Siemens 6ES7323-1BH01-0AA0 Programmable Logic Controller Module

Siemens 6ES7323-1BH01-0AA0 is a SIMATIC S7-300 digital input/output module (SM 323) that provides eight digital inputs and eight digital outputs for 24 V DC automation tasks. It features galvanic isolation between field circuits and the backplane, helping protect the controller from ground differences and transients. The module connects to the S7-300 backplane via a single 20-pole interface and draws power from the backplane’s 5 V DC supply, with a maximum current allocation of about 40 mA for the module’s electronics. This SM 323 unit is suited for compact control panels where sensors feed digital inputs and actuators are driven by digital outputs, all within a fixed 24 V DC logic domain. It belongs to Siemens’ SIMATIC S7-300 digital I/O family (SM 323/SM 327) and is designed for use in SIMATIC S7-300 systems that require reliable, isolated digital I/O. The product lifecycle notes indicate an obsolescence trajectory (PM400), so buyers should verify current availability and compatibility with newer hardware before procurement.