DDEC VI ELECTRONIC CONTROLS APPLICATION AND INSTALLATION
4.2
SWITCH INPUTS RECEIVED OVER J1939 DATA LINK
Multiplexing is available for several switch inputs over the SAE J1939 Data Link. The CPC
supports this feature for the following switch inputs:
□
Cruise Control On/Off Switch
□
Cruise Control Set/Coast
□
Cruise Control Resume/Accel
□
Cruise Pause Switch
□
Service Brake Switch
□
Park Brake Switch
□
Clutch Brake Switch
□
Engine Brake Switches – EBC1 Message
□
Dual-Speed Axle Switch
To use the multiplexing feature with the CPC, the parameters must be set up correctly. There
are three different source addresses (SA) possible for receiving the Cruise Control message.
Every switch in this message must be programmed to react on one programmed SA. The SA is
programmed by the vehicle OEM.
If an error is detected (wrong data on J1939 CC message or the message is not sent) an error is
logged. If the error is caused by wrong data or missing data, the error will be logged and will be
held active until the ignition is switched off. Cruise Control will also be disabled.
The options for each source address are listed in Table 4-24. The multiplexing parameters are
listed in Table 4-25.
Parameter Group
Parameter
Options
Default
Access
1
EBC1 Source Address J1939
0-255
33
VEPS, DRS
1
CC1 Source Address SAE J1939
0 – 255
23
VEPS, DRS
1
CC2 Source Address SAE J1939
0 – 255
33
VEPS, DRS
1
CC3 Source Address SAE J1939
0 – 255
49
VEPS, DRS
1
TSC1 Source Address SAE J1939
0 – 255
231
VEPS, DRS
Table 4-24
Source Address Options
All information subject to change without notice.
(Rev. 01/07)
4-27
7SA827 0701
Copyright © 2007 DETROIT DIESEL CORPORATION
