The dimensions are in mm and in brackets in inch.
31.5 Connection
1 I/O bus
2 Slot for processor module
3 Slots for communication modules
4 Interface for CAN
5 Power supply 24 VDC
6 Serial interface COM1
7 Ethernet network interfaces
8 Holes for wall mounting
31.5.1 CAN Interface
Interface Pin Signal Description
1 CAN_GND CAN reference potential
2 CAN_L Bus line, receive/transmit line,
LOW
Pin Assignment
Connection > CAN Interface
2019/11/15 3ADR024117M02xx, 11, en_US 237