ABB AC500 V3 Hardware Manual page 244

Device specifications
I/O modules > Digital I/O modules
1 I/O bus
2 8 yellow LEDs to display the signal states of the inputs I0 to I7
3 8 yellow LEDs to display the signal states of the outputs O0 to O7
4 Terminal number
5 Allocation of signal name
6 Terminal block for input signals (9-pin)
7 Terminal block for output signals (11-pin)
8 2 holes for wall-mounting with screws
9 DIN rail
Intended purpose
The device can be used as a decentralized I/O extension module for S500 communication
iInterface modules (e. g. CI592-CS31, CI501-PNIO, CI541-DP, CI581-CN) or as a centralized
extension module for AC500 CPUs.
The inputs and outputs are group-wise galvanically isolated from each other.
All other circuitry of the module is galvanically isolated from the inputs.
244 3ADR010278, 3, en_US 2022/01/31