Kinglong Can Bus: Dominant Bit When Recessive Bit When
Kinglong Can Bus: Dominant Bit When Recessive Bit When
Kinglong Can Bus: Dominant Bit When Recessive Bit When
1。CAN 概念
一.定义
CAN,全称为"Controller Area Network",即控制器局域网,是国际上应用最广泛的现场总线之
一。CAN总线是为解决现代汽车中众多电控模块(ECU)之间的数据交换而开发的一种串行数据总线。
CAN,full name "Controller Area Network",which is one of the extensively applied field bus(现场总线??)
internationally. CAN bus is a kind of serial data bus, which is developed for the data exchange of many
electric control units (ECU) in modern automobile.
二.CAN 网络组成
CAN 是由传输媒体与一系列电控模块(ECU)组成。
CAN is constituted by transmission medium and many electric control units (ECU).
传输媒体--双绞线, 这两条信号线被称为CAN_H 和CAN_L
Transmission medium -- twisted pair. These two signal lines are called as CAN_H and CAN_L
信号电平和位表示--静态时是2.5V 用CAN_H(3.5V)比CAN_L(1.5V)高表示的逻辑0被称为
显性位,而用CAN_L(3.5V)比CAN_H(1.5V)高表示的逻辑1叫做隐性位.
Signal level and bit-static state voltage is 2.5 Volt, the logic 0 is called dominant bit when
CAN_H (3.5V)is higher than CAN_L(1.5V),the logic 1 is called recessive bit when CAN_L(3.5V)
is higher than CAN_H(1.5V).
电控模块(ECU)就是特定的数据采集、显示、控制单元,如发动机电控模块(ECM),自动变速
箱电控模块(TCM),灯控模块。
Electric control units (ECU) are the units that collect, display and control specific data, e.g.: engine
control module (ECM), transmission control module (TCM), lamp control module.
2. CAN信号分类
CAN signal CLASSIFICATION
一. 输入信号 INPUT SIGNAL
① 开关量:只有通/断两种状态,如小灯开关、油压报警、ABS故障等
SWITCH SIGNAL: ONLY "ON/OFF" state, e.g. small lamp switch, oil pressure alarm,
ANBS malfunction.
② 模拟量:用数值表示的量,如水温、油量、车速等
Simulation quantity: shown by quantity. E.g.: water temperature, oil quantity, speed
二. 输出信号 output signal
执行特定功能的信号,如点火、側位灯、车身提升等
the signals that performs specific function. E.g.: ignition、side lamp、raise body
金龙客车至今应用了 3 代总线技术,第一代应用最为广泛。第一代即现在广泛使用的一级
总线技术,金龙命名为总线仪表,即仪表、处理器、总线管理器应用总线技术,其他电路采用传
统接线。第二代应用量非常少,不作介绍。即将或者说已经较大批量应用的是第三代总线技术,
即全车总线,没有出口,暂时不作介绍。
King Long bus has applied three generation's bus technology. First generation is most extensively
applied, which is first grade bus technology. King Long name it as "bus instrument", that is, bus
technology is applied in instrument, CPU and bus manager. At the same time, traditional connection is
applied in other circuits. Second generation is seldom used, so we do not introduce it now. Third
generation is whole bus technology, which is ready to be or has been extensively used, but has not been
exported, so we do not introduce it now.
总线仪表由仪表 ZB271,总线处理器 CLQ271 和总线管理器 CGM271 组成.
CAN instrument system include 3 parts: CAN instrument ZB271, CAN processor CLQ271 and CAN
recorder CGM271.
CAN processor
Model:CLQ271
Air pressure II
Coolant temp. Air pressure I
Recharge voltage
S1 S2 S3
S4
ZB271
CLUSTER INSTRUMENT
ZB271 组合仪表如图所示,主要包括 8 块指针式表、29个由发光二极管(LED)点亮的图标、1 块
液晶显示屏和 4 个按键。
ZB271 cluster instrument includes 8 finger gauges, 29 icons which 20 LEDs lighten, 1
liquid-crystal displayer and 4 key-presses.
a.指针式仪表 finger gauges
车速表、转速表、水温表、油压表、气压表Ⅰ、气压表Ⅱ、电压表、燃油表。
Vehicle speed, engine speed, coolant temperature, oil pressure, air pressure I, air
pressure II, recharge voltage, fuel level.
