Monitoring Machines

[Grugh_Mike]

I have around 10 to 15 different machines in my plant.

My project is to get the working status of all the mahines i.e. ON/OFF status.

As far as i checked out, almost all are giving out a constant 24V signal when they are in ON state.

Some of them are giving out a pulse signal during ON/OFF.

Can i use a DIO DAQ card to detect the status.

In case of the 24V supplying machines, 0-24V DIO card (ex. NI PCI 6510) can be used to detect the ON/OFF status.

While for the pulse generating machines. can i use the same card with modification in my LV code for that particular machines?

Please help me on this.

[RavensFan]

How long do the pulses last?

I think if you did a data acquisition where you acquired a digital waveform long enough that you have a pulse or two go by, you should easily be able to distinquish the inputs that are on constantly vs. those that were pulsed.

[F._Schubert]

Or you just physically insert flip-flops in the lines.

Felix

[Grugh_Mike]

Thank you Raven and Felix.

I have not yet tested the ystem for its pulse duration.

If the pulse width is too low, can i increase the pulse width using some circuit.ie PWM?

Felix: If using flip flops, which chip should i go with?

[F._Schubert]

My start would be to look if something like this flip-flop from wago fits. I'd look also for alternative products from Phoenix Contacts, Weidemüller...

Felix

[MoReese]

Yes, the DIO would be the best choice for the machines putting out a steady 24V.  Do any of the machines have ethernet?  You could check the on/off status through the network if that is the case.