.
Pack Control
Pack Control Settings Description
With Active Connect Select Yes to clear the input buffer with a connection that is
initiated from the device to the network. The default is No.
With Passive Connect Select Yes to clear the input buffer with a connection initiated from
the network to the device. The default is No.
At Time of Disconnect Select Yes to clear the input buffer when the network connection
to or from the device is disconnected. The default is No.
With Active Connect Select Yes to clear the output buffer with a connection that is
initiated from the device to the network. The default is No.
With Passive Connect Select Yes to clear the output buffer with a connection initiated
from the network to the device. The default is No.
At Time of Disconnect Select Yes to clear the output buffer when the network connection
to or from the device is disconnected. The default is No.
1. On the main menu, click Connection. The Connection Settings window for the channel
displays.
Figure 5-6. TCP Connection Settings
Connect Protocol
Connect Protocol Setting Description
Accept Incoming Select Yes to accept incoming connections. The default is Yes.
Active Connect Select None to disable Active Connect. Otherwise, indicate the
connection type from the drop-down list:
With Any Character: Attempts to connect when any
character is received from the serial port.
With Active Mdm Ctrl In: Accepts external connection
requests only when the Modem Control In input is asserted.
With Start Character: Attempts to connect when it receives
a specific start character from the serial port. The default start
character is carriage return.
Manual Connection: Attempts to connect when directed by
a command string received from the serial port.
Auto Start: Automatically: connects to the remote IP address
and port after booting up.
Start Character If Active Connect is set to With Start Character, enter the start
character in this field.
Modem Mode Indicates the on-screen response type when in Modem Mode (if
Modem Mode is enabled).
Show IP Address After RING Indicates whether to display the remote IP address upon
connection. The default setting is Yes.
Endpoint Configuration
Endpoint Configuration Description
Settings
Common Options
Common Option Settings Description
Telnet Com Port Cntrl This field is available for configuration only when Active Connect
is set to None. Select Enable to permit Telnet communication to
the unit. The Telnet Com Port Cntrl feature is used in
conjunction with the Com Port Redirector (CPR) utility. (See the
CPR Online Help for details.)
Terminal Name This field is available for configuration only when Telnet Mode is
set to Enable.
Use the terminal name for the Telnet terminal type. Enter only
one name. When this option is enabled, the unit also reacts to the
end of record (EOR) and binary options, which can be used for
applications such as terminal emulation to IBM hosts.
Connect Response A single character is transmitted to the serial port when there is a
change in connection state. Default setting is None.
Use Hostlist If this option is set to True, the device server scrolls through the
host list until it connects to a device listed in the host list table.
Once it connects, the unit stops trying to connect to any others. If
this connection fails, the unit continues to scroll through the table
until it connects to another IP in the host list.
The host list is disabled for Manual Mode and for Modem Mode.
The unit will not accept a data connection from a remote device
when the host list option is enabled.
LED Select Blink for the status LEDs to blink upon connection or
None for no LED output.
Disconnect Mode
Disconnect Mode Settings Description
On Mdm_Ctrl_In Drop Set to Yes for the network connection to or from the serial port to
disconnect (drop) when Modem Control In transitions from an
asserted state to not asserted state. The default setting is No.
Hard Disconnect When set to Yes, the TCP connection closes even if the remote
site does not acknowledge the disconnect request.
Check EOT (Ctrl-D) Select Yes to drop the connection when Ctrl-D or Hex 04 is
detected. Both Telnet Com Port Cntrl and Check EOT
(Ctrl+ D) must be enabled for Disconnect with EOT to function
properly. Ctrl+D is only detected going from the serial port to the
network. The default setting is No.
Inactivity Timeout Use this parameter to set an inactivity timeout. The unit drops the
TCP connection to port 10001/10002* if there is no activity on the
serial line before the set time expires. Enter time in the format
mm:ss, where m is the number of minutes and s is the number of
seconds. To disable the inactivity timeout, enter 00:00.
Note*: The default port number for Port 1 is 10001 and 10002 for
Port 2. However, port numbers may be set to a different value.
1. On the main menu, click Connection. The Connection Settings window for the selected
channel displays.
