Opcda service issue
We have 800 xa 4.1with advant master connectivity.
With system architecture of 2 AS and 2 CS and a domain, at present only AS 1 and CS 1 are running, now we have made AS 2 and kept in online it ran well for 10 days, now dynamics are updating very slowly, trends are not updating properly, I have stopped AS1 and restarted opcda service of CS from service structure now the system is fine, I have done comdinations and observed that when I am making AS 2 up, the system is behaving like above, any comments or suggestions pls.
Does AS2 contain any service or client application that put (over)load on the MB300 OPC Server?
A common mistake is to use OPC DA update rates above 9 seconds which is very very demanding for the MB300 OPC DA server and the Advant Master PLCs eg Basic History logs using OPC DA feed with Min Time set for 15 seconds. Stay on 1, 3 or 9 seconds update rate which have generic support in the PLCs.
The same restrictions apply to ALL clients reading data off the Advant Master PLCs.
Another (bad) example would be if a client or eg Property Transfers were to write a lot of properties in the PLCs.
Please search for and download the Advant Master Performance Guideline from ABB Library.
Look for system messages in the RTA Board Config tool and measure the RTA load (described in the guideline mentioned above). RTA load should be kept at 50% or below.