Write Real-time Tags with Blocking Call

  • SyncWriteTags method is a simple call you can use to write to any number of Tags with a blocking call.
  • The async method WriteTags is more efficient for writing Tag values on a continuous basis.
  • This SyncWriteTags method does not make a synchronous call to the OPC Servers, it makes a synchronous call to the OAS Services and returns an error status of 1 if the service is not reachable for a tag.
  • No features in Open Automation Software make synchronous calls to OPC Servers, as it often causes high CPU usage and poor performance.