Connect Protocol
Connection Protocol Description
Datagram Mode
Datagram Mode Description
Settings
Datagram Type Configures the remote IP or network broadcast address and the
remote port. Enter 01 for directed or broadcast UDP. The default
setting is 00.
Accept Incoming Select Yes to accept incoming UDP datagrams.
Endpoint Configuration
Endpoint Configuration Description
Settings
Apply Settings
1. To save and apply the configuration changes to the device server, click the Apply Settings
button.
Note: Clicking OK on each page does not change the configuration on the device.
Clicking the OK button tells the MatchPort what changes to use; the Apply Settings
makes the changes permanent and reboots the Micro125.
Apply Defaults
1. Click the Apply Defaults button to set the device server back to the default settings. For
details see Default Settings on page 58.
Note: Detailed information about other setup methods is available from your Lantronix Sales
Associate.
The unit’s configuration is stored in nonvolatile memory and is retained without power. You can
change the configuration at any time. The unit performs a reset after the configuration has been
changed and stored.
This chapter tells you how to access Setup Mode and the general procedure for using it. To
complete the configuration, continue with Chapters 7 Setup Mode: Server Configuration, 8 Setup
Mode: Channel Configuration, and 9 Setup Mode: Advanced Settings.
Note: The menus in the configuration chapters show a typical device. Your device may have
different configuration options.
Telnet Connection
To configure the unit over the network, establish a Telnet connection to port 9999.
Note: You can also use the DeviceInstaller application to access Telnet. Select the device from
the main window list, and click the Telnet Configuration tab. Skip steps 1 and 2.
1. From the Windows Start menu, click Run and type the following command, where x.x.x.x is
the IP address, and 9999 is the unit’s fixed network configuration port number:
Windows: telnet x.x.x.x 9999
UNIX: telnet x.x.x.x:9999
3. To enter Setup Mode, press Enter within 5 seconds. The configuration settings display,
followed by the Change Setup menu.
Figure 6-2. Setup Menu Options
Change Setup:
0 Server
1 Channel 1
2 Channel 2
5 Expert
6 Security
7 Defaults
8 Exit without save
9 Save and exit Your choice ? 0
4. Select an option on the menu by entering the number of the option in the Your choice ? field
and pressing Enter.
5. To enter a value for a parameter, type the value and press Enter, or to confirm a current
value, just press Enter.
6. When you are finished, save the new configuration (option 9). The unit reboots.
1. Connect a console terminal or PC running a terminal emulation program to your unit's serial
port.
2. Set the terminal emulator serial port settings to 9600 baud, 8 bits, no parity, 1 stop bit, no flow
control.
Note: The Micro125 always uses these serial port settings on boot-up.
3. Reset the Micro125 unit by cycling the unit's power (turning the power off and back on).
Immediately upon resetting the device, enter three lowercase x characters (xxx).
Note: The easiest way to enter Setup Mode is to hold down the x key at the terminal (or
emulation) while resetting the unit. You must do this within three seconds of resetting the
Micro125.
At this point, the screen display is the same as when you use a Telnet connection. To continue,
go to step 4, above under the section, Telnet Connection.
To save all changes and reboot the device, select option 9 Save and exit from the Change
Setup menu. All values are stored in nonvolatile memory.
To exit the configuration mode without saving any changes or rebooting, select option 8 Exit
without save from the Change Setup menu.
IP Address
If DHCP is not used to assign IP addresses, enter the IP address manually. The IP address must
be set to a unique value in the network. Enter each octet and press Enter between each section.
The current value displays in parentheses.
If DHCP is used, the third octet of the IP address sets the BootP/DHCP/AutoIP options. The
following table shows the bits you can manually configure to force the Micro125 to disable AutoIP,
DHCP, or BootP. To disable an option, set the appropriate bit.
Options Bit
AutoIP 0
DHCP 1
BootP 2
For example, if the third octet is 0.0.5.0, the AutoIP and BootP options are disabled; only DHCP is
enabled. (The value 5 results from adding the binary equivalents of 0 and 2.) This is the most
common setting when using DHCP.
