Sm 421; Di 32 X Uc 120 V, 6Es7 421-1El00-0Aa0 - Siemens SIMATIC PCS 7 CPU 410-5H System Manual

Connection examples for redundant I/Os
C.14 SM 421; DI 32 x UC 120 V, 6ES7 421–1EL00–0AA0
C.14 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 C-12 Example of an interconnection with SM 421; DI 32 x UC 120 V
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CPU 410-5H Process Automation
System Manual, 09/2014, A5E31622160-AB