Advantech WISE-2410, Руководство пользователя

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39 WISE-2410 User Manual
Appendix A
W
ISE LPWAN
P
ayload
Format
– Address Mode 2-bits
When the Address Mode bit is unset 00, it indicates no Source Address is
encapsulated. If set 01 and 10, the Source Address is the least significant
two bytes and eight bytes of DevEUI, respectively.
– Frame Version bit
Two bits for frame structure version.
Frame Sequence Number: 1 byte, 0 ~ 255
The sequence number of data frame sent uplink to the gateway. Each time an uplink
packet transmitted done, the sequence number is increased for the next new uplink.
Total Length: 1 byte (optional)
When the First Segment bit of Frame Control is set, the Total Length octet will be
added to signal the server the total bytes of WISE payload data.
Source Address: 0/2/8 bytes (optional)
None, 2 LSB or 8 bytes of DevEUI according to the Address Mode bit of Frame Con-
trol.
If DevEUI is
74FE48FFFF19D121 , the sequential order of 2-bytes address starts with
D1 21 . For complete DevEUI address, the sequence will be 74 FE 48 FF FF 19 D1
21 .
A.1.2 WPayload
The WPayload structure is detailed chapter 1.4
A.1.3 WCRC
CRC: 1 byte
An 8-bit CRC-8-CCITT value calculated from WISE Payload data. It's a standard
CRC-8, with polynomial x
8
+x
2
+x+1 and initial value 0xFF.
A.1.4 Sensor data (I/O Type: 0x5)
 IO Type (bit 7 - 4): 0x5
 Sensor Range (bit 3 - 0):
(4 bit) Sensor Type
0x0 4096 - Temperature (°C)
0x4 4256 - Accelerometer
0x5 - 0xF (RFU)