CODESYS - the IEC 61131-3 automation software

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PostPosted: Tue Apr 02, 2019 4:09 pm 
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Joined: Wed Mar 20, 2019 2:14 pm
Posts: 1
Hello Everyone,

I am new to the modbus communication. I trying to access the Edam 5029[img]
Quote:
Code:
[code][img][/img][/code]
[/img] IO interface using RS485. I am using EASYSYNC usb2-5004-m usb to rs485 converter.

I am able to write to a coil or resistor but I am unable to read from coil or resistor. Everytime it is giving me error No response received from remote Unit/Unable to decode response.

I have already unable CRC check for EDAM 5029.

Here I am attaching my python code and relevent images for your reference.

Any guide will be helpful.

Thanks & Regards,
Bhavin


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