Siemens 6ES7 322-1BF01-0AA0 Output Module

Siemens 6ES7 322-1BF01-0AA0 is the SM322 digital output module for SIMATIC S7-300 systems, delivering eight isolated 24 V DC outputs rated at 2 A per channel. The module is arranged in four groups and features optical isolation between the field side and the backplane, enabling safe, reliable switching of loads such as relays, contactors, and solenoids in industrial panels. It plugs into an S7-300 rack and communicates with the central controller via the standard backplane I/O bus, making it a compact, widely used solution for distributing 24 V DC control signals across a machine or process line. Common applications include automation panels, conveyors, packaging lines, and other machinery where eight discrete 24 V control outputs are required without sacrificing isolation or performance. The part number 6ES7 322-1BF01-0AA0 corresponds specifically to the DO 8x24VDC/2A configuration within the SM322 family, and you’ll typically find it listed by Siemens and authorized distributors as an 8-channel digital output module for legacy S7-300 installations.