Siemens 6ES7 326-1BK00-0AB0 PLC Control Module

Siemens 6ES7 326-1BK00-0AB0 is a SIMATIC SM 326 digital input module for backplane mounting that provides 24 DC 24 V digital inputs. It reads external devices such as sensors and pushbuttons and feeds their on/off states into the PLC for real‑time control in SIMATIC automation systems. As part of the SM 326 family, the 6ES7 326-1BK00-0AB0 corresponds to 24 digital input channels (DI 24xDC24V); a safety‑oriented variant is also available as SM 326 F with DI 24xDC24V. This module is typically deployed in industrial applications to monitor field signals on production lines, packaging equipment, and other automated processes, feeding deterministic input states to the PLC for logic, interlock, and sequencing tasks. It is designed for use with backplane‑based SIMATIC controllers in PCS 7 process control environments and broader S7 automation architectures. The part number 6ES7 326-1BK00-0AB0 identifies a standard 24‑channel digital input module operating at DC 24 V, enabling scalable expansion of digital I/O in automation projects.