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LabView Modbus Communication Rs232

Hi All,

I  try to communicate with a CO2 analyser from ABB via the RS232 interface and Modbus. I am reading the holding register 40001.
This is what my programme looks like:

Ludmila57_1-1632387653356.png

After initialisation I get the warning 1073676294. There is no error in the reader module, but Holding Register is 0.
What have I done wrong?

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Hi,

You can learn about this warning here. Error 1073676294 (Hex 0x3FFF0006)  from VISA Read in LabVIEW - National Instruments (ni.com)

Please let us know if you have any further questions. 

bhovhann
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