Re: PLC Programming - anyone?

--- In CAD_CAM_EDM_DRO@y..., "Chris Clough" <cclough@x> wrote:
> Hi Dave,
>
> What I'll have is this.
>
> 3 solenoids
> 3 normally open switches
> 1 on/off dry contact that is controlled by the controller
>
> I'm using a Turner Technologies MC2001, so the Gecko's and such
aren't
> an option.
>
> If you could help, that'd be great.
>
> Thanks,
> -Chris Clough
>
> Xtech Engineering
> http://www.xtecheng.com/
> info@x...
> Ph# 866-55-XTECH
>
>
> -----Original Message-----
> From: dave_ace_me [mailto:davemucha@j...]
> Sent: Friday, February 22, 2002 11:24 PM
> To: CAD_CAM_EDM_DRO@y...
> Subject: [CAD_CAM_EDM_DRO] Re: PLC Programming - anyone?
>
> Hi Chris,
>
> just like any control devices, look for the signals
> you will need. Digital (on/off) or analogue (4-20mADC)
> analogue will always be a lot more.
>
> then look at the speed of the pulse train both
> input if reading a field device and output
> going to your device.
>
> Automationdirect.com offers a variety of units,
> small unit with slower speed and less memory
> to networkable units that can power an entire factory.
>
> Check the ratings on the input and output modules and
> see if they fit your requirements.
> both power and speed.
>
> A PLC can be cheaper than a PC running professional
> software, or if you have an old PC and use
> TurboCNC ($10) and a Gecko, ($150??) you can
> get by pretty cheap. remember if you use the
> PLC you need to learn the ladder lodgic language
> but if you use a CNC software package that runs
> on a PC, MAster5 and a decent Pentium II or better
> you can get great help on one of these sites.
> (currently a speed limitation on stepper pulses)
>
> A PLC is really nothing but a microprocessor
> and a software package.
>
> Yes they can be faster if you buy a higher end unit
> but then you won't get the pretty displays unless
> you dedicate a PC to monitor it, but if you
> buy or dedicate a PC, you have what you need
> to do the control too. catch-22
>
> how many outputs do you need ?
> ie: switches on and off
> stepper/servo's
>
> how many inputs?
> ie: end switches
> encoder feedback
>
> break your needs down into the basic application
> and evaluate your choices/options.
>
> Dave
>
>
>
>
> --- In CAD_CAM_EDM_DRO@y..., "Chris Clough" <cclough@x> wrote:
> > Hi guys,
> >
> > I'm trying to get my BPT Series I power drawbar finished up...
need
> to
> > use a PLC, but I have no clue what to do. Is anyone on the list
> familiar
> > with brands and models that could help me out?
> >
> > Thanks,
> > -Chris Clough
>
>
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