Hi All,
I have a need to create a timer in DeltaV that resets every hour. The timer is to be used as a watchdog for another DCS system (ABB System 6). How do I set up a timer/counter that resets every hour? Is there a way to use the number of seconds per hour as the output?
Background:
We are installing some new density meters onto one of our plant units. This unit is controlled by a DeltaV DCS. The density readings will be used in another plant area which is controlled by an ABB DCS system (System 6). Rather than hardwire the density meters to the ABB DCS, "senior management" have decided that we will hardwire the signals in to DeltaV, and then using our site data historian (OSIsoft PI) pass them to our ABB system. To ensure that the comms is ok between the 2 systems, we want to create a timer in DeltaV which we then read into PI and pass to ABB, where it will be read in a rate-of-change calculation and alarms generated. I'm dead against this method, I wanted hardwired connections from the density meters, but the job is being done on the cheap ("you engineers just don't understand the need to keep costs down...").
All help greatly appreciated
Thanks
Col