Axetris LGD Compact, Руководство по интеграции

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Axetris AG LGD Compact Integration Guide V1.8 04.12.2019 26/34
The general Command structure for data transmission to the sensor is given in Table 7 and an example is
given in Table 8 .
Table 7 General Command structure for data transmission to the sensor
Byte Value Description
1
“{“
Start of the packet
2 { P C M I S V} Command ID
3 0x08 Size of the packet LSB (least significant bit)
4 0x00 Size of the packet MSB (most significant bit)
5 0xXX Extended command and parameter
0x00 Additional zeros to reach multiple of 8
n -1 Check sum Check sum (sum from 1 to n-1= 0)
n
“}”
End of the packet
Table 8 Example of a Command to transmit data to the sensor (Ping user calibration)
Command in Hex 7B 50 08 00 10 00 1D 7D
Command in ASCII { P . . . . . }
Description
Start of packet {
Command (P = ping)
Packet size (here 8 bytes)
Extended command and Parameter (here 10)
Additional zeros to reach multiple of 8
Checksum
End of packet }
Analog to the Command structure, the Response packets have the same general format and are given in
Table 9 , with an example in Table 10 .
Table 9 General structure of the sensor Response
Byte Value Description
1
“{“
Start of the packet
2 {S P C M I V} Command ID
3-4 N=Size of the packet Size of the packet (in bytes)
5 Error status Flags [E W x x x x x x] Bit
0
: Error Flag; Bit
1
: Warning Flag.
The other 6 Bits are negligible.
6 Error status Code See Annex Fehler! Verweisquelle konnte nicht g
efunden werden. and Fehler! Verweisquelle konnte
nicht gefunden werden.
Data
Additional zeros to reach multiple of 8
n - 1 Check sum Check sum (sum from 1 to n-1 = 0)
n
“}”
End of the packet