40
ATIM_ACW-THAQ_UG_FR_V1.7
g.
LED Indicator threshold configuration
The value of byte 2 represents the limit value between
GREEN
and YELLOW flashing.
The value of byte 3 represents the limit value between YELLOW and
ORANGE
flashing.
The value of byte 4 represents the limit value between
ORANGE
and
RED
flashing.
NOTE
All values are in tens of PPM, to configure a threshold of 500 it will be necessary to send 50 (or 0x32 in hexadecimal).
EXEMPLE
For 0x9F3250C800 frame:
We have for the first threshold 0x32 or 50 in decimal or 500 ppm, 0x50 for the second is 80 in decimal or 800ppm and for the
last 0xC8 is 200 in decimal or 2000ppm.
The flashes according to the CO
2
level will be as follow:
From 0 to 499 ppm: flashing
GREEN
From 500 to 799 ppm: flashing YELLOW
From 800 to 1999 ppm: flashing
ORANGE
More than 2000 ppm: flashing
RED
h.
Night mode configuration
Bytes 1 to 3 have a fixed value for the night mode configuration.
Byte 4 is the minutes while byte 5 is the hours for the start time.
Byte 6 is the minutes and byte 7 is the hours for the end time of the night mode.
The minutes and hours must be encoded in BCD (first 4 bits for the tens and the last 4 bits for the unit).
Finally, byte 8 can take two values: 0x00 to disable night mode or 0xFF to activate night mode.
EXAMPLE
If the start time of the mode is 20:45 summer end time 6:15, the corresponding values for the bytes from 4 to 7 will be:
Byte 4 = > 0x20 / Byte 5 = > 0x45 for the start time
Byte 1
Byte 2
Byte 3
Byte 4
Byte 5
Parameter code
Parameter value
Parameter value
Parameter value
Parameter value
0x9F
0xaa
0xbb
0xcc
0x00
Byte 1
Byte 2
Byte 3
Byte 4
Byte 5
Byte 6
Byte 7
Byte 8
Parameter
code
Length of
the frame
Index
Parameter
value
Parameter
value
Parameter
value
Parameter
value
Parameter
value
0xE0
0x06
0x00
0xaa
0xbb
0xcc
0xdd
0xee
