ABB AC500 PLC Hardware Manual page 1288

System Assembly, Construction and Connection
AC500 (Standard) > Connection and Wiring
Fig. 239: CAN Bus, connection and wiring
For more Information on CANopen/DeviceNet field bus see .
2.6.4.10 Ethernet Connection Details
2.6.4.10.1 Ethernet Interface
Pin assignment
Interface
1288
Branches are not allowed in a CAN network. Stubs should be avoided or kept
as short as possible (< 0.3 m).
When connecting the cable take care to use one dedicated twisted pair for the
CAN signals (CAN_L and CAN_H) and another free wire for CAN_GND.
CAN_GND must be connected as reference, to avoid common mode problems
causing telegram errors.
Keep the CAN bus wiring away from electrical disturbance and close to earth
potential to minimize interference.
Ethernet is also used for PROFINET, EtherCAT and Modbus TCP connection.
Pin
1
2
3ADR010121, 13, en_US
Signal
TxD+
TxD-
Description
Transmit Data +
Transmit Data -
2019/04/17