TechWing

does 414-5H can via profinet-io connect et200m ，running at redundancy？redundancy is two cpu menage io and db 、m data ，not io redundancy connect。

 Hello TechWing;

You can connect redundant S7-400H CPUs with distributed I/O stations (ET 200M) over Profinet. See the following document:

https://support.industry.siemens.com/cs/fr/en/view/66644434

Redundancy with S7-400H systems is 2 CPUs linked with fiber-optic links for very fast transfer of data (and programs) between the master and stanby CPUs, to mange all relevant data, including redundant connection of I/Os. Please doiwnload and study the following manual for all the details:

https://support.industry.siemens.com/cs/fr/en/view/82478488

Hope this helps,

Daniel Chartier