F.10 Sm 421; Di 32 X Uc 120 V, 6Es7 421-1El00-0Aa0 - Siemens SIMATIC S7-400H System Manual

F.10 SM 421; DI 32 x UC 120 V, 6ES7 421–1EL00–0AA0
The diagram below shows the connection of a redundant encoder to two SM 421;
DI 32 x UC 120 V. The encoder is connected to channel 0.
Figure F-10
S7-400H
System Manual, 09/2007, A5E00267695-03
Example of an interconnection with SM 421; DI 32 x UC 120 V
Connection examples for redundant I/Os
F.10 SM 421; DI 32 x UC 120 V, 6ES7 421–1EL00–0AA0
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