Connection Examples For Redundant I/O - Siemens SIMATIC S7-400H Manual

Connection Examples for Redundant I/O

This appendix contains examples for connecting redundant I/O. To simplify the
illustrations, only the first channel of the two redundant modules is shown in the
diagrams.
More connection examples are available in the SIMATIC FAQs at
http://www.siemens.com/automation/service&support under the
keyword "Redundant I/O".
In Section
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Automation System S7-400H Fault-tolerant Systems
A5E00068197-07
SM 321; DI 8 x AC 120/230 V, 6ES7 321-1FF01-0AA0
SM 322; DO 8 x AC 230 V/2 A, 6ES7 322-1FF01-0AA0
SM 321; DI 16 x AC 120/230V, 6ES7 321-1FF00-0AA0
SM 331; AI 8 x 16 Bit; 6ES7331-7NF00-0AB0
SM 332; AO 4 x 12 Bit; 6ES7 332-5HD01-0AB0
SM 421; DI 32 x UC 120 V, 6ES7 421-1EL00-0AA0
SM 422; DO 16 x AC 120/230 V/2 A, 6ES7 422-1FH00-0AA0
SM 321; DI 16 DC 24V, 6ES7321-7BH00-0AB0
SM 322; DO 32 DC 24 V/0,5 A, 6ES7 322-1BL00-0AA0
SM 331; AI 8 12 Bit, 6ES7 331-7KF02-0AB0
Description
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