Siemens Simantic ET200SP - Forming Potential Groups with AC I;O Modules

Application planning
3.4 Forming potential groups
Distributed I/O system
System Manual, 12/2016, A5E03576849-AG
47
3.4.2
Forming potential groups with AC I/O modules
Introduction
The AC I/O modules of the ET 200SP are required to connect sensors/actuators with
alternating voltage 24 to 230 V AC.
Requirements
BaseUnits BU20-P12+A0+4B (BU type B1) and
● DI 4x120..230VAC ST digital input module
● DQ 4x24..230VAC/2A ST digital output module