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3.4 Change of user parameters
To change the user parameters of the device, follow the procedure as given below:
Idle
Send
(I) command
Idle
The device enters
mode and then is able to access the user data in the RAM (see Chapter 3.5.2)
Ping
(P) user data
Ping
With the
command the device sends a ping packet with the user parameters from the RAM (see Chapter
3.5.3).
Configure (C) user data
The new values now can be sent to the device with a
Save (S)
to EEPROM
To save the new parameters to EEPROM (permanently saved) please send the
3.5.5).
Start measurement (M)
Measurement
Start the
It is necessary to write all the user parameters in one packet. If just one value needs to be changed, ping
all values from the device. Then overwrite the desired value and write all the values back to the device.
If user data are not saved to EEPROM they will be lost after a reboot of the system.
The write cycles of an EEPROM are limited depending on external conditions. Under unfavorable
conditions the write cycles might be limited to 10'000 only.
3.5 Commands
Version
This command is used to obtain the version of the firmware from the device. It has a length of 8 bytes and
there are no further parameters that can be added to this command.
Command in Hex
Command in ASCII
The response (64 bytes) contains the device serial number and diverse checksums.
Table 13 Explanation of the Version-response
Byte
Value
7-22
String (16 bytes)
23-54
String (32 bytes)
55-56
Integer 16 (2 bytes)
57-58
Integer 16 (2 bytes)
59-60
Integer 16 (2 bytes)
61
Integer 8 (1 byte)
62
Integer 8 (1 byte)
After power-on the device will send this
Axetris AG
LGD Compact Operating & Integration Instructions; Rev. D
again to go back to normal measurement mode (see Chapter 3.5.6).
Config
command (see Chapter 3.5.4).
7B 56 08 00 00 00
{ V . . . .
Description
Firmware version
Serial number of the system
Checksum firmware
Checksum tools
Checksum config
Checksum hardware
Checksum update
Version
-packet only once. This also indicates a startup / reset.
Save
command (see Chapter
27
7D
'
}
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