ML-x17 DATA LOGGER MANUAL
Manufacturers of low power instruments
page 55
4.19.2.8
Measurement commands
Some sensors do not automatically start sampling after power on or might require a maintenance cycle
now and then (e.g. wiping a lens of a turbidity sensor). If necessary measurement and maintenance
commands can be configured with the menu shown below:
4.19.2.9
Start maintenance command
Specify which value should be written to which register to instruct the device to perform a maintenance
cycle.
4.19.2.10
Maintenance interval
If it
’s not necessary to perform a maintenance cycle at every measurement sample, then please specify
the maintenance interval in number of samples, this will possible reduced power consumption and wear
of the maintenance device.
4.19.2.11
Maintenance ready status
If available specify the register and its expected value indicating when a maintenance cycle is concluded.
4.19.2.12
Maintenance ready after
If the device does not support a maintenance ready status register, please indicate how long a
maintenance cycle takes to complete.
4.19.2.13
Start measurement command
Specify which value should be written to which register to instruct the device to take a sample.
4.19.2.14
Measurement ready status
If available specify the register and its expected value indicating when a sample is concluded.
4.19.2.15
Measurement ready after
If the device does not support a measurement ready status register, please indicate how long a
measurement sample takes to complete.
MODBUS Measurement commands
[0] Exit
[1] Start maintenance command >> Register 2 (40003); Value 1
[2] Maintenance interval >> 1:24 Samples
[3] Maintenance ready status >> Register 3 (30004); Value 1
[4] Maintenance ready within >> Not used
[5] Start measurement command >> Register 0 (40001); Value 1
[6] Measurement ready status >> Register 1 (30002); Value 1
[7] Measurement ready within >> Not used
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