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Associate
September 21, 2026
Question

32UI (Universal Input), 16 AO (Analog Output) and 16 DO (Digital Output) over RS485 communication in a Daisy chain

  • September 21, 2026
  • 2 replies
  • 13 views

I am not getting any IO expansion Module which can support these feature as

32UI (Universal Input), 16 AO (Analog Output) and 16 DO (Digital Output) over RS485 communication in a Daisy chain

Universal Inputs

  • 0-5V DC
  • 0-10V DC
  • 0-20mA / 4-20mA
  • 5kΩ Thermistor
  • 10kΩ Thermistor
  • RTD (100Ω / PT100/PT1000)
  • Dry Contact / Binary Input
  • Pulse Count Input

Universal Outputs

  • 0-10V Analog Output
  • 0-20mA / 4-20mA Analog Output
  • Relay / Binary Outputs

Please suggest

2 replies

mƎALLEm
ST Technical Moderator
September 21, 2026

Hello,

Nothing to do with STM32 and seems to be a very specific hardware. 

Need to develop your own board or look for modules for each function and assemble them to construct the needed module.

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Andrew Neil
Super User
September 21, 2026

This is ST’s community, for help with ST products - I don’t think ST has any such product as this?

I think you’ll need to search general (industrial) electronics catalogues; may be find an (industrial) electronics general forum …

Are you looking for an off-the-shelf, ready-built product?

 

https://www.google.com/search?q=Universal+Input%2C+Analog+Output%2C+Digital+Output+over+RS485

A complex system that works is invariably found to have evolved from a simple system that worked.A complex system designed from scratch never works and cannot be patched up to make it work.