Author Topic: D25 Parallel port pinout?  (Read 440 times)

0 Members and 1 Guest are viewing this topic.

Offline Jackster

  • Regular Contributor
  • *
  • Posts: 130
D25 Parallel port pinout?
« on: August 30, 2018, 05:13:08 pm »
Am I right in saying that this D25 to D25 has pin 1 through 13 and 14 through 25 reversed on one end?
As in pin 1 goes to pin 13, pin 5 goes to 9, pin 15 goes to 24 and pin 20 goes to pin 19?

Is this a standard parallel connection?

 

Offline helius

  • Super Contributor
  • ***
  • Posts: 2859
  • Country: us
Re: D25 Parallel port pinout?
« Reply #1 on: August 30, 2018, 05:33:09 pm »
No. By looking at the back of the shell you cannot see the gender of the connectors, nor the pin numbering. If one connector is male and the other female, it is a straight-through cable (1-1, 2-2, ... 25-25).
 

Offline boffin

  • Supporter
  • ****
  • Posts: 901
  • Country: ca
Re: D25 Parallel port pinout?
« Reply #2 on: August 30, 2018, 05:48:16 pm »
Somebody already beat me to it, but what you're probably looking at is a plug and a socket, if you plug them together you'll see they all go straight through

The standard Parallel printer port interface is
DB25         Centronics (57-30360 plug)
1              1    Strobe
2-9           2-9  Data0 -> Data7
10            10   ACK
11            11   Busy
12            12   Paper Out
13            13   Select In
14            14   Autofeed
15            32   Error
16            31   Reset
17            36   Select
18-25       19-26 (Grounds)

(oh dear god, I just did the pin-pin mapping off the top of my head - some useless knowledge buried in there.  I double checked it, but it was right)
 
The following users thanked this post: SeanB

Offline Jackster

  • Regular Contributor
  • *
  • Posts: 130
Re: D25 Parallel port pinout?
« Reply #3 on: August 30, 2018, 06:15:46 pm »

Yep male and female. The photos I was sent showed 2 male ends  |O
 

Offline In Vacuo Veritas

  • Frequent Contributor
  • **
  • Banned!
  • Posts: 319
  • Country: ca
  • I like vacuum tubes. Electrons exist, holes don't.
Re: D25 Parallel port pinout?
« Reply #4 on: August 30, 2018, 06:25:51 pm »
No. By looking at the back of the shell you cannot see the gender of the connectors, nor the pin numbering. If one connector is male and the other female, it is a straight-through cable (1-1, 2-2, ... 25-25).

Uh, of course you can. The one with the embossings is the outer hood, this is the male part.

https://buildyourcnc.com/Item/electronicsandmotors-connector-male-dsub-DB25-ribbon
 


Share me

Digg  Facebook  SlashDot  Delicious  Technorati  Twitter  Google  Yahoo
Smf