can prot p

Enables/disables CAN and sets the protocol to be used as follows:

p = 0	CAN disabled (Default)
p = 1	ISO15765-4, sets baud rate to 500kbps, 11-bit header STM MICRO CAN
p = 2	J1939, sets baud rate to 250kbps, 29-bit header STM MICRO CAN
p = 3	Connect internal CAN to USB or Linux CAN LINUX CAN
p = 99	Auto-detect CAN protocol using USB CAN LINUX CAN

Notes:

make sure that a CAN cable is connected to the CTM200 when this command is in effect or the CTM200 will detect a CAN error.
can prot 99 may have a second parameter which displays the currently detected protocol. The second parameter is not configurable and is meant to show the protocol that was autodetected (useful for showconfig).
can prot 99 should be used by default, can prot 1 and can prot 2 use the STM MICRO CAN system and are NOT equivalent to can prot 99 1 or can prot 99 2

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 usbprot is for controlling the Linux based CAN processor, cmd can usbprot 0 needs to be set for STM Micro based CAN. can prot 1 and can prot 2 will IGNORE cmd can usbprot but it is good practice to set to 0 for STM MICRO CAN
If MANUALLY configuring Linux based CAN set cmd can prot 3 in addition to cmd can usbprot N
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:

Selects STM MICRO CAN ISO15765-4 :
cmd can prot 1

Firmware revision 2.0.5.3822