The unit prompts for the number of host bits to be entered, then calculates the netmask, which
appears in standard decimal-dot notation (for example, 255.255.255.0) when the saved
parameters display.
A 24 255.0.0.0
B 16 255.255.0.0
C 8 255.255.255.0
Please protect your device from unauthorized access and follow the instructions below:
Enable the enhanced password setting and create a strong 16-character password. For
details, see Security Settings (Option 6) on page 55.
Note: We do not recommend that you only use the 4-character basic password as it does
not offer sufficient security. Using no password is very dangerous.
DHCP Name
If a DHCP server has automatically assigned the IP address and network settings, you can
discover the unit by using the DeviceInstaller network search feature.
There are three methods for assigning DHCP names to the unit.
Default DHCP Name: If you do not change the DHCP name, and you are using an IP of 0.0.0.0,
then the DHCP name defaults to CXXXXXX (XXXXXX is the last 6 digits of the MAC address
shown on the label on the bottom/side of the unit). For example, if the MAC address is 00-20-4A-
12-34-56, then the default DHCP name is C123456.
Custom DHCP Name: You can create your own DHCP name. If you are using an IP address of
0.0.0.0, then the last option in Server configuration is Change DHCP device name. This option
allows you to change the DHCP name to an alphanumeric name (LTX in our example).
Numeric DHCP Name: You can change the DHCP name by specifying the last octet of the IP
address. When you use this method, the DHCP name is LTXYY where YY is what you chose for
the last octet of the IP address. If the IP address you specify is 0.0.0.12, then the DHCP name is
LTX12. This method only works with 2 digit numbers (01-99).
Note: The directions for configuring Channel 1 provided below may also be used for Channel 2.
Channels
Select Channel 1 (option 1) from the Change Setup menu to define how the serial port responds
to network and serial communications. The following sections describe the configurable
parameters within the Channel configuration menu.
Baudrate (9600) ?
I/F Mode (4C) ?
Flow (00) ?
Port No (10002) ?
ConnectMode (C0) ?
Send '+++' in Modem Mode (Y) ?
Show IP addr after 'RING' (Y) ?
Auto increment source port (N) ?
Remote IP Address : (000) .(000) .(000) .(000)
Remote Port (0) ?
DisConnMode (00) ?
FlushMode (00) ?
DisConnTime (00:00) ?:
SendChar 1 (00) ?
SendChar 2 (00) ?
Baudrate
The unit and attached serial device, such as a modem, must agree on a speed or baud rate to
use for the serial connection. Valid baud rates are 300, 600, 1200, 2400, 4800, 9600 (default),
19200, 38400, 57600, 115200, and 230400 bits per second. The current value is displayed in
parentheses. Entering a baud rate of 00 in channel settings in a telnet sessions disables the
serial port.
Baudrate (9600) ?
Note: All bit positions in the table that are blank represent “don’t care” bits for that particular
option, which can be set to either a 0 or 1 value.
7 Bit 1 0
8 Bit 1 1
No Parity 0 0
Even Parity 1 1
Odd Parity 0 1
1 stop bit 0 1
(1)
2 stop bits 1 1
(1) 2 stop bits are implemented by the software. This might influence performance.
The following table demonstrates how to build some common Interface Mode settings:
I/F Mode
Additional settings for RS-422 4-wire and RS-485 2-wire are available on the
Micro125. However, this feature is only supported on channel 1.
Note: All bit positions in the table that are blank represent “don’t care” bits, for that particular
option, which can be set to either a 0 or 1 value.
RS-485 2-wire 1 1
Flow
Flow control sets the local handshaking method for stopping serial input/output.
Flow (00) ?
No flow control 00
XON/XOFF flow control 01
Hardware handshake with RTS/CTS lines 02
XON/XOFF pass characters to host 05
Port Number
The setting represents the source port number in TCP connections. It is the number that identifies
the channel for remote initiating connections.
Port No (10001) ?
The default setting for Port 1 is 10001. The range is 1-65535, except for the following reserved
port numbers:
WARNING: We recommend that you not use the reserved port numbers for this
setting as incorrect operation may result.
Use Port 0 for the outgoing local port to change with each connection. The port range is 50,000 to
59,999. Each subsequent connection increments the number by 1 (it wraps back around to
50,000).
