Interface Connection
LDM41E and LDM42E Manual
Page 40
ASTECH GmbH
dec+sig: 004.996_000005<CR><LF>
(bad signal quality)
dec+sig: 004.996_000985<CR><LF>
(good signal quality)
Distance = 4,996 m, SF10
dec:
049.960<CR><LF>
hex:
_00C328<CR><LF>
(= 49960 = 4996 mm × SF10)
dec+sig: 049.960_000005<CR><LF>
Error case
dec/hex: E15<CR><LF>
(see page 45, chapoter 11, Error Codes)
9.4
Digital Switching Output (Alarm)
With the help of a user-selectable distance threshold, the switching output
can be set to monitor objects or conditions for positive or negative overstep.
For example, using the digital switching output, an object which was selected
for measurement can be monitored for excision of a threshold value. To do
this, parameter settings for a measurement window are required. Settings for
this window can be made via the three parameters: Alarm Center (AC), Alarm
Hysteresis (AH) and Alarm Width. The range which will be subject to
monitoring begins at AC and ends at AC+AW. Switching transitions can be set
via parameter AH.
The logic state of the switching output follows from the mathematical sign of
AH.
In the case of a positive AH, the output switches
- with increasing distance:
from LOW to HIGH if the distance is greater than (AC ±AH/2)
from HIGH to LOW if the distance is greater than (AC+AW+AH/2)
- with decreasing distance:
from LOW to HIGH if the distance is smaller than (AC +AW-AH/2)
from HIGH to LOW the distance is smaller than (AC-AH/2)