ASTECH LDM41A - SE - Display;Set Error Mode [0;1;2]; AC - Display Set ALARM Center

LDM41A and LDM42A Manual Commands and Parameter
ASTECH GmbH Page 33
Table 7: Examples for Scale factor
Scale factor
Resolution
Output
Output Unit
SF1
1 mm
012.345
m
SF10
0.1 mm
123.450
dm
SF1.0936
0.01 yard
013.500
yard
SF3.28084
0.01 feet
040.501
feet
SF0.3937
1 inch
004.860
100 inch
SF-1
1 mm
-12.345
m
Note: Following a change in the scale factor, the settings for digital
and/or analog output and offset must be matched accordingly!
8.13 SE – display/set error mode [0/1/2]
SE (error mode) allows you to configure the behaviour of the digital switching
output (alarm) and/or the analog output following an error message (E15, E16,
E17). Depending on the particular LDM41A and LDM42A application
environment, error messages have to be handled in different ways.
Available setting options are 0, 1 and 2 with the following effects in the case of
an error:
Table 8 : Meaning of SE
SE
Digital switching output (Alarm)
Analog output (4 -20 mA)
0
ALARM of latest valid
measurement
Outputs current of last valid
measurement
1
Positive alarm hysteresis = LOW
Negative alarm hysteresis = HIGH
RE >RB: Current =3 mA
RE <RB: Current =21 mA
2
Positive alarm hysteresis = HIGH
Negative alarm hysteresis = LOW
RE >RB: Current =21 mA
RE <RB: Current =3 mA
8.14 AC – display set ALARM center
AC sets the beginning of the distance range, for which the switching output
will be turned active. The length of this active range can be set using the AW
parameter.