Only use this automatic port increment feature to initiate a connection using TCP. Set the port to
a non-zero value when the unit is in a passive mode or when using UDP instead of TCP.
Connect Mode
Connect Mode defines how the unit makes a connection, and how it reacts to incoming
connections over the network.
ConnectMode (C0) ?
Note: All bit positions in the table that are blank represent “don’t care” bits, for that particular
option, which can be set to either a 0 or 1 value.
Always Accept 1 1 0
b) Response
Nothing (quiet) 0
c) Active Startup
No active startup 0 0 0 0
Manual connection 0 1 0 0
Autostart 0 1 0 1
Hostlist 0 0 1 0
d) Datagram Type
Directed UDP 1 1 0 0
e) Modem Mode
No Echo 0 0 1 1
a) Incoming Connection
Incoming Connection Mode Description
b) Response
Response Mode Description
Character Response A single character is transmitted to the serial port when there is a
change in connection state:
C = connected, D = disconnected, N = host unreachable.
The IP address of the host connecting to the CoBos device will
be provided when you use verbose mode.
c) Active Startup
Active Startup Mode Description
Baudrate (9600) ?
I/F Mode (4C) ?
Flow (00) ?
Port No (10001) ?
ConnectMode (25) ?
Send '+++' in Modem Mode (Y) ?
Auto increment source port (N) ?
Hostlist :
01. IP : 172.019.000.001 Port : 00023
02. IP : 172.019.000.002 Port : 03001
03. IP : 172.019.000.003 Port : 10001
DisConnMode (00) ?
FlushMode (00) ?
DisConnTime (00:00) ?:
SendChar 1 (00) ?
SendChar 2 (00) ?
1. Enter a Connect Mode of 0x20 (2X), where X is any digit. The menu shows you a list of
current entries already defined in the product.
2. To delete, modify, or add an entry, select Yes. If you enter an IP address of 0.0.0.0, that entry
and all others after it are deleted.
3. After completing the hostlist, repeat the previous step if necessary to edit the hostlist again.
4. For Retrycounter, enter the number of times the Lantronix unit should try to make a good
network connection to a hostlist entry that it has successfully ARPed. The range is 1-15, with
the default set to 3.
5. For Retrytimeout, enter the number of seconds the unit should wait before failing an
attempted connection. The time is stored as units of milliseconds in the range of 10-65535.
The default is 250.
d) Datagram Type
Datagram Type Description
Directed UDP When selecting this option, you are prompted for the Datagram type. Enter 01
for directed or broadcast UDP. Datagrams of type 01 can be sent as a
broadcast by enabling the Send as Broadcast option. The default is not to
broadcast. When the UDP option is in effect, the unit never attempts to initiate
a TCP connection because it uses UDP datagrams to send and receive data.
e) Modem Mode
In Modem (Emulation) Mode, the unit presents a modem interface to the attached serial device. It
accepts AT-style modem commands and handles the modem signals correctly.
To select Modem Mode, set the Connect Mode to C6 (no echo), D6 (echo with full verbose), D7
(echo with numeric response), CF (modem responses only, numeric response), or CE (modem
responses only, full verbose).
Note: If the unit is in Modem Mode, and the serial port is idle, the unit can still accept network
TCP connections to the serial port if Connect Mode is set to C6 (no echo), D6 (echo with full
verbose), D7 (echo with numeric response, CF (modem responses only, numeric response), or
CE (modem responses only, full verbose).
Without Echo In Modem Mode, echo refers to the echo of all of the characters
entered in command mode; it does not mean to echo data that is
transferred. Quiet Mode (without echo) refers to the modem not
sending an answer to the commands received (or displaying what was
typed).
Data Echo & Modem Full Verbose: The unit echoes modem commands and responds to a
Response command with a message string shown in the table below.
Numeric Response: The unit echoes modem commands and
responds to a command with a numeric response.
Modem Responses Full Verbose: The unit does not echo modem commands and
Only responds to a command with a message string shown in the table
below.
Numeric Response: The unit does not echo modem commands and
responds to a command with a numeric response.