b.图标 icons
指示报警(如水温报警,油压报警等)、操作(如左转向,右转向等)及状态(ABS 工作指示,缓
速器工作指示)。
Indicate warning signal (e.g. coolant temp. warning, oil pressure warning) , Operate
(e.g. left turn, right turn) and state(ABS working indicate, retarder working indicate)
2)、指示灯 indicator
上排: upper row
(1) 远光(+) (2)左转向 (+) (3)右转向(+) (4)倒车(+) (5)气压I(-)
(6)气压Ⅱ(-) (7)油压 (8)驻车(+) (9)STOP
High beam(+) (2)left turn (+) (3)right turn (+) (4)back-up(+)
(5)pressureⅠ(-) (6)air pressureⅡ(-) (7)oil pressure (8)parking(+) (9)STOP
下排:
Lower row
(10)P (11)R (12)N (13)D (14)S
中间方阵: Middle phalanx:
(15)coolant level (16)water temp. (17)fr.fog (18)rear fog (19)lower
beam (20)stop brake (21)lamps main switch (22)preheating (23)width
lamp 示 廓 灯 (24)recharge indicator (25)ABS 26)retarder
3)液晶显示内容 LED display datum
(1)5 个门指示 (2)油量报警 (3)机油滤 (4)燃油滤 (5)空气滤 (6)制动灯故障 2
个 (7) 仓温报警 (8)刹车片磨损 4 个 (9)转向灯 4 个 (10)集中润滑 (11)气囊报警
4 个 (12)测滑 (ASR) (13)发动机启动等待 (14)发动机停止 (15)发动机维护
(16)发动机诊断 (17) 干燥器 (18)巡航 (19)卫生间水位 (20)危险信号 (21)
长里程/短里程/时钟/油量/发动机累计时间/发动机累计转数
(1) 5 doors indicator (2) fuel level alarm (3)oil filter (4)fuel filter (5)air filter
(6)2 brake lamp malfunctions (7)engine cabin temp. alarm (8)4 worn brake disc
warning lamp(9) 4 turning lamps (10)central lubrication (11)4 air bag
alarm (12)ASR (13)start waiting (14)engine stop (15)engine maintenance
(16)engine diagnose (17)dryer (18)cruise (19)toilet water level
(20)emergency signal (21)long mileage/short mileage/time /fuel
level/engine accumulative total running time, total running revolution.
4.按键
S1: 设置键
S2、S3: 功能键
S4: 仪表背光调整
按键操作如下:
⑴按"S1"键进入修改时钟状态,从年开始依次修改,正在修改的位以闪烁提示。
注 :当液晶屏上有报警时不可以修改时间。
⑵按"S2 或 S3"键有以下几点功能:
没有报警时的显示状态转换如图 5 如示:
图-5 液晶屏显示转换
注:
a 屏显示内容为:Total:000000 Km 累计里程
TripA:000.0 Km 短里程 A
TripB:000.0 Km 短里程 B
b 屏显示内容为: 发动机图标
Tt:000000 Hr 发动机累计时间,单位为小时
c 屏显示内容为: 燃油量图标
* 0000 剩余油量所能行驶的公里数
Km
百公里油耗
* 00.0
L/100
( * 此功能暂缺 )
车外温度(-20 ~ +40℃)
仓温(40 ~ 120℃)
e 屏显示模块温度
f 屏显示模块温度
g 屏显示模块工况,实圈表明正常运行空圈,表明未安装或故障状态
f-g 屏为报警显示
下 S3 键可清里程 B。显示状态如下:
图-7 清短里
程
④ 当有多个报警显示时选择 S2 键可向左移动屏上箭头,选择 S3 键可
向右移动屏上箭头。显示状态如下:
图-8 查看液晶屏上的报警、操作及状态图标
⑶选择旋钮"S4"可调整仪表背光的亮度。
ASR dryer
Door 1 * retarder
档位 N *
注:*号标注的图标在信号条上显示
Note: icon which is marked "*" displays on the signal displayer.
无 *号标注的图标在液晶屏上显示
icon which is not marked "*" displays on thedigital display screen..
Remark/wiring
No. designation wiring Number
Number/dimension/color
1 +24V 1e 1e-0.75R
2 earth 31 31-0.75B
3 WAKE_UP1 W1 W1-0.5W
4 CANH1 CH1 CH1-0.5L
5 CANH2 CH2 CH2-0.5L
6 CANL1 CL1 CL1-0.5G
7 CANL2 CL2 CL2-0.5G
8 Blank
9 Blank
10 Blank
11 WAKE_UP2 W2 W2-0.5W
12 Blank
13 Blank
14 Blank
15 Blank
16 Blank
17 Blank
18 Blank
19 Blank
20 Blank
21 Blank
VD-CGM271 CAN RECORDER
一. 外型图 OVERVIEW
Main function :
——transform instrument signal
——control autodoor and retarder
——control speed lamp
——control air suspension
MODEL: VD-CLQ271-100
function:collect speed pulse, count speed;collect engine RPM pulse,count
RPM(revolutions per minute) ; modulate speeed signal , prodoce 3 frequency
conversion units pulse output for control speed meter,air susspention,retarder.
