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KeyenceCProg

Keyence C# .net programming with multi thread

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Hi, Guys. I am using C# to communicate with KV5000 PLC (the connection line is ethernet). My program is a windows form to control KV MC40V motor unit. I have two threads. The main thread connects to the PLC and keep the GUI button responsive and read motor position correctly. The second thread tries to read the motor position as well but always get the same wrong value(-858993460). Does anyone knows how to solve this kind problem. Thank you.
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