Today is...
Tuesday, November 21, 2017
Welcome to, the global online
community of automation professionals.
Featured Video...
Featured Video
A demonstration of EtherCAT control of linear motors using the CTC EtherCAT master.
Our Advertisers
Help keep our servers running...
Patronize our advertisers!
Visit our Post Archive
Redundant AB PLC5 - Switchover by Logic
Forcing switchover of AB redundant PLC5 by logic.

Goodmorning everyone,

I'm working on a control system with redundant PLC 5 through the 1785-BCM modules.

The system is interfaced via 3100-MCM modules with an Intouch HMI.

I cannot find a way to command from HMI, and then from logic in the PLC, a switchover between controllers.

Do you have any suggestions?

Thanks in advance.