Sm 321; Di 8 X Ac 120/230 V, 6Es7 321-1Ff01-0Aa0; F.4 Sm 321; Di 8 X Ac 120/230 V, 6Es7 321–1Ff01–0Aa0 - Siemens SIMATIC S7-400H System Manual

F.4 SM 321; DI 8 x AC 120/230 V, 6ES7 321–1FF01–0AA0
The diagram below shows the connection of two redundant encoders to two SM 321;
DI 8 AC 120/230 V. The encoders are connected to channel 0.
Figure F-4
S7-400H
System Manual, 09/2007, A5E00267695-03
F.4 SM 321; DI 8 x AC 120/230 V, 6ES7 321–1FF01–0AA0
Example of an interconnection with SM 321; DI 8 x AC 120/230 V
Connection examples for redundant I/Os
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