Page 80
Control Menu, Set Sensor Parameter
optoNCDT 2300
7.6.3 Synchronization
Synchronization mode Master on Use at simultaneous synchronization
Master on alternating / Slave in Use at alternating synchronization
No synchronization
Termination Sync/Trig-input Checkbox Checkbox activates the terminating resistor for line matching.
The synchronous connections may not be temporarily connected to the operating voltage and / or GND. Risk of
destruction of the sensor by overloading.
If two or more optoNCDT 2300 measure against the same target, the sensors can be synchronized. The optoNCDT 2300 distinguishes
between two types of synchronization.
Type Used for
Simultaneous
synchronization
Both sensors measure in the
same cycle
Measurement of differences (thickness, difference in height) on opaque ob-
jects. Here, Sensor 1 must be programmed as the “Master“ and Sensor 2 as
the “Slave“.
Alternating
synchronization
Both sensors measure alterna-
tively
Outputrate≤measuringrate/2
Thickness measurements on translucent objects or measurements of differ-
ence on closely spaced measurement points. The alternating synchronization
requires that the lasers are switched on and off alternately so that the two
sensors do not interfere with each other optically. Therefor one sensor is to
program as “Master alternating“ and one as “Slave“. There can be only one
master to be connected to a slave.
Fig. 41 Characteristics of and uses for the different types of synchronization
i
Do not run the sensor not synchronized. Synchronized sensors must be adjusted to the same measuring rate. Do not ever con-
nect two masters with each other.
Measuring rate in kHz 1.5 2.5 5 10 20 30 49.140
Synchronization rate in kHz
1.43 ... 1.5 2.4 ... 2.5 4.8 ... 5 9.5 ... 10 19 ... 20 28.5 ... 30 46.6 ... 49
Fig. 42 Tolerances for the synchronization rates
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