Siemens 6ES7-322-1BH01-0AA0 Digital Output Module

The Siemens 6ES7-322-1BH01-0AA0 Digital Output Module expands a SIMATIC S7-300 system with 16 isolated 24 V DC outputs, each capable of switching up to 0.5 A, enabling direct control of common 24 V loads without external drivers. The module groups its channels into two eight‑output banks, with a maximum of 4 A per group and 8 A total per module, and it interfaces to the backplane via a single 20‑pole connector for reliable, compact I/O expansion. Designed for use in SIMATIC S7-300 installations, SM322 DO modules are suitable for driving solenoids, contactors, valves, indicators, and other 24 V DC actuators in automation projects that require moderate channel density. This model is described as SM 322 DO 16x24VDC/0.5A, reflecting its per‑channel rating, and is part of Siemens’ SM322 family of digital output modules, offering isolated outputs and a compact form factor that integrates with standard S7-300 I/O backplanes.