PulseFrequency & Input #3

[lyndon]

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?

[support]

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.