SC200 SNMP Traps: Application Note AN0100 Issue C, June 2011
SC200 SNMP Traps: Application Note AN0100 Issue C, June 2011
SC200 SNMP Traps: Application Note AN0100 Issue C, June 2011
Summary
This application note provides detail on the SC200 alarm and trap operation.
It is intended to assist Network Management System (NMS) operators to configure their system to operate with
the SC200.
System Alarms
The SC200 V3.10 supports 58 different system alarms. These are pre-defined alarms related to internal systems
statuses, inputs and so on.
New alarms are added at each new software release, according to customer demand.
These are listed in the MIB:
low-Float(0), lvd2-Fail(20), ac-Frequency(40),
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marks of Eaton Corporation or its subsidiaries and affiliates. Other marks are the property of their respective owners.
© Eaton Corporation 2008-2011. All rights reserved.
AN0100: SC200 SNMP Traps
Issue C, June 2011
lvd1-Manual(18), ac-Phase3-Voltage(39),
lvd2-Disconnected(19),
Each alarm can be configured by the user to one of the standard severity settings (see later).
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AN0100: SC200 SNMP Traps
Issue C, June 2011
Alarm Severity
Any alarm can be configured to any of these severity settings:
Severity Definition Normal use
Disabled Alarm is disabled. No notifications, Turn off alarms that are not required.
log entry, or LED operation.
Warning A system event has occurred that is Notify and / or log a planned system process,
not an alarm. such as Battery Test in Progress
Minor A low priority alarm An alarm that does not require an urgent
response, such as Low Float
Major A high priority alarm An alarm that may require an urgent response,
such as Low Load
Critical A very high priority alarm An alarm that requires an immediate response.
The SC200 alarms are configured with default alarm settings, including severity. However, these may be easily
reconfigured. If required, a user can change settings to match the severity settings in their NMS.
System Object ID Used to form the return value for the SNMP MIB-2 This is the last part of the sys-OID. It can
sysObjectId. These numbers start with a specific be reconfigured to identify the power
enterprise ID (i.e. 1918 for Eaton) and are preceded by system type to a network manager.
1.3.6.1.4.1 to form an object ID for the system type.
Default 1918.2.13
Trap Format Select Eaton for multiple trap numbers, or X.733 for a Refer to “Trap Format” below.
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AN0100: SC200 SNMP Traps
Issue C, June 2011
Trap Repeat Rate How often to send a trap to trap receivers if Enable
Trap Repeat is Enabled or the trap receiver's Trap
Receiver Mode is Acknowledged-Summary-Trap.
Name Name used to identify this receiver. This is not used anywhere else
Level When to send a trap to this receiver. The level setting is alarm severity. E.g. If
this is set to “Critical Alarms Only”, then a
trap will be sent to this IP address only
when a critical alarm is activated.
Mode Set to Normal traps to send normal traps to a Network Leave at Normal Traps for use with an
Management System on alarm activation and NMS.
deactivation. Set to Acknowledged Summary Traps to
send summary traps to PowerManagerII. These traps
are repeated until PowerManagerII receives the trap,
connects to the Supervisory Module, and downloads
alarms and data.
Trap Format
Traps can be sent in two formats, depending on the Trap Format setting. We recommend x.733 format for new
applications, but Eaton format may be more appropriate for some network managers.
X.733 trap format
This conforms to ITU standard X.733. A single trap number (700) is used for all alarms.
The source and severity of the alarm are indicated by variables within the traps:
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AN0100: SC200 SNMP Traps
Issue C, June 2011
400 alarm-Inactive An alarm has become inactive. This trap is sent if any system alarm that has
been active (and is configured to have traps
sent) becomes inactive.
401 ai-High-Inactive An analog input high alarm has This trap is sent if any Analog Input High alarm
become inactive. that has been active (and is configured to have
traps sent) becomes inactive.
402 ai-Low-Inactive An analog input low alarm has This trap is sent if any Analog Input Low alarm
become inactive. that has been active (and is configured to have
traps sent) becomes inactive.
403 di-Inactive A digital input alarm has become This trap is sent if any Digital Input alarm that
inactive. has been active (and is configured to have traps
sent) becomes inactive.
500 alarm-Status-Change The status of one or more alarms This trap is used only with PowerManagerII. If it
has changed. receives this trap, it then polls the SC200 for its
alarm status.
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AN0100: SC200 SNMP Traps
Issue C, June 2011
Additional Information
To disable trap sending for specified alarms
Connect to the SC200 using web or DCTools.
Go to the alarm table.
For any alarm that is not to cause a trap to be sent, untick “Send Trap” as per the following diagram.
See the description for Trap Format above, including the alarm variables.
1. When a trap is received with severity not equal to inactive, the NMS should record the following
variables against this alarm:
trap-Alarm-Number
trap-Alarm-Origin
trap-Alarm-Name
trap-Alarm-Keep-Severity
The NMS should add this alarm to its active alarm list.
2. When any trap is received with severity equal to “cleared”, then these variables should be checked
against all active alarms:
trap-Alarm-Number
trap-Alarm-Origin
trap-Alarm-Name
The active alarm that matches has become inactive and should be removed from the active alarm list.
Notes:
1. Active alarms can also be checked by SNMP Get commands to each of the alarm tables.
2. For “Eaton” format traps, it will be necessary to match up the Alarm Inactive trap numbers with the
corresponding Alarm Active trap numbers. Then the first variable (alarm index) needs to be matched
up with the alarm index for the Alarm Active traps.
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