I have 10 PCs running windows xp with 7.8.2 (32-bit) installed. I’ve created an OPC-DA server on each machine referencing the Opto22OPCServer and associated tag database file, along with a tunneler device, both connected. I have created 10 individual OPC-UA servers on the primary gateway (also 7.8.2 on Windows Server 2008 R2 Standard, 64-bit), corresponding to each machine. All devices populate in Quick Client, as well as the OPC browser in designer. The tags are located in 3 distinct folders, 2 of which will successfully open and import to the tag browser. The third (and largest) file consistently times out with the following:
Error browsing OPC.
GatewayException: Results for asynchronous rpc call were not received within the specified amount of time [120000 ms] for task ‘1c3ed43a-cc88-42e2-9da0-214fcb6a48ab’
caused by TimeoutException: Results for asynchronous rpc call were not received within the specified amount of time [120000 ms] for task ‘1c3ed43a-cc88-42e2-9da0-214fcb6a48ab’
Ignition v7.8.2 (b2016030813)
Java: Oracle Corporation 1.8.0_101
I’ve attempted to increase the “Read Timeout” value in Project>Properties>Client>Timing>Read Timeout, but the default value was 60,000 ms and the error above references 120,000 ms and increasing this value resulted in identical behavior. Is there some other location I could increase the timeout value?
Additionally, 3 of the 10 devices will browse all tags successfully. Are there constraints related to the processing capacity of each tunneller host machine?
I should add that I did select the “Use DA2 when possible” checkbox and deselected “Use Async Operations” on the OPC-DA server settings to get to this point.