We are undertaking an HVAC upgrade from PLC to DDC on a large onshore gas processing plant using a Carrier CCN system. A requirement is to check the health status of each processor and module so that in the event of a failure the DDC control system will be able to switch to standby systems on a different processor (similar to redundancy). I need to be able to program the ccn to be able to check health status of each processor and I/O module to be able to carry out the required function.
Does anyone have any experience with this on this particular system?
I know other true control system manufacturers have this as standard on their systems but Carrier don't seem to be that far advanced!