Sixteen 0-10V Analog Outputs Modbus

• MR

  Michael Rushton

  7/3/25, 11:26 AM
  Hi,
  Is there any information on the modbus registers for this HAT?
  
  This link says it is still under construction
  
  Thanks for any assistance
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• 

  alexburcea Staff member

  7/3/25, 11:56 AM
  The file has been updated. Let me know if you have any trouble using the Modbus.
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• MR

  Michael Rushton

  9/22/25, 7:53 PM

  Hi,

  I am attempting to use the card vis RS485 directly ( not using an RPI)

  ID switches are set to zero

  Terminator is on 

  485TX, 485RX are off

  I have set up a modbus scanner using a USB to RS485 using this tool

  Modbus Scanner: Perfect to Discover and Test Modbus - Chipkin

  set to 9600,8,N,1

  I can see the RS485 signals on the RS485 input to the board

  Can you suggest anything else I need to configure?

  Next step is to revert to using an RPI

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• MR

  Michael Rushton

  9/22/25, 7:55 PM

  Hi,

  I am attempting to use the card vis RS485 directly ( not using an RPI)

  ID switches are set to zero

  Terminator is on 

  485TX, 485RX are off

  I have set up a modbus scanner using a USB to RS485 using this tool

  Modbus Scanner: Perfect to Discover and Test Modbus - Chipkin

  set to 9600,8,N,1

  I can see the RS485 signals on the RS485 input to the board

  Can you suggest anything else I need to configure?

  Next step is to revert to using an RPI

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• 

  alexburcea Staff member

  9/22/25, 9:41 PM

  Hi,

  The default port settings for Modbus are 38400,8,N,1.

  You either use the same on your scanner or change it using the command line interface (check the online help for details).

   

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• MR

  Michael Rushton

  9/24/25, 4:37 PM

  Ok great, 38400 did the trick!

  Thanks

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