Sets which protocol to use for USB CAN (Linux processor based CAN):
| p = 0 | No protocol/raw CAN data, sets baud rate to 250kbps, 11-bit header (Default) |
| p = 1 | ISO15765-4, sets baud rate to 500kbps, 11-bit header |
| p = 2 | J1939, sets baud rate to 250kbps, 29-bit header |
| p = 3 | ISO15765-4, sets baud rate to 250kbps, 11-bit header |
| p = 4 | J1939, sets baud rate to 500kbps, 29-bit header |
| p = 5-9 | Reserved, unused |
| p = 10 | mems.ch gasQS (1 dev/CAN bus), sets baud rate to 1Mbps, 29-bit header |
Notes:
There are two CAN systems available on the CTM-200 a STM Micro based CAN processor and a Linux based CAN processor.
Where possible the Linux based CAN processor should be used.
cmd can prot modes 1 and 2 are for controlling the STM Micro based CAN processor, cmd can prot 3 needs to be set for Linux based CAN to be enabled.
If using STM based CAN disable usbprot by setting cmd can usbprot 0
cmd can prot 99 is for auto detection of CAN using the Linux CAN processor, setting of can usbprot is not required if using cmd can prot 99
Examples:
See also: Vehicle Support, OBD2/J1939 Parameters Table
Firmware revision 2.6.1.5516