Message Meaning
Full Verbose
OK Command was executed without error.
CONNECT A network connection has been established.
NO CARRIER A network connection has been closed.
A remote device, having IP address n.n.n.n, is connecting to this
RING n.n.n.n.
device.
Numeric Response
0 OK
1 Connected
2 Ring
3 No Carrier
4 Error
Received commands must begin with the two-character sequence AT and be terminated with a
carriage return character.
The unit ignores any character sequence received not starting with AT, and only recognizes and
processes single AT-style commands. The unit treats compound AT commands as unrecognized
commands.
If the Full Verbose option is in effect, the unit responds to an unrecognized command string that
is otherwise formatted correctly (begins with AT and ends with carriage return) with the "OK"
message and takes no further action.
If the Numeric Response option is in effect, the unit responds to an unrecognized command
string that is otherwise formatted correctly with the "OK" message and takes no further action.
When an active connection is in effect, the unit transfers data and does not process commands
received from the serial interface.
When an active connection is in effect, the unit terminates the connection if it receives the
following sequence from the attached serial device:
No serial data is received for one second after the last + character. At this time, the unit
responds affirmatively per the selected echo/response mode.
The character string ATH is received, terminated with a carriage return. The unit responds
affirmatively according to the selected echo/response mode and drops the network
connection. The serial interface reverts to accepting command strings.
If this sequence is not followed, the unit remains in data transfer mode.
Forces the unit into Monitor Mode if a remote IP address and port
ATD0.0.0.0
number are defined within the unit.
Forces the unit into Monitor Mode if a remote IP address and port
ATD or ATDT
number are not defined within the unit.
n>1-9 is invalid.
Enables or disables character echo and responses.
n=0 disables character echo and responses.
ATEn
n=1 enables character echo and responses.
Enables numeric response or full verbose.
n=0 enables numeric response.
ATVn
n=1 enables full verbose.
Note: The unit recognizes these AT commands as single commands such as ATE0 or ATV1; it
does not recognize compound commands such as ATE0V.
Disable or enable the Micro125’s ability to send the escape sequence. The default is Y (Yes)
(send the escape sequence).
Disable or enable the Micro125's ability to show the IP address after RING in Modem Mode. The
default is Y (Yes), to show the IP address.
Y (Yes) auto increment the source port. The Micro125 increments the port number used with
each new connection.
Remote IP Address
This is the destination IP address used with an outgoing connection.
Note: This option does not display when Hostlist is enabled from the ConnectMode prompt (see
Connect Mode on page 44 for more information).
Remote Port
You must set the remote TCP port number for the unit to make outgoing connections. This
parameter defines the port number on the target host to which a connection is attempted.
To connect an ASCII terminal to a host using the unit for login purposes, use the remote port
number 23 (Internet standard port number for Telnet services).
Note: This option does not display when Hostlist is enabled from the ConnectMode prompt (see
Connect Mode on page 44 for more information).
DisConnMode
This setting determines the conditions under which the unit will cause a network connection to
terminate.
DisConnMode (00) ?
Notes:
In DisConnMode (Disconnect Mode), Modem Control In drop either drops the connection or
is ignored.
All bit positions in the table that are blank represent “don’t care” bits, for that particular option,
which can be set to either a 0 or 1 value.
Table 8-11. Disconnect Mode Options
FlushMode (00) ?
Note: All bit positions in the table that are blank represent “don’t care” bits, for that particular
option, which can be set to either a 0 or 1 value.
Function 7 6 5 4 3 2 1 0
Input Buffer (Serial to Network)
Clear with a connection initiated from the device to the network 1
Clear with a connection initiated from the network to the device 1
Clear when the network connection to or from the device
1
is disconnected
Output Buffer (Network to Serial)
Clear with a connection initiated from the device to the network 1
Clear with a connection initiated from the network to the device 1
Clear when the network connection to or from the device
1
is disconnected
Alternate Packing Algorithm (Pack Control)
Enable 1
Pack Control
The packing algorithms define how and when packets are sent to the network. The standard
algorithm is optimized for applications in which the unit is used in a local environment, allowing for
very small delays for single characters, while keeping the packet count low. The alternate packing
algorithm minimizes the packet count on the network and is especially useful in applications in a
routed Wide Area Network (WAN). Adjusting parameters in this mode can economize the network
data stream.
