Siemens 6ES7322-1HF01-0AA0 is an eight-channel digital output module (SM 322) for the SIMATIC S7-300 PLC system. It provides isolated relay outputs (8 DO) that can switch loads of 24 V DC or 230 V AC at up to 2 A per channel. The module mounts to the S7-300 backplane via a 1×20-pole connection, enabling reliable, individually controlled outputs for actuators such as relays, contactors, or indicator devices. The part number is listed for replacement and spare-part use within Siemens’ SIMATIC S7-300 ecosystem.
