Siemens 6ES7 322-1BL00-0AA0 Digital Output Module

The Siemens SIMATIC S7-300 SM322 digital output module 6ES7-322-1BL00-0AA0 provides 32 isolated 24 V DC outputs (0.5 A per output) for direct coil/actuator control in a PLC rack. Designed for use with the S7-300 system, this 32‑channel DO module plugs into the backplane via a 40‑pole connection and delivers a total module current up to 16 A, with up to 4 A available per group, depending on configuration. The SM322 offers galvanic isolation between the backplane and field wiring to protect the CPU and wiring harness, and it is intended for discrete digital outputs such as relays, contactors, lamps, and other 24 V DC actuators in automation and machine control applications. Its 32 outputs enable wide‑scale control in automated lines, processes, and packaging or material‑handling equipment, providing a compact solution when many individual actuators must be driven from a single PLC rack.