Hey....I've tried reading holding registers from siemens driver to PC via waveshare rs485 to ethernet converter. I've used a python program to read using modbus protocol. I didn't get any error. I've tried reading series of registers into an array. But it just showed 0 in the array when read. But no error popped up.  Connection has been established, but after that I'm not sure why I'm not able to get data. Do u have any idea ? 

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Split from Modbus TCP/IP communication using three waveshare rs485 to TCP/IP converter..