Connection examples for redundant I/Os
C.14 SM 421; DI 32 x UC 120 V, 6ES7 421–1EL00–0AA0
CPU 410 Process Automation/CPU 410 SMART
404 System Manual, 05/2017, A5E31622160-AC
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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