Particulate Sensor / Pressure /Humidity /VOC sensor

24v / Modbus - inital modbusid = 65 baud = 9600

uses low cost BME680 for pressure, humidity, temp and voc it also uses 2x pms5003 to measure particulate matter

details about the parameters are in the PDF's of the individual sensors

RS-485 and 24v are hooked up by 1 M12 connector

modbus registers:

1: pressure

2: humidity

3: a_pm1_0_atm

4: a_pm2_5_atm

5: a_pm10_0_atm

6: a_pm1_0_cf_1

7: a_pm2_5_cf_1

8: a_pm10_0_cf_1

9: a_p_0_3_um

10: a_p_0_5_um

11: a_p_1_0_um

12: a_p_2_5_um

13: a_p_5_0_um

14: a_p_10_0_um

15: b_pm1_0_atm

16: b_pm2_5_atm

17: b_pm10_0_atm

18: b_pm1_0_cf_1

19: b_pm2_5_cf_1

20: b_pm10_0_cf_1

21: b_p_0_3_um

22: b_p_0_5_um

23: b_p_1_0_um

24: b_p_2_5_um

25: b_p_5_0_um

26: b_p_10_0_um

27: voc

28: temp