800xA Graphic Display update rate
I have a 3rd party OPC server interface to ABB 800xA system.I used Generic OPC Control network object to upload the data to system.I could able to see via control connection aspect the data from 3rd party OPC server is getting updated in every 3s. After updating in cotrol connection aspect it is again taking 3s to update in graphic display. How I can take out the delay to update in graphic. Now it is taking 6s to update one signal. I need a update rate of below 3s. How I can achieve this? Any idea?
As a thumb rule for every 800 OPC items, the PG2 graphics roughly takes 1sec to update.
Please check how many OPC items (graphic items) subscribed in the graphics from the diagnostics window.If it is more then you have to split the graphics to get the better update rate. Check the Timing summay tab to understand which part of call-up takes the longer time.
If Aspect View wrapper have been used,it will add the overhead tp the display call-up time. Also it is recommended to use late binding with care. If most of the data subscriptions use late binding, you can expect slow retrieval of data during display call-ups.