Address
RW
Type
Unit
Register
count
Description
0x0016
R
uint16
-
1
Unit configuration flags (bits/description)
Bits
Description
15:2
Reserved
1
LPC configuration:
• 0 = No LPC
• 1 = LPC
0
Reserved
0x001A
R
int16
s
1
Seconds elapsed after last measurement data
update
0x001B
R
int16
-
1
Gas measurement validity
• 0 = Measurement is not valid
• 1 = Measurement is valid (includes 24-hour
stabilization time after power-up and
temperature is within valid range (below
38.0 °C)
Flags can be read separately from registers
0x0033 and 0x0034
0x001C
R
uint16
-
1
Temperature unit configuration
• 0 = Celsius (default)
• 1 = Fahrenheit
0x001F
R
int16
%
1
Device health index (combined percentage of
usage of sensor cells, decreases from 100 %)
• 100 % = Full health
• 0 % = All sensors over-aged
0x0033
R
int16
-
1
Gas cell stabilization invalidation flag
• 0 = 24-h stabilization time after power-up
has passed
• 1 = 24-h stabilization time after power-up not
passed and measurement is invalid
0x0034
R
int16
-
1
Gas cell temperature invalidation flag
• 0 = Cell temperature valid
• 1 = Cell temperature too high (
≥
38.0 °C) and
measurement invalid
0x0036
R
int16
-
1
Humidity compensation (gas compensation)
• 0 = Humidity compensation disabled
• 1 = Humidity compensation enabled
0x0037
R
int16
0.1 μg/m
3
1
Particulate matter PM
1
with linear correction
• For a value without linear correction, use
register 0x0075
Chapter 6 – Modbus interface description
47
Содержание AQT530
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