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FAQ
The following information is provided as a guide that you can refer to when troubleshooting. If you still can’t
solve your problem, please email the details of the problem to Moxa’s tech support engineers. We will do
further analysis and then contact with a solution.
How to set Active OPC to get better connection quality
iThe oLogik W5300 uses a Heartbeat signal to check the connection quality between Active OPC server and the
device. In the event of a low bandwidth cellular connection, Active OPC will lose the heartbeat signal of the
“Heartbeat Interval.” We suggest using a value greater than 60 seconds. For Active OPC server, the time out
value of the Modbus gateway function should be greater than the heartbeat interval setting.
Service delay time
Based on our own testing results, the delay time should be less than 3 seconds.
Which TCP ports should Initial open?
Four ports should be opened: 9900, 9500, 9300, and 502. Note that 9900 is definable; please make sure that
the port numbers are defined correctly.
