ATIM Atim Cloud Wireless ACW/LW8-TCR, User Manual

Page: 20 / 31

20
ATIM_ACW-TCR_UG_EN_V1.0
The different type of frames
Type of frame Data size Descriptions
0x00 -- Reserved
0x01 4 bytes Keep alive frame
0x02 0 bytes Downlink request for network testing
0x03 -- Reserved
0x04 -- Reserved
0x05 1 byte Teste frame with counter
0x06 Variable (Cfg box) Answer to a configuration frame
0x07 Variable (Cfg box) Answer to a command frame
0x08 Variable (Cfg box) Answer to an error frame
0x09 -- Reserved
0x0a -- Reserved
0x0b -- Reserved
0x0c -- Reserved
0x0d Variable Alert measurement frame (threshold crossing or return to normal), followed by
the sample of each of the alert channels
0x0e TBD General error - TBD (memory, ...)
0x0f Variable ... Subframe for ACW. In function of the ACW product
Measuring frame
If the Timestamp is enabled, 4 bytes with the Timestamp value will be preceded by the header (byte 1).
WARNING: if Depth of history or Number of samplings is greater than 1, the frame emission period will be added
after header (byte 1) on two bytes (Little Endian encoding, LSB first)
For each channel, a header is inserted below and is constituted as follows:
Channel header
Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0
Reserved= 0 Number of the channel Type of measure
Byte 1 - Header
Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0
New
generation= 1
Timestamp Measuring
frame= 1
Depth of history (-1)
Max: 4
Number of samplings (-1)
Max: 8