Pack control settings are enabled in Flush Mode. Set this value to 00 if you do not need specific
functions.
Note: All bit positions in the table that are blank represent “don’t care” bits, for that particular
option, which can be set to either a 0 or 1 value.
Option 7 6 5 4 3 2 1 0
Packing Interval
Interval: 12ms 0 0
Interval: 52ms 0 1
Interval: 250ms 1 0
Interval: 5sec 1 1
Trailing Characters
None 0 0
One 0 1
Two 1 0
Send Characters
Packing Interval
Packing Interval defines how long the unit should wait before sending accumulated characters.
This wait period is between successive network segments containing data. For alternate packing,
the default interval is 12 ms.
Trailing Characters
In some applications, CRC, Checksum, or other trailing characters follow the end-of-sequence
character; this option helps to adapt frame transmission to the frame boundary.
Send Characters
If 2-Byte Send Character Sequence is enabled, the unit interprets the sendchars as a 2-
byte sequence; if this option is not enabled, the unit interprets them independently.
If Send Immediately After Characters is not set, any characters already in the serial buffer
are included in the transmission after a "transmit" condition is found. If this option is set, the
unit sends immediately after recognizing the transmit condition (sendchar or timeout).
Note*: The default port number for Port 1 is 10001 and 10002 for Port 2. However, port
numbers may be set to a different value.
DisConnTime (00:00) ?:
To disable the inactivity timeout, enter 00:00. Range is 0 (disabled) to 5999 seconds (99 minutes,
59 seconds). Default is 0.
Send Characters
Enter up to two characters in hexadecimal representation in sendchar.
SendChar 1 (00) ?
SendChar 2 (00) ?
If the unit receives a character on the serial line that matches one of these characters, it sends
the character immediately, along with any awaiting characters, to the TCP connection. This action
minimizes the response time for specific protocol characters on the serial line (for example, ETX,
EOT). Setting the first sendchar to 00 disables the recognition of the characters. Alternatively, the
unit can interpret two characters as a sequence (see Pack Control on page 52).
With terminal type option enabled, the unit also reacts to the EOR (end of record) and binary
options, useful for applications like terminal emulation to IBM hosts.
Note: You can change the Enable alternate MAC setting using telnet or serial connections only. It
is not available through the Web-Manager.
CAUTION: Only an expert should change these parameters. You must definitely know the
consequences the changes might have.
MTU Size
The Maximum Transmission Unit (MTU) is the largest physical packet size a network can transmit
for TCP and UDP. Enter between 512 and 1400 bytes. The default is 1400 bytes.
If necessary, enable the alternate MAC address (if specified in the OEM setup record).
Note: You can change security settings by means of Telnet or serial connections only, not on the
Web-Manager. We recommend that you set security over the dedicated network or over the serial
setup to prevent eavesdropping.
CAUTION: Disabling both Telnet Setup and Port 77FE will prevent users from
accessing the setup menu from the network. Disabling Port 77FE also disables the
Web from configuring the device.
Disable SNMP
This setting allows you to disable the SNMP protocol on the unit for security reasons.
This setting defaults to the N (No) option. The Y (Yes) option disables access to Setup Mode by
Telnet (port 9999). It only allows access locally using the web pages and the serial port of the
unit.
Note: The default setting is the N (No) option, which enables remote configuration. You can
configure the unit by using the DeviceInstaller utility, web pages, Telnet, or serial configuration.
The Y (Yes) option disables remote configuration and web sites. The Y (Yes) option also disables
many of the GUI tools for configuring the unit, including the embedded WebManager tool.
Set 0 for Read & Write mode, and 1 for Read Only mode. Default value of this setting is Read-
Write(0).
If access mode is Read-only, then read operation can be done through port 77FE, if Read-Write
access is selected, then both read and write of data can be done through port 77FE.
Enable Encryption
Rijndael is the block cipher algorithm chosen by the National Institute of Science and Technology
(NIST) as the Advanced Encryption Standard (AES) to be used by the US government. The
Micro125 supports 128-, 192-, and 256-bit encryption key lengths.
