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Hi all. For a few years, I have been using the HSC frequency measurement on the V350. My program uses the example that was given by Unitronics and I have not altered it much. Suddenly, my programs have stopped working when I download them to a new PLC. The HSC behaves unusual and gives me false readings. My program is to control micro water turbines and it uses HSC to measure the frequency of the generator. I am using a simple frequency converter that gives me pulses into my HSCO port. The pulses are 50Hz and I confirm using a digital meter that the input receives 50Hz.
