ivanmaltar - 2022-12-28


I have wo RevPi Connect+ controllers (PLCs) in redundant system. One PLC must be primary (always active) and the other must be secondary (active only when primary is down).

Have to ensure that the primary PLC is always active?

If one PLC goes down, the other one switches to 'standalone' state, if the PLC goes up again, both PLCs will be in 'standalone' state. How to ensure that automatically the primary PLC becomes active, and the secondary passive?