Note: Configuring encryption should be done through a local connection to the serial port of the
Micro125, or via a secured network connection. Initial configuration information, including the
encryption key, is sent in clear text over the network.
2. When prompted, enter the encryption key length. The Micro125 supports 128-, 192-, and
256-bit encryption key lengths.
4. At the Enter Keys prompt, enter your encryption key. The encryption keys are entered in
hexadecimal. The hexadecimal values are echoed as asterisks to prevent onlookers from
seeing the key. Hexadecimal values are 0-9 and A-F.
For a 128-bit key length, enter 32 hexadecimal characters.
For a 192-bit key length, enter 48 hexadecimal characters.
For a 256-bit key length, enter 64 hexadecimal characters
5. Continue pressing Enter until you return to the Change Setup menu.
6. From the Change Setup menu, select option 9 to save and exit.
Encryption only applies to the port selected for data tunneling (default 10001), regardless of
whether you are using TCP or UDP.
Avoid using either the 4 character basic password setting or no password at all as they are not
secure options.
Baudrate 9600
I/F Mode 4C (1 stop bit, no parity, 8 bit, RS-232C)
Flow 00 (no flow control)
Port number 10001 (channel 1)
10002 (channel 2)
Connect Mode C0 (always accept incoming connection; no active
connection startup)
Send '+++' in Modem Mode Enabled
Show IP addr after 'RING' Enabled
Auto increment source port Disable
Hostlist retry counter 3
Hostlist retry timeout 250 (msec)
Start character for serial channel 1 0x0D (CR)
All other parameters 0
Disable SNMP No
SNMP community name public
Reloading Firmware
There are several ways to update the unit's internal operational code (*.ROM): using the
DeviceInstaller utility (the preferred way), using TFTP, or using the serial port. You can also
update the unit's internal Web interface (*.COB) using TFTP or the DeviceInstaller application.
Here are typical names for those files. Check the Lantronix web site for the latest versions and
release notes.
Please refer to the DeviceInstaller online Help for information about reloading firmware using the
DeviceInstaller application. The other methods are discussed below.
1. Use a TFTP client to put a binary file to the unit (*.ROM to upgrade the unit's internal
operational code and *.COB to upgrade its internal web interface).
Note: TFTP requires the .rom (binary) version of the unit's internal operational code.
2. In the TFTP server field, enter the IP address of the unit being upgraded.
4. Enter the full path of the firmware file in the Local file name field.
5. In the Remote file name field, enter the current internal operational code or WEB1 to WEB6
for the internal web interface.
6. Click the Upload Now button to transfer the file to the unit. The unit performs a power reset
after the firmware has been loaded and stored.
The following examples demonstrate the TFTP command sequence to download the .rom file and
the .cob file:
To recover firmware:
1. Start DeviceInstaller. If your PC has more than one network adapter, a message displays.
Select an adapter and click OK.
2. From the Tools menu, select Advanced/Recover Firmware. The Serial Port Firmware
Upgrade window displays.
3. For Port on PC, enter the COM port on the PC that is connected to the serial port of the
Lantronix unit.
Note: Make sure the Micro125 on which you are recovering firmware is connected to this
selected port on your PC.
5. For Firmware File, click the Browse button and go to the location where the firmware file
resides.
7. When prompted, reset the device. Status messages and a progress bar at the bottom of the
screen show the progress of the file transfer. When the file transfer completes, the message
“Successful, Click OK to Close” appears.
Note: For more information, see Recovering Firmware in the DeviceInstaller online Help.
There are two ways to enter Monitor Mode: locally using the serial port or remotely using the
network.
1. Follow the same steps used for setting the serial configuration parameters
(see Serial Port on page 37).
3. Type zzz (or xx1) to enter Monitor Mode with network connections.
4. Type yyy (or yy1) to enter Monitor Mode without network connections.
A 0> prompt indicates that you have successfully entered Monitor Mode.
5. Establish a Telnet session to the configuration port (9999). The following message appears:
MAC address 12D4AE4A20AA
Software version V6.11.0.0 (150522) M125
A 0> prompt indicates that you have successfully entered Monitor Mode.
