What probably Don means is 82C54-like functionality. And he's right,
that's what I miss most in this card ( besides the capability of using
TS-DIO64, of course ). Is it still possible to add such capability?
--- In "Don W. Carr" <> wrote:
>
> Sorry I have not answered, I have been at a conference on
entrepreneurship
> in Mexico City.
>
> The timers I would like are for counting edges on external signals
(watching
> DIO pin), which I think you referred to as frequency counters. I use
them in
> conjunction with the internal free running counters to calculate a
> frequency (speed) every second based on input from an encoder. The
internal
> free running counter tells me the exact time between counter
readings. We
> could get by with 2 external edge counters (no extra XDIO
functionality),
> and 4 total serial ports,(1 RS-485 and 3 RS-232), but would like to
keep the
> SD card to record history.
>
> Well, for now, we will likely stick with the TS-7300 which has all
of this
> out of the box, since that is already a very good price compared to
other
> options, and space is not a huge deal, though smaller and more
rugged would
> be much better. I looked at the small extruded aluminum case with
room for
> signal conditioning, and that looked great.
>
> At some point, I will make an RTU with the TS-7400 though. Having say 12
> DIO, 4 AI, 1 RS485, 2 RS232, 2 external edge counters, 2 Gig data
logging,
> etc, would make for a killer little basic RTU or just remote I/O
connected
> to a network. Of course would have built in serial server, mod-bus
bridge,
> etc. We might put it in a small extruded aluminum case with signal
> conditioning on a dauthter board and military style quick
connector(s) to
> connect to terminal strips or directly to the system if wired with a
> compatible connector. I have all of the software for an RTU (GPL),
that is
> arround v0.1 quality and is currently being used to control an
instrument
> and record / analyze data. I will put it on source forge when I can
resolve
> the legal issues with the University.
>
> Sorry I could not stop longer when I was in Phoenix, but we had to meet
> people for lunch and then depart for Guadalajara. We might be back
through
> this winter though and I could stop by. I will definitely be getting
a 7400
> for my personal use along with the extruded aluminum case. It would
be nice
> if you guys sold a daughter board that could be used for making up
> prototypes (or even end products for onsey twosey type things).
>
> Well, if you can do it without a lot of work, let us know what
combination
> of uarts and external edge counters you could fit in the little core
> available, and still keep the SD option. We understand the board
just came
> out and you can not do everything at once.
>
> Don.
>
>
>
> On 9/10/06, Jesse Off < > wrote:
> >
> > --- In <ts-7000%40yahoogroups.com>, "Don W.
> > Carr" <doncarr@> wrote:
> > >
> > > For me, the best thing you could add is two high speed counters,
> > and extra
> > > serial ports. I have a project that needs 5 serial ports, 2 high
> > speed
> > > counters, and some DIO, and this little board would be perfect if
> > we could
> > > do that. By the way, we really like the way you count transitions
> > instead of
> > > cycles since that cuts the error for frequency calculations in
> > half! We
> > > would even be willing to pay for the mods.
> >
> > Could you elaborate on the high speed counters? Do you mean a free-
> > running register in memory space counting upwards or a frequency
> > counter watching a DIO pin?
> >
> > With a custom FPGA, we can strip down features you tell us you don't
> > need and make some more room for things you do. I'm not sure I can
> > fit 3 extra UARTs, SD card core, NAND controller core, boilerplate
> > glue logic and frequency counters all in a 570 LUT CPLD/FPGA, but if
> > you're willing to give up SD and boot to NAND flash it would be no
> > problem.
> >
> >
> > >
> > > I like the XDIO, but I think it would be better if you could still
> > use the
> > > other DIO when the counters are used, and also you need a longer
> > register
> > > for the PWM high/low times so we can hit all frequencies +/-0.05%
> > duty
> > > cycle.
> >
> > By counters do you mean the little "trick" you can do to loopback PWM
> > to the pulse-counter for an arbitrary freq free-running counter?
> > This indeed will tie up the PWM pin and feature and the pulse timer
> > feature, but other GPIO's and features should still be useable.
> >
> >
> > >
> > > When will you have a case? We would like room for a signal
> > conditioning
> > > board in the case like you have with your other cases.
> >
> > This board is a standard size that fits into some very inexpensive
> > off-the-shelf extruded aluminum cases. We only have to do custom
> > metal and screening work on the endplates and they should be here
> > this week. I'm not sure theres room in the smallest case we're
> > supporting for a "daughterboard" with a mating 40 pin female
> > connector. What would work though would be to just solder your board
> > to the .1" headers directly. This would get you an extremely rugged
> > device with a very low stack height.
> >
> > We used the .1" headers partially for the reason that they would be
> > easy to solder a daughterboard directly to. We were thinking about
> > doing an edge connector like a SIMM socket or a high density hirose
> > style connector, but came to the conclusion that would just be
> > idiotic for targetting ruggedness. Edge connectors are mechanically
> > weak and unwieldy (there was a reason PC/104 went the way it did
> > rather than stay with the PC card-edge slots). Those high-density
> > connectors aren't much better and some were only rated for 50 mate
> > cycles! Granted they'd likely only be mated once, but that just
> > doesn't sound like a reliable connector to me, so instead we put
> > the .1" pin header on and tons of mounting holes.
> >
> > We really like these extruded aluminum enclosures. An advantage
> > besides being inexpensive is that they are extremely strong-- you
> > could probably run one of these things over with a truck without it
> > collapsing! We will definitely be testing that once they come in.
> >
> > P.S.
> > Our production workers say you stopped by our office a month or so
> > ago to pick up some boards-- wish you would have dropped by in Bob's
> > or my office before you left, as we would have liked to have met you!
> >
> > //Jesse Off
> >
> >
> >
>
>
>
> --
> Dr. Don W. Carr
> J. G. Montenegro 2258
> Guadalajara, Mexico
> +52-333-630-0704
> +52-333-836-4500 ext 2930
>
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