I'm communicating with an ABB AC800M PLC using the OPC-DA Driver in VTScada. When reading tags, I can increase the "scan rate" in the tag itself, and as long as the OPC server is properly configured, I can get updated values as frequently as I need them.
Pushbuttons on the other hand are "written" to the OPC Server, and there is a 1 second delay at least from pushbutton press to the time the output is set. Under the driver properties, under the OPC tab I have "use tag scan interval" selected. However, I have tried unchecking this, and using asynchronous updates and neither makes a difference.
Is there a way I can change the update rate to bits/values written to the OPC Server by VTScada?