OPC Server can't communicate though it retries to communicate for the set times, and OPC Server tries to reconnect after it closes the connection.
GX WORKS 2 PROGRAM SETTING SERIAL NUMBERS
Ethernet units that have serial numbers with 05051 or later as the upper five digits and function version B or later can use this function.For other models, use Ping. The use of the Keep Alive function to perform existence checks is recommended when the Q Series is used.It may become to impossible to reconnect PLC without PLC's reset,if you select the existence confirmation setting by PING.
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