# Siemens S7-400 Redundant PLC with KepServerEX

**URL:** <https://forum.inductiveautomation.com/t/siemens-s7-400-redundant-plc-with-kepserverex/88521>\
**Category:** Ignition\
**Tags:** ignition81\
**Created:** [April 8, 2024, 2:55pm UTC](https://forum.inductiveautomation.com/t/siemens-s7-400-redundant-plc-with-kepserverex/88521 "2024-04-08T14:55:08Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Colin\_Taylor](https://avatars.discourse-cdn.com/v4/letter/c/7c8e57/32.png) [@Colin\_Taylor](https://forum.inductiveautomation.com/u/Colin_Taylor)\
**Post date:** [April 8, 2024, 2:55pm UTC](https://forum.inductiveautomation.com/t/siemens-s7-400-redundant-plc-with-kepserverex/88521/1 "2024-04-08T14:55:08Z")

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Currently working on a system that has redundant S7-400 plcs. I am currently trying to set up the redundancy in KepServerEX. I was wondering about when the PLC fails over if Ignition will be able to still see the tags. Right now the Ignition tags OPC item path is something like "nsu=KEPServerEX;s=Channel1.PLC1.tag. I was wondering if we set up the redundant channel in Kepware as Channel2.PLC2.tag if when the PLC fails over will Ignition still be able to see the tag?