# Opcode: PCON
# Priority: Normal
# Services: DCC_CAB or DCC_CMD
# Parameters: Session (1 bytes), Consist# (1 bytes)
# Conditions: 
# Direction: Cab to command station
# States / Modes: 
# Result: If the module does not already have a consist with the specified id then the consist is created. The session is added to the specified consist.