Siemens 6ES7322-1BL00-0AA0 Digital Output Module

Siemens 6ES7322-1BL00-0AA0 SIMATIC S7-300 Digital Output SM 322 module provides 32 isolated DC outputs for direct control of loads in an S7-300 cabinet. Each channel is rated for 24 V DC at up to 0.5 A, enabling compact, distributed switching of devices such as relays, solenoids, and indicator lamps. The SM 322 uses a 1 × 40-pin backplane interface and is intended as an expansion card for the S7-300 family, with optical isolation between field circuits and the controller to improve noise immunity and safety. The module's 32 outputs are organized to support group-based current budgeting, with a maximum of 4 A per group and up to 16 A total per module across all groups. This device is designed to operate within the SIMATIC S7-300 ecosystem, making it suitable for scalable control architectures requiring numerous DC outputs in machine or line automation.