ATIM Cloud Wireless ACW/LW8-MR4, User Manual, Page: 27 / 36

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ATIM_ACW-MR4_UG_EN_V1.5
The data contained in the frame will then include the value of the four inputs as well as a flag indicating which input
has been triggered (note that bits 4 - 7 will always be at "0" in a periodic measurement frame).
EXAMPLE
0xA0 01 12 => Input 1 change from high to low state (0x12 = 0b00010010).
0xA0 01 21 => Input 2 change from high to low state (0x21 = 0b00100001).
0xA0 01 03 => Every input flag is set to 0 (0x03 = 0b00000011). It means this frame is a periodical measurement
frame and has not been sent after an input state change.
Alert measurement frame
NOTE
The ACW-MR4, alerts only apply when a counter is exceeded.
If the Timestamp is activated, 4 bytes with the Timestamp value will be preceded by the header (byte 1).
For each of the channels in alert a header is inserted and is constituted as follows:
Byte1 Byte2 Byte3
Frame header
(0xA0 without timestamp)
(0xE0 with timestamp)
Channel header
(0x01)
Data
Byte3 (Data)
Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0
IN4 state
change Flag
IN3 state
change Flag
IN2 state
change Flag
IN1 state
change Flag
IN4 state IN3 state IN2 state IN1 state
Byte 1 - Header
Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0
New
generation
= 1
Timestamp Measurement
frame
= 0
Reserve
d
= 0
Alert frame
= 0x0d
Channel Header
Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0
Alert type Number of the channel Measurement type