Hello Everyone,

I have a Primary and Redundant Controllers in my Main Control Panel. I also have a Primary and Redundant Remote I/O modules in two different racks for the respective controllers in my Local Control Panel. Do I need a Redundant Interface module for my primary and redundant remote I/O modules. Is it OK to use a single Interface Module in my Primary and Redundant Remote I/O modules to connect with the controllers in my Main Control Panel. If not please explain about the use of Redundant Interface module based on my architecture.

Also please give a clarity on how to use I/O addressing in the software for primary and redundant I/O modules. 

Thanks

Hello Guys 

Could anyone soon reply on the above query I have posted.

Thanks

Hello Raghu;

MopSO4 is quite right, your requirements at the level of interface modules conected to a redundant controller system will depend on the type of redundant controller and network topology used in your application.

The sceenshot below used these 2 documents to compare a redundant S7-400H system, with redundant ET 200M interfaces over Profibus, and a redundant S7-1500 R/H sytem using a Profinet ring to connect to ET 200SP remote I/O racks (non-redundant interfaces):

- Configuration of Redundant I/O Modules in SIMATIC PCS 7 (S7-400H)

https://support.industry.siemens.com/cs/es/en/view/28430682

- Connection of redundant I/O devices to S7-1500

https://support.industry.siemens.com/cs/us/en/view/109767576

If you feel we can offer more information, pray tell us more about your system.

Hope this helps,

Daniel Chartier