Expected duration: less than 1 week I need a device that will let me read some parameters off an air source heat pump. I have the Modbus register and need to read around 20 points and write to about 5. the communication will be via RS485. I'm hoping that this can be done relatively easily with an arduino or similar, so I can read/write the modbus points within the scene.
please quote for specifying the hardware required (I will purchase and build) and writing a program to give me what I need.
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