Axetris AG
LGD F200P2 Operating Instructions - Rev D
19.09.2018
39/60
3.7 Change of user parameters
To change the user parameters of the sensor, follow the procedure as given below:
Send
Idle
(I) command
The sensor enters
Idle
mode and then is able to access the user data in the RAM (see Chapter 3.8.2)
Ping
(P) user data
With the
Ping
command the sensor sends a ping packet with the user parameters from the RAM (see
Chapter 3.8.3).
Configure (C) user data
The new values now can be sent to the sensor with a
Config
command (see Chapter 3.8.4).
Save (S)
to EEPROM
To save the new parameters to the EEPROM (to be available after the next sensor startup) please send
the
Save
command (see Chapter 3.8.5).
Start measurement (M)
Start the
Measurement
again to go back to normal measurement mode (see Chapter 3.8.6).
Important: It is absolutely necessary to write all the user parameters in one packet. If just
one value needs to be changed, ping all values from the sensor. Then overwrite the desired
value and write all the values back to the sensor.
It is not necessary to save the user data to EEPROM. But if they are not saved 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.
3.8 Commands
Version
This command is used to obtain the version of the firmware from the sensor. It has a length of 8 bytes and
there are no further parameters that can be added to this command.
Command in Hex
7B 56
08 00 00 00
27
7D
Command in ASCII
{ V
. .
. .
'
}
The response contains the sensor serial number and diverse checksums. The response is 64 bytes long;
inside the packet the data has the following structure (see
Table 8
).
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