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Thread: Diagram of RJ45 to DB25 wiring connection

  1. #1
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    Default Diagram of RJ45 to DB25 wiring connection

    Can anyone show me , or tell me , where can I find a diagram of which pins/wires on the RJ45 go to which ones on the DB25 ?
    ( in ohter words , if you were to cut off one end on a DB 25 and do the same on a RJ45 ( cat5 ) , which wires connect to which ?

    Thanks

    Oh ...
    And while I'm at it ... where can a fellow also find out for the output from the RJ45 connections , which wires connect to the SSR's

  2. #2
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    TERBObob,

    This came directly from the directions Macrosill sent out with one of the 595 coop's.
    There are pics of the connectors and their pinouts
    in the wiki.

    "There are 4 pins in the parallel port you need to locate. They are pins 1, 2, 14 and any one of pins 18-25. Pin 1 from the parallel port must be connected to pin 5 of the “IN” RJ45 connector. Pin 2 of the parallel port must be connected to pin 8 of the “IN” RJ45 connector. Pin 14 of the parallel port must be connected to pin 7 of the “IN” RJ45 connector. Finally any one of pins 18-25 must be connected to pin 2 of the “IN” RJ45 connector. The above listed connections can be made through a custom cable or the utilization of a DB25 - RJ45 adapter with the appropriate terminations along with a standard network cable"

    Jack

  3. #3
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    I recommend this page in the wiki at least once a week.You are the lucky recipient this week.

    http://doityourselfchristmas.com/wik...ign_Guidelines

    And here is another great reference to follow...

    http://doityourselfchristmas.com/wik...?title=Pinouts
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  4. #4
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    Please be patient with me , but when I went to the wiki and found the pinouts , this is what it said , which shows using 5 pins for the Rj45 input on the 595 boards ...

    595 Style Controllers: Inputs

    595/Grinch Controller RJ45 inputs (and daisy-chain outputs) should be pinned as follows:
    Pin 1 - Power (optional)
    Pin 2 - no connection
    Pin 3 - Ground
    Pin 4 - no connection
    Pin 5 - Clock
    Pin 6 - no connection
    Pin 7 - Data Latch
    Pin 8 - Serial Data In/Out

  5. #5
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    TerboBob

    Here is the pinout I used on one of the DB25 to RJ 45 connectors

    RJ45 Side DB25 LPT1 Side
    1-Orange White -- + 5V
    2 Orange -
    3- White Green -----> Pin 18 Ground
    4- Blue
    5- White Blue --- Pin 1
    6- Green
    7- White Brown --- Pin 14
    8- Brown ------ Pin 2


    Or Standard pinout

    RJ 45 Pin 1 to 5 Volt power
    RJ 45 Pin 2 n/c
    RJ 45 Pin 3 Gnd (DB Pins 18 -25)
    RJ 45 Pin 4 n/c
    RJ 45 Pin 5 to DB Pin 1
    RJ 45 Pin 6 n/c
    RJ 45 Pin 7 DB Pin 14
    RJ 45 Pin 8 DB Pin 2


    Jim

  6. #6
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    First , let me thank you for being patient with me .
    Now , I have to say , this is getting confusing .
    I am gonna post a pic of the actual PCB ( 595 ) I just purchased and would GREATLY appreciate any help .
    1) need to know the pinouts for the RJ45 to DB25
    2) need to know which pin is for the power supply ( 5 volts regulated )

    I honestly hate a ka-zillion questions , and I DO appreciate any and all help that I am receiving .

    http://www.doityourselfchristmas.com...enc_x2_273.jpg

    Thanks again ...

  7. #7
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    check your PMs
    If you are not a supporting member please consider Becoming an Active Member

  8. #8
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    Default Re: Diagram of RJ45 to DB25 wiring connection

    Here is WIRING of DB25 to RJ 45

    PIN 1 color Orange White to + 5V
    2 Orange -
    3- White Green --to --> Pin 18 Ground
    4- Blue
    5- White Blue --to-> Pin 1
    6- Green
    7- White Brown --to --> Pin 14
    8- Brown ---to---> Pin 2
    for mor rj45 diagram

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