Siemens 6ES7 323-1BL00-0AA0 SIMATIC PLC Module

The Siemens 6ES7-323-1BL00-0AA0 SIMATIC S7-300 digital I/O module combines 16 digital inputs and 16 digital outputs on a single SM 323 card, designed for 24 V DC signaling with galvanic isolation between input and output circuits. It uses a 40-pole backplane connector (1x 40-pole) and is intended for use with SIMATIC S7-300 controllers to interface sensors, actuators, and other field devices in automation tasks. The module provides 24 V DC I/O, with an overall current rating of 4 A for the module and per-output capabilities up to 0.5 A per channel, enabling reliable control of switches, relays, and other binary devices. It is well-suited for applications in machine control, packaging lines, and general factory automation where compact, isolated digital I/O is required, and it can be deployed to expand S7-300 I/O in existing systems.