TWS Interface(& DS275)

Archiver

Hi,

1. If connecting the RWS-434 to the DS275 for reading the incoming
data with hyperterminal: what are the exact connections between the
DS275 and RWS-434? Do the unused pins(most) have to be grounded? Any
simple schematics around?

2. Is there any specific way the data should be sent from the
transmitting end so that hyperterminal will read the data? Or will it
read it if I just send the variable(just a number)?

3. With this wireless stuff, there is no need to worry about cutting
the ATN line from the transmitting STAMP, correct?

Thanks,
Corey.


--- In basicstamps@y..., sargent@s... wrote:
> I've not been following this thread too closely, but would like to
throw in
> that I also have had great results with the DS275.
>
> = Steve
>
>
>
>
> At 10:54 PM 03/27/2001 -0500, you wrote:
> >Rodent wrote:
> >>
> >> If you need true PC variety RS232, you have to use a line driver.
For TTL
> >> level you should not.
> >
> >I guess this is where my confusion is, the definition of 'true PC
> >variety RS232'. I've tried on 4 different PC, all where able to
> >directly read from the stamp, no line driver (all at short, < 4' cable
> >lengths). And assuming a short cable run is fine for a given
> >applicaiton so direct stamp->PC sems to work, what about PC->stamp. Do
> >you know of any badness from using the PC->22Kresistor->stamp method?
> >
> >>
> >> FYI -- we used Max232's on some equipment where we used to work
and got
> >> 500'+ distance at 300 baud. the new stuff used Max495's and we
were able to
> >> go 1500'+ at 9600 baud.
> >
> >OK, this sounds like a good example of greater cable length needing
> >higher voltages.
> >
> >Thanks,
> >
> >Kevin
> >
> >
> >
> >Your use of Yahoo! Groups is subject to
http://docs.yahoo.com/info/terms/
> >
> >

Archiver

Corey,

If you haven't yet, download the datasheet for the DS275 from the following
address

http://www.dalsemi.com/datasheets/pdfindex.html

It has good examples on hook up

Steve





At 12:25 PM 03/28/2001 -0000, you wrote:
>Hi,
>
>1. If connecting the RWS-434 to the DS275 for reading the incoming
>data with hyperterminal: what are the exact connections between the
>DS275 and RWS-434? Do the unused pins(most) have to be grounded? Any
>simple schematics around?
>
>2. Is there any specific way the data should be sent from the
>transmitting end so that hyperterminal will read the data? Or will it
>read it if I just send the variable(just a number)?
>
>3. With this wireless stuff, there is no need to worry about cutting
>the ATN line from the transmitting STAMP, correct?
>
>Thanks,
>Corey.
>
>
>--- In basicstamps@y..., sargent@s... wrote:
>> I've not been following this thread too closely, but would like to
>throw in
>> that I also have had great results with the DS275.
>>
>> = Steve
>>
>>
>>
>>
>> At 10:54 PM 03/27/2001 -0500, you wrote:
>> >Rodent wrote:
>> >>
>> >> If you need true PC variety RS232, you have to use a line driver.
>For TTL
>> >> level you should not.
>> >
>> >I guess this is where my confusion is, the definition of 'true PC
>> >variety RS232'. I've tried on 4 different PC, all where able to
>> >directly read from the stamp, no line driver (all at short, < 4' cable
>> >lengths). And assuming a short cable run is fine for a given
>> >applicaiton so direct stamp->PC sems to work, what about PC->stamp. Do
>> >you know of any badness from using the PC->22Kresistor->stamp method?
>> >
>> >>
>> >> FYI -- we used Max232's on some equipment where we used to work
>and got
>> >> 500'+ distance at 300 baud. the new stuff used Max495's and we
>were able to
>> >> go 1500'+ at 9600 baud.
>> >
>> >OK, this sounds like a good example of greater cable length needing
>> >higher voltages.
>> >
>> >Thanks,
>> >
>> >Kevin
>> >
>> >
>> >
>> >Your use of Yahoo! Groups is subject to
>http://docs.yahoo.com/info/terms/
>> >
>> >
>
>
>
>
>Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>