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Measured input to IO LC1 card


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I Have 4 weighing systems, identical hardware and software, one of which has a weight display issue.

The reading whether empty or loaded fluctuates. I have measured the input to the IO LC1 card and it is steady to within a 0.1mV. What am I missing? the system has been calibrated, but doesn't improve it.

The other 3 system work fine.

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  • MVP 2023

Usually I have problems with weight cells only.
They failed due to mechanical damage or shock load on the weight device.
Did you test the replacement of a module with bad behavior into a good module from a system that works fine?

Is it possible that there is a source of electromagnetic interference near the device?

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  • MVP 2023

+1 to Kratmels suggestions.

Also, I know someone who had a weird issue and the cell was connected incorrectly, back to front I recall.  Was miles away in the bush, and he picked up the error looking at photos sent to him. Don't know the full ins and outs, though, just that it was a wrong connection.

cheers, Olfa

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  • NoamM changed the title to Measured input to IO LC1 card
  • MVP 2023
18 hours ago, Wastle said:

I have already changed the module.

Changed for new, or tried one of the others known good?

Ensure that all the plugs, cables and sockets connecting the expansion modules are fully in place and in good condition.  Do continuity checks on all the connections from source to destination.

cheers, Aus

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