Internet PLC Forum

General => Technical support => Topic started by: CMS on August 01, 2006, 07:32:32 PM

Title: T100MD+ as tacho/pulsefrequency
Post by: CMS on August 01, 2006, 07:32:32 PM

I am trying to configure my T100MD+888 to take an input from a hall effect sensor providing a square wave output.

The first line of my program has the " first scan" bit and then a fuction box where " PMON 3" is written.

The second line has the "clock 0.05s" bit and then function box where "DM[1] = PULSEFREQUENCY (3)" is written

When I write to the PLC and test the DM[1] value is always at zero, i have a few different inputs ie dig in 3 pulsed straight to ground instead of using the sensor, but nothing works

I am pressuming I am not programming it correctly.

Can anyone suggest anything?

Thanks

Title: Re:T100MD+ as tacho/pulsefrequency
Post by: support on August 01, 2006, 07:36:27 PM

try PMON 1, not PMON 3. Frequency measurement channel 1 is mapped to input #3. See page 1-2  of your user's manual for details.

Title: Re:T100MD+ as tacho/pulsefrequency
Post by: CMS on August 01, 2006, 08:28:07 PM

Thanks

That did the trick