I was wondering if I use transaction groups to send about 2500 OPC tags to a local DB as well as a remote DB and they are triggered at the same time, will the MODBUS device be polled two consecutive times, once for either set of transaction groups? Or will it use the last good data since they will be triggering at approximately the same time?
The drivers don’t double poll tags with the same address; when a tag is subscribed more than once the driver will aggregate and use the lowest rate of the group.
Perfect, hadn’t seen the OPC Data mode in the Scan Class Editor yet. Got it now.