Siemens SM322 digital output module (6ES7 322-1BH01-0AA0) for SIMATIC S7-300 backplanes, delivering 16 isolated 24 V DC outputs rated at 0.5 A per channel. Outputs are organized in two groups of eight, with a total current capacity of 4 A per group (8 A per module). The unit uses a 1×20-pole backplane connector and is designed to switch DC loads such as relay coils and other small 24 V devices in automation applications. This digital output board is intended for installation in an S7-300 I/O rack and wired to a 24 V DC supply.
