1. PLC
- Posted by euman at bellsouth.net
Oct 19, 2001
in the last 14 yrs Ive come to the conclusion that you get what you pay for.
with Allen-Bradley or Cutler-Hammer products I might spend a bit more
but they do last longer and I never have had a bad board or relay right out
of the box. which saves me time to do other things like program in Euphoria....
Later,
Euman
euman at bellsouth.net
2. Re: PLC
On 19 Oct 2001, at 11:19, euman at bellsouth.net wrote:
>
> in the last 14 yrs Ive come to the conclusion that you get what you pay for.
> with Allen-Bradley or Cutler-Hammer products I might spend a bit more but they
> do last longer and I never have had a bad board or relay right out of the box.
> which saves me time to do other things like program in Euphoria....
Where do you get them?
Kat
4. Re: PLC
- Posted by euman at bellsouth.net
Oct 19, 2001
Best bet Kat is to go thru an electrical supply house in your area that
specifically
sell Allen-Bradley and Cutler-Hammer products. The reason for this is they tend
to be cheaper than going straight to AB or CH cause they tend to order quantity
and can achieve a better price from them.
Euman
euman at bellsouth.net
----- Original Message -----
From: "Kat" <gertie at PELL.NET>
To: "EUforum" <EUforum at topica.com>
Sent: Friday, October 19, 2001 13:01
Subject: Re: PLC
>
> On 19 Oct 2001, at 11:19, euman at bellsouth.net wrote:
>
> >
> > in the last 14 yrs Ive come to the conclusion that you get what you pay for.
> > with Allen-Bradley or Cutler-Hammer products I might spend a bit more but
> > they
> > do last longer and I never have had a bad board or relay right out of the
> > box.
> > which saves me time to do other things like program in Euphoria....
>
> Where do you get them?
>
> Kat
>
>
>
5. Re: PLC
On 19 Oct 2001, at 14:23, euman at bellsouth.net wrote:
>
> Best bet Kat is to go thru an electrical supply house in your area that
> specifically sell Allen-Bradley and Cutler-Hammer products. The reason for
> this
> is they tend to be cheaper than going straight to AB or CH cause they tend to
> order quantity and can achieve a better price from them.
This is Alabama, there is no way i will goto an electrical suppy house in my
area! If i can't get it online, i drive to another county to get it, or farther,
out to
60 miles, and i can't get a yellow pages out of this area, the phone company
wants $100+ for the special order phone books. Really, seriously, i truck in
tons of building materials every month from an hr away, even with 3 local
building supply places. I don't buy *anything* locally if i can possibly avoid
it.
Many reasons why. So i was hoping you'd be more helpful with online items.
On 19 Oct 2001, at 13:21, Evan Marshall wrote:
>
> You might also try PLC Direct at http://www.automationdirect.com.
> Their prices are listed on the site.
The smallest one they have at
http://www.automationdirect.com/store/plc/dl05.html is $99, plus $99 for the
software, plus misc items like shipping, cables, plugs, and necessary
options... are you sure this is worth more than the $45 Stamps? I don't need
these things to be prepackaged in an enclosure, after all, and speed isn't so
important now, but power draw is.
Kat
6. Re: PLC
What the heck are you guys 'n' gals talkin' about?!
----- Original Message -----
From: "Kat" <gertie at PELL.NET>
To: "EUforum" <EUforum at topica.com>
Subject: Re: PLC
>
> On 19 Oct 2001, at 14:23, euman at bellsouth.net wrote:
>
> >
> > Best bet Kat is to go thru an electrical supply house in your area that
> > specifically sell Allen-Bradley and Cutler-Hammer products. The reason
for this
> > is they tend to be cheaper than going straight to AB or CH cause they
tend to
> > order quantity and can achieve a better price from them.
>
> This is Alabama, there is no way i will goto an electrical suppy house in
my
> area! If i can't get it online, i drive to another county to get it, or
farther, out to
> 60 miles, and i can't get a yellow pages out of this area, the phone
company
> wants $100+ for the special order phone books. Really, seriously, i truck
in
> tons of building materials every month from an hr away, even with 3 local
> building supply places. I don't buy *anything* locally if i can possibly
avoid it.
> Many reasons why. So i was hoping you'd be more helpful with online items.
>
> On 19 Oct 2001, at 13:21, Evan Marshall wrote:
>
> >
> > You might also try PLC Direct at http://www.automationdirect.com.
> > Their prices are listed on the site.
