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that the highest legal value is 999, giving an output rate of about 0.1 Hz, or one
value every 10 seconds.
Synchronize (reset filter)
Command:
$S>
Reply:
S>
This command causes the SLS sensor to restart its filtering cycle from scratch. It
may be used to ensure that several probes are in sync with each other.
Set Nominal Value (for calibration)
Command:
$Nnnnn>
$Nrrr.rrr>
$Nrr.rrrrr>
(measurement unit = LSBs)
(measurement unit = millimeters)
(measurement unit = inches)
Reply:
Nnnnn>
Nrrr.rrr>
Nrr.rrrrr>
(nnnn same as in command)
(rrr.rrr same as in command)
(rr.rrrrr same as in command)
This command is used to set a nominal value to be used at a subsequent
calibration (see section Calibrate).
Calibrate
Command:
$C>
Reply:
C1>
C0>
(calibration was OK) (calibration failed)
The SLS sensor can be calibrated against a reference if, for example, it is desired
to measure thickness of an object. The reference object should be in place and its
thickness should have been given to the probe with the ”Nominal Value”
command before the calibration is started.
Example:
An SLS sensor is set up to measure the thickness of steel plates (in millimeters).
The plates rest on a flat surface while they are measured. A calibration piece with
the known thickness of 50 mm is used. First, the Nominal Value command is
given:
$N50.0>
The SLS sensor replies:
N50.0>
Then the calibration piece is put in place, and the Calibration command is given:
$C>
The SLS sensor replies:
C1> (presuming that the calibration was OK)
After this, the SLS sensor will present the actual thickness in mm of every plate
that passes.
Reset Calibration
Command:
$R>
Reply:
R>
This command resets the offsets calculated by a calibration to zero.
Parameter Setup
Command:
$P>
Reply:
PWD>
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