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PLC Converting encoder pulses to hmi display

PLC Converting encoder pulses to hmi display

PLC Converting encoder pulses to hmi display

(OP)
I have an application where i am using a slc 5/05 controller. i have a quadrature encoder connected to a high speed counter. I have to transfer the pulses recieved from the encoder to diplay line speed on my hmi in ft/min. The encoder is tracking material at various line speeds. Is there a function in the rs logix 500 software that can convert the pulses? or what can be done to achieve this. Id sure appreciate the help.

RE: PLC Converting encoder pulses to hmi display

I am not aware of any function for making the conversion, but this seems like a fairly easy task, by simply counting the pulses during a specific time interval, and then doing the math.

(x pulses/sec.)(y ft./pulse)= z ft./sec

RE: PLC Converting encoder pulses to hmi display

The only thing you need to know is the relation between encoder revolution and linear travel. Encoders are normally coupled to machinery by pulleys, gear boxes, wheels, etc...

ratio(ft/rev) x encoder(rev/pulses) x Period (pulses/sec)

The period (1/frequency) can be calculated on-line by measuring the time between pulses (or revolution, set of pulses, etc) ...

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