Note: All commands must be in capital letters. Responses to some of the commands are in Intel
Hex format.
Note: Entering any of the commands listed above generates one of the following command
response codes:
Response Meaning
Note: Some unexplained errors might be caused by duplicate IP addresses on the network. Make
sure that your unit's IP address is unique.
When troubleshooting the following problems, make sure that the Micro125 is powered up.
Confirm that you are using a good network connection.
When you issue the ARP –S Your currently logged-in user Have someone from your IT
command in Windows, the does not have the correct rights department log you in with
"ARP entry addition failed: 5" to use this command on this sufficient rights.
message displays. PC.
When you attempt to assign an When you Telnet to port 1 on Telnet back to Port 1. Wait for it
IP address to the unit by the the device server, you are only to fail, then Telnet to port 9999
ARP method, the "Press Enter assigning a temporary IP again. Make sure you press
to go into Setup Mode" error address. When you Telnet into Enter quickly.
"(described below) message port 9999 and do not press
displays. Now when you Telnet Enter quickly, the device server
to the device server, the reboots, causing it to lose the IP
connection fails. address.
When you Telnet to port 9999, You did not press Enter quickly Telnet to port 9999 again, but
the "Press Enter to go into enough. You only have 5 press Enter as soon as you see
Setup Mode" message displays. seconds to press Enter before the "Press Enter to go into
However, nothing happens the connection is closed. Setup Mode" message.
when you press Enter, or your
connection is closed.
When you Telnet to port 1 to You may have entered the Confirm that the Ethernet
assign an IP address to the Ethernet address incorrectly address that you entered with
device server, the Telnet with the ARP command. the ARP command is correct.
window does not respond for a The Ethernet address may only
long time. include numbers 0-9 and letters
A-F. In Windows and usually in
Unix, the segments of the
Ethernet address are separated
by dashes. In some forms of
Unix, the Ethernet address is
segmented with colons.
The IP address you are trying to Confirm that your PC has an IP
assign is not on your logical address and that it is in the
subnet. same logical subnet that you
are trying to assign to the
device server.
The device server may not be Make sure that the Link LED is
plugged into the network lit. If the Link LED is not lit, then
properly. the device server is not properly
plugged into the network.
When you try to assign an IP The cause is most likely one of Double-check the parameters
with the DeviceInstaller the following: that you specified.
application, you get the Note: You cannot assign an IP
following : The hardware address you address to a device server
specified is incorrect. through a router.
"No response from device!
Verify the IP, Hardware The IP address you are trying to
Address and Network Class. assign is not a valid IP for your
Please try again." logical subnet.
The device server appears to If you are sure that the serial You can check to see whether
be set up correctly, but you are port setting is correct, then you there is a socket connection to
not communicating with your may not be connecting to the or from the device server by
device attached to the device correct socket of the device looking at the Status LED.
server across the network. server.
If the Status LED is blinking
Another possibility is that the consistently, then there is a
device server is not set up good socket connection.
correctly to make a good socket
connection to the network. If the Status LED is solid green,
then the socket connection
does not exist. Use the
Connect Mode option C0 for
making a connection to the
device server from the network.
Use Connect Mode option C1
or C5 for a connection to the
network from the device server.
See the full list of Connect
Mode options in Connect Mode
on page 44.
When connecting to the Web- Your computer is not able to Make sure that port 30718
Manager within the device connect to port 30718 (77FEh) (77FEh) is not blocked with any
server, the "No Connection With on the device server. router that you are using on the
The Device Server" message network. Also, make sure that
displays. port 77FEh is not disabled
within the Security settings of
the device server.
Conversion Table
Hexadecimal digits have values ranging from 0 to F, which are represented as 0-9, A (for 10), B
(for 11), etc. To convert a binary value (for example, 0100 1100) to a hexadecimal representation,
the upper and lower four bits are treated separately, resulting in a two-digit hexadecimal number
(in this case, 4C). Use the following table to convert values from binary to hexadecimal.
Scientific Calculator
Another simple way to convert binary to hexadecimals is to use a scientific calculator, such as the
one available on Windows operating systems. For example: