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General => General => Topic started by: Bluecray on 03 January 2013, 08:55:48 pm

Title: Sorry not a bike question - RS232 lead
Post by: Bluecray on 03 January 2013, 08:55:48 pm: Quick question I'm making up a unique 9 pin to RS232 25 pin lead for our laptop - CNC lathe /mill at work.

For a 25 pin RS232 to 25 pin RS232 moulded lead how is it wired up? Are all 25 pins wired as 1 to 1, 2 to 2, 3 to 3 etc???

Thanks
Title: Re: Sorry not a bike question - RS232 lead
Post by: wfbroddy on 03 January 2013, 09:39:27 pm: Quote from: Bluecray on 03 January 2013, 08:55:48 pm
Are all 25 pins wired as 1 to 1, 2 to 2, 3 to 3 etc???

Thanks

It depends on the application the cable is needed for. this site may help >>HERE (http://pinouts.ru/connector/25_pin_D-SUB_male_connector.shtml)<<
Title: Re: Sorry not a bike question - RS232 lead
Post by: snapper on 03 January 2013, 09:47:50 pm: no idea but i have a box of 9 pin rs232 leads no idea how there wired either :lol
by box i mean a couple of hundred
Title: Re: Sorry not a bike question - RS232 lead
Post by: BBROWN1664 on 03 January 2013, 10:34:55 pm: It really depends on the use but the standard RS-232 is the one in this link
http://www.lammertbies.nl/comm/cable/RS-232.html#pins (http://www.lammertbies.nl/comm/cable/RS-232.html#pins)

on a 25 . 25 cable there are a few pairs that cross over. The diagrams in the link above will show you the 9-25 pin version.

This may be an easier option though.
http://www.maplin.co.uk/serial-null-modem-25-pin-female-to-9-pin-female-97784 (http://www.maplin.co.uk/serial-null-modem-25-pin-female-to-9-pin-female-97784)
Title: Re: Sorry not a bike question - RS232 lead
Post by: Bluecray on 04 January 2013, 05:16:16 pm: Thanks for help guys bbrown166 the lead from maplins is wired as your link i.e 1 to 1, 2 to 2, 3 to 3 etc but 18, 11, and 25 are also wired your link showed them not wired.

I've brought a 9 pin to 25 pin and also a 25 pin to 25 pin cutting both leads in half and wiring up my own unique lead 9 pin to 25 pin for laptop to CNC machine, it's be MUCH easier than trying to solder the leads to the 9 pin and 25 pin, the moulded plugs should last a while being plugged and unplugged all day.
Title: Re: Sorry not a bike question - RS232 lead
Post by: Grahamm on 05 January 2013, 02:09:11 am: Google for an rs232 breakout connector, that lets you connect different pins together in whatever order you want.