© 2009 Cypress Solutions
Complete Manual: CTM-15X Firmware 1.2.0
(Revision 1.0)
72
6BCommand Reference
obdsp n
Sets the protocol used by the OBDII transmitter.
n = 0
Automatic
n = 1
SAE J1850 PWM
n = 2
SAE J1850 VPW
n = 3
ISO 9141-2
n = 4
ISO 14230-
4 KWP (slow)
n = 5
ISO 14230-
4 KWP (fast)
n = 6
ISO 15765
-
4 CAN (11 bit ID, 500 Kbaud)
n = 7
ISO 15765
-
4 CAN (29 bit ID, 500 Kbaud)
n = 8
ISO 15765
-
4 CAN (11 bit ID, 250 Kbaud)
n = 9
ISO 15765
-
4 CAN (29 bit ID, 250 Kbaud)
n = 10
SAE J1939 CAN (29 bit ID, 250 Kbaud)
n = 11
USER1 CAN (11 bit ID, 125 Kbaud)
n = 12
USER2 CAN (11 bit ID, 50 Kbaud)
The current OBDII transmitter protocol can be queried by using the
obdsp
command without parameters.
Note that option 0 (Automatic) only replaces OBD2 protocol options 1
-9. Some vehicles may exhibit
problems with automatic protocol discovery.
obdsp
must specifically be set to match the protocol on
those vehicles.
Examples:
1. Set the OBDII transmitter to use the J1939 protocol
cmd obdsp 10
OK
2. Query the current OBDII transmitter protocol
cmd obdsp
cmd obdsp 7
OK
A cmd save is required for this command to take effect.
return to list of commands