ATIM Cloud Wireless ACW Series - Frame format; Lists of the frames; Standard frames

10
ATIM_ACW-PIR_UG_EN_V1.4
Frame fromat
a. Lists of the frames
Name of the frame
Description
Keep alive frame
Periodic frame returning the battery status
Counting frame
In all modes, Issued periodically
Alert frame
Only in "alarm" mode. Emitted at each product detection
Casing-opening/antivandal
frame
In all modes. Issued as soon as the case of a product is opened, or when it is torn from
its wall (outdoor version and barrier only)
The counting, warning and case opening frames contain all the information relating to the state of the detector.
b. Standard frames
Standard frames includes alarm, counting and casing-opening frames.
Byte
Possible value
Description
0
0x32
Header
1
0x01
Casing-opening frame
0x08
Alarm frame
0x10
Counting frame
2
0x00
Casing-opening sensor, low state (4)
0x01
Casing-opening sensor, high state (4)
3
0xFF
Unused
4
0x00
DQ sensor: Enable (1)
0x01
DQ sensor: Disable (1)
0xFF
Unused
5
0xXX
Counting value (most significant
byte) (2)
6
0xYY
Counting value (least significant
byte) (2)
7
0xXX
Optional: Temperature value (most
significant byte) (3)
8
0xYY
Optional: Temperature value (least
significant byte) (3)
(1) : Only on ACW-ILB30 & ACW-ILB100, this is fog detection. If enabled, then alarms may be false positives.
(2) : The value of the counter to be decoded is therefore 0xXXYY. Automatically returns to 0x000 when incrementing
above 0xFFFF
(3) : The value to be decoded is therefore: 0xXXYY. It corresponds to the temperature sensor voltage in millivolts. See
section "Temperature sensor" for more information.