>
> The smallest one they have at
> http://www.automationdirect.com/store/plc/dl05.html is $99, plus $99 for
the
> software, plus misc items like shipping, cables, plugs, and necessary
> options... are you sure this is worth more than the $45 Stamps? I don't
need
> these things to be prepackaged in an enclosure, after all, and speed isn't
so
> important now, but power draw is.
>
> Kat
>
>
7. Re: PLC
- Posted by euman at bellsouth.net
Oct 19, 2001
> > The smallest one they have at
> > http://www.automationdirect.com/store/plc/dl05.html is $99, plus $99 for
> the
> > software, plus misc items like shipping, cables, plugs, and necessary
> > options... are you sure this is worth more than the $45 Stamps? I don't
> need
> > these things to be prepackaged in an enclosure, after all, and speed isn't
> so
> > important now, but power draw is.
> >
> > Kat
uh, I could almost do more with one 8 pin ice cube relay than this thing can
do....
it only has Eight Inputs and six outputs. the PID loops and interface
connectivity
are the only saveing feature. it might make a nice feature to a childs train set
though, hehe.
8. Re: PLC
On 19 Oct 2001, at 15:16, C. K. Lester wrote:
>
> What the heck are you guys 'n' gals talkin' about?!
PLC = Programmable Logic Controller ( or Device) - generally a 8bit cpu with
an eeprom and some ram (sometimes inside the cpu, like the
8035..8049etc), with minimal interface on a small (2x3inch) printed circuit
board. You supply raw power (generally 6..12vdc), some programming via a
serial or parallel port off the desktop or laptop computer, and it does things.
They are used for embedded devices in equipment, from smart thermostats,
programmable conveyor systems, environment controllers, sun trackers,
data logging, small systems monitoring, ATM machine operation, light
sequencers, Star Trek communicators and scanners, etc.. Cost anywhere
from $25 to $250, capable of various jobs. I like the looks of the
http://www.parallaxinc.com Stamps most of all, and they are smallest, use
the least power, cost the least, program in basic, and can do as much as
any other plc,,, problem is, there is no email support and the installer is very
misbehaved so i won't run their software untill i know someone else who has.
With the port monitor ? wrote in Eu, it should be easy to reverse engineer the
programming software, and make the stamp programmable in Eu.
Kat
> ----- Original Message -----
> From: "Kat" <gertie at PELL.NET>
> To: "EUforum" <EUforum at topica.com>
> Sent: Friday, October 19, 2001 2:21 PM
> Subject: Re: PLC
>
>
> > On 19 Oct 2001, at 14:23, euman at bellsouth.net wrote:
> >
> > >
> > > Best bet Kat is to go thru an electrical supply house in your area that
> > > specifically sell Allen-Bradley and Cutler-Hammer products. The reason
> for this
> > > is they tend to be cheaper than going straight to AB or CH cause they
> tend to
> > > order quantity and can achieve a better price from them.
> >
> > This is Alabama, there is no way i will goto an electrical suppy house in
> my
> > area! If i can't get it online, i drive to another county to get it, or
> farther, out to
> > 60 miles, and i can't get a yellow pages out of this area, the phone
> company
> > wants $100+ for the special order phone books. Really, seriously, i truck
> in
> > tons of building materials every month from an hr away, even with 3 local
> > building supply places. I don't buy *anything* locally if i can possibly
> avoid it.
> > Many reasons why. So i was hoping you'd be more helpful with online items.
> >
> > On 19 Oct 2001, at 13:21, Evan Marshall wrote:
> >
> > >
> > > You might also try PLC Direct at http://www.automationdirect.com.
> > > Their prices are listed on the site.
> >
> > The smallest one they have at
> > http://www.automationdirect.com/store/plc/dl05.html is $99, plus $99 for
> the
> > software, plus misc items like shipping, cables, plugs, and necessary
> > options... are you sure this is worth more than the $45 Stamps? I don't
> need
> > these things to be prepackaged in an enclosure, after all, and speed isn't
> so
> > important now, but power draw is.
> >
> > Kat
> >
> >
>
>
9. Re: PLC
- Posted by euman at bellsouth.net
Oct 19, 2001
try http://www.electrobase.com/
Euman
euman at bellsouth.net
> KAT
> This is Alabama, there is no way i will goto an electrical suppy house in my
> area! If i can't get it online, i drive to another county to get it, or
> farther, out to
> 60 miles, and i can't get a yellow pages out of this area, the phone company
> wants $100+ for the special order phone books. Really, seriously, i truck in
> tons of building materials every month from an hr away, even with 3 local
> building supply places. I don't buy *anything* locally if i can possibly avoid
> it.
