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Long Haul Data Question???? — Parallax Forums

Long Haul Data Question????

ArchiverArchiver Posts: 46,084
edited 2001-04-10 03:08 in General Discussion
The shop I work at has several machines several of which
my boss wants to receive operational data from. My problem
is the distance from machine to the office computer that will
intercept the info. I would like to daisy chain from one machine
to the next. The overall distance may exceed 1000ft. I want to
use the BS2 to keep cost down and use standard cat 5 cable
if that's possible.

What protocol could I use for this???

Any help or ideas appreciated!!

Thanks

K-Jay

Comments

  • ArchiverArchiver Posts: 46,084
    edited 2001-04-09 22:06
    You should think about using RS-485, Jan Axelson's book "Serial Port
    Complete" would be worth a look as well, as it shows how to network in
    RS-485 with stamps. See the Parallax site for links to "Serial Port
    Complete".
    Chris
    Original Message
    From: K-Jay <kimberly.duff@v...>
    To: <basicstamps@yahoogroups.com>
    Sent: Tuesday, April 10, 2001 4:11 AM
    Subject: [noparse][[/noparse]basicstamps] Long Haul Data Question????


    > The shop I work at has several machines several of which
    > my boss wants to receive operational data from. My problem
    > is the distance from machine to the office computer that will
    > intercept the info. I would like to daisy chain from one machine
    > to the next. The overall distance may exceed 1000ft. I want to
    > use the BS2 to keep cost down and use standard cat 5 cable
    > if that's possible.
    >
    > What protocol could I use for this???
    >
    > Any help or ideas appreciated!!
    >
    > Thanks
    >
    > K-Jay
    >
    >
    >
    >
    >
    >
    > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
    >
    >
  • ArchiverArchiver Posts: 46,084
    edited 2001-04-09 23:20
    RS485. In theory it is supposed to work up to 4000 foot.

    May not get this kind of range without shielded cable though.
    Original Message

    > The shop I work at has several machines several of which
    > my boss wants to receive operational data from. My problem
    > is the distance from machine to the office computer that will
    > intercept the info. I would like to daisy chain from one machine
    > to the next. The overall distance may exceed 1000ft. I want to
    > use the BS2 to keep cost down and use standard cat 5 cable
    > if that's possible.
  • ArchiverArchiver Posts: 46,084
    edited 2001-04-09 23:51
    I have used bidirectional in the same cable 0-5 V @ 50 Kbauds with 600'
    of twisted pair (1K terminated) and it is very robust. It is running
    among other cables with variable power 300 VAC @ 2A without any
    problems. For 2 years no one bit was ever lost. You may try a simple
    system before expend time and money implementing a RS485 and cat5.
    ACJacques

    K-Jay wrote:
    >
    > The shop I work at has several machines several of which
    > my boss wants to receive operational data from. My problem
    > is the distance from machine to the office computer that will
    > intercept the info. I would like to daisy chain from one machine
    > to the next. The overall distance may exceed 1000ft. I want to
    > use the BS2 to keep cost down and use standard cat 5 cable
    > if that's possible.
    >
    > What protocol could I use for this???
    >
    > Any help or ideas appreciated!!
    >
    > Thanks
    >
    > K-Jay
    >
    >
    >
    >
    >
    > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
  • ArchiverArchiver Posts: 46,084
    edited 2001-04-10 02:53
    K-jay
    i would suggest 485 protocol. Over 4000 feet capable and addressable. but
    use shielded twisted pair
    Original Message
    From: "K-Jay" <kimberly.duff@v...>
    To: <basicstamps@yahoogroups.com>
    Sent: Monday, April 09, 2001 3:11 PM
    Subject: [noparse][[/noparse]basicstamps] Long Haul Data Question????


    > The shop I work at has several machines several of which
    > my boss wants to receive operational data from. My problem
    > is the distance from machine to the office computer that will
    > intercept the info. I would like to daisy chain from one machine
    > to the next. The overall distance may exceed 1000ft. I want to
    > use the BS2 to keep cost down and use standard cat 5 cable
    > if that's possible.
    >
    > What protocol could I use for this???
    >
    > Any help or ideas appreciated!!
    >
    > Thanks
    >
    > K-Jay
    >
    >
    >
    >
    >
    >
    > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
    >
    >
    >


    Shop online without a credit card
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    RocketCash, a NetZero subsidiary
  • ArchiverArchiver Posts: 46,084
    edited 2001-04-10 03:08
    Our wire of choice was Belden 8760.
    Original Message

    > i would suggest 485 protocol. Over 4000 feet capable and addressable. but
    > use shielded twisted pair
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