Author Topic: PulseFrequency & Input #3  (Read 10721 times)

lyndon

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PulseFrequency & Input #3
« on: April 21, 2003, 03:03:47 PM »
Would it be possible to use the Special I/O input #3 as PulseFrequency Ch #1 to calculate speed and at the same time use its NPN optic-sensor to trigger a counter that would calculate the distance travelled eventually?

Why I can't simulate the Pulsefrequency similar to an ADC input ch even when I excusively used the Input #3 as a Pulsefrequency channel?



« Last Edit: December 31, 1969, 04:00:00 PM by 1076562000 »

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Re: PulseFrequency & Input #3
« Reply #1 on: April 21, 2003, 03:12:54 PM »
No, if the input is used as pusle measurement then it cannot be used as high speed counter anymore. You can feed the input from to both input #3 and #5 and use the second channel of HSC for counting distance.

There is no simulation for pulse measurement function. Input #3 on the TRiLOGI is purely a digital input only. On the M-series PLC the it happens to share the pulse measurement input with input #3 but in other PLCs design in future this may not always be the case.
« Last Edit: December 31, 1969, 04:00:00 PM by 1076562000 »
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