Siemens SIMATIC Manual page 223

Wiring and block diagram of SM 323; DI 16/DO 16 x DC 24 V/0.5 A
①
②
③
Terminal assignment
The diagram below shows the IO addressing of channels.
S7-300 Module data
Manual, 06/2017, A5E00105505-AJ
3.37 Digital IO module SM 323; DI 16/DO 16 x DC 24 V/0.5 A; (6ES7323-1BL00-0AA0)
Channel number
Status displays - green
Backplane bus interface
Digital modules
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