ABB AC500 PLC Hardware Manual page 298

Device Specifications
I/O Modules > Digital I/O Modules
1 I/O bus
2 Allocation between terminal number and signal name
3 Sensor power supply 24 VDC / 0.5 A
4 16 yellow LEDs to display the signal states at the digital inputs/outputs (C0 - C15)
5 1 green LED to display the state of the process supply voltage UP
6 4 red LEDs to display errors
7 Label
8 Terminal unit
9 DIN rail
Sign for XC version
Intended Purpose
The device can be used as a decentralized I/O extension module for S500 Communication
Interface Modules (e. g. CI592-CS31, CI501-PNIO, CI541-DP, CI581-CN) or as a centralized
extension module for AC500 CPUs (PM5xx).
298 3ADR010121, 13, en_US 2019/04/17