Honeywell C7355A User Manual page 10

C7355A ROOM IAQ MONITOR
Measurements Adjustment via MODBUS:
1. Temperature
2. Humidity
3. CO
2
4. TVOC coefficient
5. Particle coefficient
Use MODBUS PC software to operate according to the following table:
Temperature
value adjustment
Function code 3(Read)/16(Write) 3(Read)/16(Write) 3(Read)/16(Write) 3(Read)/16(Write) 3(Read)/16(Write)
Starting point 4
(Base 0)
Data length 2
Data type 32 Bit Float
Big-endian
Setting value Standard reading -
C7355A local
temperature
measured value
Setting range -9.00–+9.00 °F(--
5.00–+5.00 °C)
31-00434—01
Table 4. Measurement Adjustment via MODBUS.
RH value
adjustment
6 14
2 1
32 Bit Float INT16
Big-endian
Standard reading - Standard reading -
C7355A local C7355A local CO
humidity measured
measured value
value
-10.00– -300–+300 ppm
+10.00%RH
10
CO value
TVOC coefficient
2
adjustment adjustment
12
2
32 Bit Float
Big-endian
Standard
reading/TVOC
2
local measured
value
0.001–65.000
times
Particle total
environmental
coefficient
adjustment
1224
2
32 Bit Float
Big-endian
Standard reading X
C7355A local
PM2.5 average
measured value
0.001–10.000
times