Number of connection count of Modbus TCP Driver
When I set active for one device. The device got two connection number.
Why WinCC OA need two connection for one device active ?
Is there any way to get one connection ? We are only read from the device.
I tested it.
I have no idea why.. but some time it got one connection. sometimes it got 2 connection.
can you give me a answer why?
At the Modbus PLC configuration you can configure that only the active server should connect to the PLC with the setting 'Only active driver'.