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Operation
optoNCDT 1750
There is no linear relationship between the position of the peaks in the video signal and the output measure-
ment value.
6.3
Programming via ASCII Commands
As an added feature you can program the sensor via an ASCII interface, physically the RS422. This requires,
that the sensor must be connected either to a serial RS422 interface via a suitable interface converter, see
Chap.
, or a plug-in-card to a PC / PLC.
ay attention in the programs used to the correct RS422 default setting.
Once connected, you can transmit the commands via the terminal to the sensor.
6.4
Timing, Measurement Value Flux
The sensor requires four cycles for measurement and calculation without triggering:
Each cycle takes 133.3 µs at a measuring rate of 7.5 kHz. The measured value N is available at the output af-
ter four cycles. The delay between acquisition and output is therefore 553 µs. As the processing in the cycles
occurs parallel, after another 133.3 µs, the next measured value (N+1) is output.
Summary of Contents for optoNCDT 1750
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