Connecting The Can Bus - Siemens Simatic Operating Instructions Manual

7.6

Connecting the CAN bus

CAN connection
CAN connection pin
assignment
NOTICE
The connection CAN Ground to ground is necessary to ensure EMC stability.
The common return (CAN_GND) may only be connected in one place to the ground
potential in the CAN network.
NOTICE
EMC stability is only guaranteed with shielded CAN cables.
SIMATIC PN/CAN LINK
Operating Instructions, 03/2018, A5E39895388-AB
The PN/CAN LINK is connected to the CAN bus by
means of a CAN cable with D-sub connector (9-pin,
socket)
CiA specifications with shielded connector for the
connection.
1 --
2 CAN_L
3 CAN_GND
4 --
5 CAN_SHLD
6 CAN_GND
7 CAN_H
8 --
9 --
7.6 Connecting the CAN bus
①
. Use a shielded CAN cable conforming to
Terminating resistor 120 Ω
(install jumper from pin 1 to pin 2 for use)
CAN_L bus cable (dominant low)
CAN Ground
Not connected
CAN shield
CAN Ground
CAN_H bus cable (dominant high)
Not connected
Not connected
Connecting
71