tiria

Read frequency/Pulses from a flow meter using Gx-Works 3

6 posts in this topic

 

.Hello guys,

What is an example of a  program will read  frequency/Pulse output from a flow meter to Gx-Works 3 using a high speed counter?(PLC is FX5U)

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Have you taken a look at chapter 24(High speed input/output functions)  of the iQ-F user manual application.

It's in the e-manual viewer

 

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Thanks @Gambit.I will take a look.

Normally HS counters  count up or down to a specified value as the input changes until a preset value is attained or it is reset .I am trying to figure out how you can actually  monitor incoming frequency(which indicates the flow rate) in real time which I can then scale accordingly.

Edited by tiria

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Hello @tiria .

You may see the following instructions:

SDP - Measuring the density of 16 bit binary pulses

or

DSPD - Measuring the density of 32 bit binary pulses

Best regards.

Edited by kraykov

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We use a similar flowmeter from a competitor to E-H.  Instead of pulses, we use the analog 4-20mA output signal.  The analog signal is less prone to interference and lost counts.  Our recent machines communicate with the flowmeters over ethernet/IP & Modbus.

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Thanks @kraykov .I'll take a look.

@drforsythe We just wanted an alternative to the 4-20mA to act as a standby while we were restructuring the system. 

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