> Many reasons why. So i was hoping you'd be more helpful with online items.
10. Re: PLC
- Posted by euman at bellsouth.net
Oct 19, 2001
Kat I just spent $7,800 on a PLC not that long ago. Glad it wasnt my money I had
to spend...
Multi-processor, self contained battery backup, fully plugable and extendable
"The Works"
So they can get alittle outlandish especially when safety is of the utmost
importance.
Euman
euman at bellsouth.net
> PLC = Programmable Logic Controller ( or Device) - generally a 8bit cpu with
> an eeprom and some ram (sometimes inside the cpu, like the
> 8035..8049etc), with minimal interface on a small (2x3inch) printed circuit
> board. You supply raw power (generally 6..12vdc), some programming via a
> serial or parallel port off the desktop or laptop computer, and it does
> things.
> They are used for embedded devices in equipment, from smart thermostats,
> programmable conveyor systems, environment controllers, sun trackers,
> data logging, small systems monitoring, ATM machine operation, light
> sequencers, Star Trek communicators and scanners, etc.. Cost anywhere
> from $25 to $250, capable of various jobs. I like the looks of the
> http://www.parallaxinc.com Stamps most of all, and they are smallest, use
> the least power, cost the least, program in basic, and can do as much as
> any other plc,,, problem is, there is no email support and the installer is
> very
> misbehaved so i won't run their software untill i know someone else who has.
> With the port monitor ? wrote in Eu, it should be easy to reverse engineer the
>
> programming software, and make the stamp programmable in Eu.
>
> Kat
11. Re: PLC
On 19 Oct 2001, at 16:04, euman at bellsouth.net wrote:
>
> try http://www.electrobase.com/
Didn't help.
I called Parallax, talked to the tech support. He said they don't give out how
the stamp is programmed, but they intend to release the C source to their
editor soon, which programs the stamps. Funny thing, when i tried to
download the pdf of the editor's documentation, I kept getting windose error
msgs saying everything performed an error and will be shut down. I hope
their hardware is better than their software.
Kat
12. Re: PLC
Have you looked into the PIC microcontroller? It is what the BASIC Stamp is
built on.
You need a special programmer and it is programmed in assembly. The programmer
can be built easily ( there are many sites on the net with plans and commercial
programmers)
and the assembly language uses a small set of instructions (again there are a
lot of places
to look for help in programming them).
Try http://www.digi-key.com for parts.
Maybe a good Euphoria project would be to write a translator for PIC
programming?
10/19/01 8:39:20 PM, Kat <gertie at PELL.NET> wrote:
>
>On 19 Oct 2001, at 16:04, euman at bellsouth.net wrote:
>
>>
>> try http://www.electrobase.com/
>
>Didn't help.
>
>I called Parallax, talked to the tech support. He said they don't give out how
>the stamp is programmed, but they intend to release the C source to their
>editor soon, which programs the stamps. Funny thing, when i tried to
>download the pdf of the editor's documentation, I kept getting windose error
>msgs saying everything performed an error and will be shut down. I hope
>their hardware is better than their software.
>
>Kat
>
>
>
13. Re: PLC
- Posted by ramarin at TELEPORT.COM
Oct 19, 2001
Kat,
Hope I'm not intruding -- as I see it the only reason to use a Stamp is for
rapid
turn of small control function applications where execution speed is not an
issue
by those folks who aren't necessarily skilled at programming micros.
As a mid-range recommendation: for maximum flexibility per buck get a PICStart
programmer and one of the several (less expensive) HLL compliers for the PIC
parts.
BTW: Atmel's version of the 8051 flash parts are also easy to code/implement,
plus, the programmers are dirt cheap and freely available on the net.
Sorry to hear of your Parallax troubles -- they used to source such great
stuff. :(
-Roger
Kat wrote:
>
>
> On 19 Oct 2001, at 16:04, euman at bellsouth.net wrote:
>
> >
> > try http://www.electrobase.com/
>
> Didn't help.
>
> I called Parallax, talked to the tech support. He said they don't give out how
> the stamp is programmed, but they intend to release the C source to their
> editor soon, which programs the stamps. Funny thing, when i tried to
> download the pdf of the editor's documentation, I kept getting windose error
> msgs saying everything performed an error and will be shut down. I hope
> their hardware is better than their software.
>
> Kat
