Axetris AG
LGD Compact Integration Guide V1.8
04.12.2019
30/34
Table 13
Explanation of the Version-response
Byte
Value
Description
7-22
String (16 bytes)
Firmware version
23-54
String (32 bytes)
Serial number of the system
55-56
Integer 16 (2 bytes)
Checksum firmware
57-58
Integer 16 (2 bytes)
Checksum tools
59-60
Integer 16 (2 bytes)
Checksum config
61
Integer 8 (1 byte)
Checksum hardware
62
Integer 8 (1 byte)
Checksum update
After power-on the sensor will send this Version-packet only once. This also indicates a
startup or reset of the sensor.
Stop measurement (Idle)
Send the
Idle
-command to stop the current measurement. This allows accessing (
Ping
) the user
parameters.
Command in Hex
7B 49
08 00 00 EA
4A
7D
Command in ASCII
{ I
. .
. .
J
}
As a confirmation, the sensor responds with an
Idle
(without any data). The sensor now is in
Idle
-mode
(standby) and waits for further commands. It won’t send any further data or packages.
Ping user data
With the
Ping
command user data can be asked from the sensor. Please note that the sensor needs to be
in
Idle
-mode to have access to the user data.
Command in Hex
7B 50
08 00 10 00
1D
7D
Command in ASCII
{ P
. .
0 .
.
}
The sensor transmits a
Ping
-packet with the following content:
Table 14
Response
from the sensor with description of the bytes
Byte
Possible HEX
Description
1
– 4
7B 50 50 00
Start of packet with size (80 bytes)
5
– 6
00 00
status code bytes
7
– 10
00 00 40 40
Concentration gas 1 Offset
(here 3)
11
– 14
CD CC 8C 3F
Concentration gas 1 Span
(here 1.1)
15
– 18
00 00 00 00
Reserved variable for future use (dummy)
19
– 22
00 00 00 00
Reserved variable for future use (dummy)
23
– 26
00 00 00 00
Analog output: Min concentration
(here: 0)
