SIMATIC S7-200 CN, CPU 226 Compact device, AC power supply 24 DI DC/16 DO relay 16/24 KB progr./10 KB data, 2 PPI/user-programmable interface this S7-200 CN product
6EP1961-3BA21 SITOP PSE202U redundancy module input/output: 24 V DC/40 A suitable for decoupling two SITOP power supplies with maximal per 20 A output current.
The Critical Discrete Module (CDM) serves as an intermediary between discrete DC sensors and actuators, connecting them to a control module's IOBUS. It offers a total of 32 channels.
