EEVblog Electronics Community Forum
Electronics => Beginners => Topic started by: Jackster 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?
(https://s15.postimg.cc/qkmcl5ajf/12ea61bb-b829-4704-a795-5a6332631aba.jpg) (https://postimg.cc/image/5nq4ghcif/)
-
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).
-
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)
-
Yep male and female. The photos I was sent showed 2 male ends |O
-
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