Siemens 6ES7322-1HF01-0AA0 Digital Output Module

Siemens 6ES7322-1HF01-0AA0 is an SM 322 digital output module for the SIMATIC S7-300 PLC family, delivering eight relay-type outputs that are optically isolated from the backplane. This 8-channel DO module uses a 1×20 backplane interface and is designed for mounting in an S7-300 rack. Each channel can switch up to 2 A, and loads can be wired for either 24 V DC or 230 V AC, enabling direct control of relays, contactors, solenoids, lamps, and other actuators. All outputs are isolated, and Siemens documents the device for inductive loads in compliance with IEC 60947-5-1 (DC13/AC15) when used with appropriate loads. The 6ES7322-1HF01-0AA0 variant is part of the SM 322 family and is commonly deployed in machine control and automation applications requiring multiple controlled relays in a compact backplane footprint.