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IP65 Modbus Light, Temperature, Humidity Sensor connected to HMI
If you are looking for a light, temperature and humidity sensor to connect to our HMI…
HMI project
| Basic HMI project for read the sensor values via the Modbus protocole over RS485
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IP65, Slave Modbus RS485 Light + Temperature + Humidity Sensor  Size of the plastic case: 90 x 58 x 35 mm |
Wirring
| Wire colour | Description |
| Red | Power + 12-24 VDC |
| Green | Power – GND |
| Yellow | RS485 A+ |
| Blue | RS485 B- |
Communication parameters
Default 9600 bds, 8 bits, none, 1 stop
Register
| Modbus Register | Description | Data type | |
| 4×0 | Luminosity/Light (Lux) |
Read only 16 bits unsigned | 0 to 65535 |
| 4×1 | Temperature (°C *100) |
Read only 16 bits signed | -4000 to +12300 |
| 4×2 | Humidity (% *100) |
Read only 16 bits unsigned | 0 to 10000 |
| 4×100 | Not useful | Read / Write 16 bits signed | |
| 4×101 | Total number of measurement points | Read / Write 16 bits signed | 1-20 |
| 4×102 | Modbus Slave ID / Device address | Read / Write 16 bits signed | Default 1 |
| 4×103 | Baud rate (1=2400,..,3=9600,..,6=115200) | Read / Write 16 bits signed | Default 3 = 9600 bds |
| 4×104 | Not useful | Read / Write 16 bits signed | |
| 4×105 | Not useful | Read / Write 16 bits signed |