can senddiag n

Send a request to start diagnostic session (OBD2 only) every n seconds. Note that each session times out after 5 seconds, so n should be 4 or less:

Examples:

1. Send diagnostic session request every 4s :
   cmd can senddiag 4

See also: Vehicle Support, OBD2/J1939 Parameters Table

Firmware revision 2.0.5.5173