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MODNET string variable configuration

Summary:

I have configured a string variable communicating to a PLC via MODNET and I can only see the first 2 characters of the string. How can I see the whole string?

Solution:

If you specify a string tag with the address 40001, the MODNET driver will only read register 40001 (2 bytes so 2 characters). If you want a string longer than 2 characters you have to create your tag as an array of characters so the driver knows how long the string is. So if you want a string of length 10 you need to setup an array of length 5. image


Keywords:

MODBUS

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