modulate RPM pulse output for controlling RPM meter;connect water tempreture/oil
pressure/air pressureI/air pressure II alarm value;connect battery voltage、
oil pressure、water temp.、oil pressure、air pressureⅠand air pressure Ⅱ
simulation value; output battery voltage、oil pressure、water temp.、oil
pressure、air pressureⅠand air pressure Ⅱ by digital value,output state values
(turn L/R,reverse etc.)and alarm values;
Output autodoor/retarder control signal. Autodoor Switch is off and retarder switch is
on when speed value is over seeting value;control speed lamps,lamps flash 3 times when
start,lamps is off when stop;1lamp is on when speed is less than 30km/h, 2lamp are on
when speed is 30----60km/h , 3lamps are on when speed is over 60km/h。
二. 接口定义 TERMINAL
DESIGNNATION
r)
cord e
Re
D i ng
录仪 ( ivr
行车 记
c ):
Pr u
名称 ( do t
): J
LY 2 JP2
Model ):
型号 ( eter s 07
Param ):
( No.
参数 ir l 80
号( Sai E )
编 70
生产 88转( t.x
0888 710 8
:871 0 00,81
Fax. ) :871 080
传真 ( Te )
电话 ( .l
Notes:
Terminal
definition Wire No. Wire color remark
No.
JP2-1 +24V 1e R
JP2-2 WAKE_UP W2 W
JP2-3 CANH CH2 L
JP2-4 CANL CL2 G
JP2-5 TXD2 TX2 G
JP2-6 RXD2 RX2 Y
JP2-7 blank
JP2-8 ground 31 B
JP2-9 24V 1e R
JP2-10 blank
JP2-11 blank
JP2-12 CANL
JP2-13 blank
JP2-14 blank
JP2-15 blank
JP2-16 ground 31 B
三.功能 function
1. 管理 CAN 总线 manage CAN
2. 记录行车数据 record travelling datum
四. 主要操作 operate
1. 数据下载 download datum
下载 VITI 行车数据或国标行车数据。
2. 查看行车数据 examine travelling datum
查看 VITI 行车数据或国标行车数据。
3. 设置参数 set parameter
设置行车记录仪参数或总线模块参数。
Set recorder parameter or CAN module parameter
CAN processor CLQ271
处理 器
中央
t) :
oduc 270
(Pr CLQ
名称 ):
rs) :
del
( o
型号 te ):
M(P ra e N o.
am al
参数 (Si ri 007
.) 8
编号 Ext
生产 转(
88
00888 1018
:87 1 ,8 7
x.) 8000
(Fa 0
传真 ): 871
(Tel.
电话
1.2.2.3 VD-CLQ271 CAN processor
处理 器
中央
t) :
o c 270
(P r CL
名称 ud ):
Q
rs) :
del
( o
型号 te ):
M ram e
(P a o.
参数 al N
(S i ri 00 7
.) 8
编号 Ext
生产 转(
88
0 88 101 8
:87 1 80 ,8 7
x.) 800 0
(F a 0
传真 ): 871
(T e l.
电话
VD-CLQ271 processor
Notes:
Abbreviation
I-Input O-output N(or -)-Negative P(or +)-positive
Negative(-)/
Terminal
definition Wire No. Wire color Input/output positive(+) remark
No.
control
J1-1 Front fog lamps 30 Y Switch input +
J1-2 Left cabin door 20 R Switch input +
J1-3 Parking brake 10 WR Switch input -
J1-4 Rear fog lamps 30d YL Switch input +
J1-5 Shift-P blank blank Switch input +
J1-6 Toilet water level 117 Switch input +
J1-7 Main switch, lamp 16 GW Switch input +
J1-8 Air pressureⅠalarm 8 Br Switch input -
J1-9 Exhaust brake 105 WB Switch input -
J1-10 Oil temperature Switch input -
J1-11 Drier Switch input -
J1-12 Direction indicator Switch input
lamp malfunction
J3-11 CANL
2.1 Check voltage supply (+24V) and ground (-),J1-1 and J3-2 are
24V also.
and J1-2.
Check method :
test CAN processor J3-3 can not have output , at the same time
2.3. Keep the CAN communication wires(wire No.: CH,CL) work well
Check method :