Siemens SM322 6ES7 322-1BL00-0AA0 is a 32-channel digital output module for the SIMATIC S7-300 system, delivering 24 V DC outputs at 0.5 A per channel. The outputs are galvanically isolated from the backplane and are arranged in eight groups of four channels to simplify wiring and current budgeting. It interfaces to the standard SIMATIC S7-300 backplane with a 40-pole connector, and the module supports a total current rating of up to 16 A across all outputs. Typical tasks include switching relays, contactors, solenoids, and other 24 V DC actuators in factory automation and machine control.
