Problem: We need to have the clocks on all of our PLCs synchronized with our server time. No problem with the ControlLogix, we just write the current time/date to a couple of tags and SSV from the logic, but there isn't any way to set the RTC on Micrologix from ladder. The documentation for the 1100 says you can send a message directly to the RTC to set it, but it seems to assume another 1100 is sending the message. When I try to configure a message from the ControlLogix, it doesn't have any selection for 500CPU Write as a message type. Any other message type errors out or doesn't allow RTC:0 as a destination. I know it can probably be done with a CIP generic message but you've got to know the specific service code, class, instance, and attribute to do so, and AB appears to have chosen to keep all that kind of stuff very arcane.
Any help would be greatly appreciated.
Any help would be greatly appreciated.
