Siemens 6ES7223-1PL32-0XB0 SIMATIC S7-1200 Digital I/O SM 1223

The Siemens SIMATIC S7-1200 SM 1223, DI 16×24 V DC, DQ 16x relay provides 16 digital inputs and 16 digital relay outputs for monitoring and controlling a broad range of industrial field devices. The digital inputs are rated for 24 V DC and support sink/source wiring, with a signal “0” recognized at up to 5 V DC and a signal “1” from 15 V DC. The standard input delay is parameterizable across 0.2, 0.4, 0.8, 1.6, 3.2, 6.4, and 12.8 ms, with selectable values in groups of four. The 16 inputs are organized into four groups of four, and interrupt inputs can be parameterized for applications requiring faster event response.

The 16 relay outputs provide flexible switching for AC and DC loads, supporting 5–30 V DC and 5–250 V AC with a rated switching current of 2 A. The relay contacts support resistive and inductive loads, as well as lamp loads up to 30 W DC or 200 W AC. Outputs are arranged in four groups of four, while the relay design provides electrical separation between output circuits and 1,500 V AC isolation from the backplane bus. Diagnostic alarms and LED indication for both input and output status support straightforward system monitoring, while shielded cables up to 500 m can be used for field connections. Its higher channel density makes it particularly suitable for larger machines, production lines, process equipment, and control panels requiring both substantial digital input capacity and relay output switching.