How to connect PT-100 to Modbus RS485 converter
This small PT-100 to Modbus RS485 can be useful for connect some PT-100 temperature sensors.
We use a just read the Modbus converter register.
HMI screen in operation with 2 PT-100 sensors
PT-100 to RS485 DIN-Rail converter module
Working voltage: 8-25 VDC
Working current: 8-13 mA
Serial port baud rate: 9600 (default), N, 8, 1
Up to 247 modules. For 16 or more, we suggest to use a RS485 repeater
For 3 wires or 2 wires PT-100 sensor
Temperature range: -20 to +220 °C
Size: 60 X 30 X 16 mm
PT-100 wiring with 2 or 3 wires
RS485 and Power supply wiring
With this HMI project, you can try quickly the solution : Download it!