Triggering Measured Value Acquisition; Triggering Measured Value Output - MICRO-EPSILON optoNCDT ILR3800 Operating Instructions Manual

Operation ILR3800-100
The following are used as triggering conditions:
Level triggering with high level / low level.
Continuous measured value acquisition/output as long as the
selected level is present. Afterwards, the data acquisition/out-
put stops.
The pulse duration must be at least as long as one cycle.
The subsequent pause must also be at least as long as one
cycle.
U = Trigger signal
I
W = Displacement signal
Abb. 22 High trigger level (top) with analog output A
Edge triggering with rising or falling edge.
Starts the measured value acquisition as soon as the selec-
ted edge is detected at the trigger input. The sensor outputs
the specified number of measured values when the triggering
condition is met.
Value range of 1 ... 2.147.483.646.
The pulse duration must be at least 2 ms.
Abb. 23 HL trigger edge (top) with analog output A
Software triggering. The measured value acquisition is triggered by the command TRIGGERSW. After the trigger
event, the sensor outputs the previously defined number of measured values or starts continuous measured value
output. The measured value output can also be stopped using a command.
6.5.2

Triggering Measured Value Acquisition

Measured value acquisition triggering processes measurements that are taken after the trigger event. Previously ac-
quired measured values are discarded. Acquisition triggering therefore has a direct impact on the further processing of
measured values. The sensor corrects errors internally based on the settings in the saved configurations. In the case of
moving targets and data acquisition triggering, Micro-Epsilon recommends the Auto and Fast modes.
6.5.3

Triggering Measured Value Output

The measured values are computed continuously and independently of the trigger event. A trigger event merely triggers
output of the values via the RS422 interface.
i
Acquisition triggering requires data acquisition to be active in the sensor.
optoNCDT ILR3800
U
I
W
A
0
D
0
and RS422 output signal D
0
U
I
W
A
0
D
0
and RS422 output signal D
0
t
t
t
t
(bottom)
0
t
t
t
t
(bottom)
0
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