Log in
Register
Menu
Log in
Register
Home
What's new
Latest activity
Authors
Forums
New posts
Search forums
What's new
New posts
Latest activity
Members
Current visitors
New posts
Search forums
Menu
Log in
Register
Install the app
Install
Forums
Miscellaneous Sections
Tech Head - The Technology Section
The Work Bench and Soldering Station
help to build a "NULL MODEM" Cable !!!
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="PaulR" data-source="post: 79985" data-attributes="member: 176256"><p>Right, here's what I think...</p><p></p><p>The cable you have there looks to me as though it's a Laplink type cable. The female 25 pin ends are for connecting the parallel ports on two computers together so that you can transfer files.</p><p></p><p>You can also do this via the serial port and this is what the two male 9 pin ends are for. You CANNOT use a parallel port at one end and a serial port at the other as they use different protocols and wiring formats. There's even a possibilty of bunging 12 volts up the wrong pin and damaging something.</p><p></p><p>All is not dark though. You will probably find that the 9 pin to 9 pin portion is a null modem cable. So connect one end to your computer and the other end to the receiver and, providing you have obtained the right software, you should be able to control whatever you want - or at least permitted to do.</p><p></p><p>A historical note. There is/was a serial port which used 25 pins but, in order to identify it compared to the parallel port, it had the same reversed pattern as the 9 pin port. If you happen to have one of these then you will need to buy a 9 - 25 pin converter. I have, somwhere, 6 headed lead with 25 pin parallel, 25 pin serial and 9 pin serial plugs at each end which I used to use for Laplink.</p><p></p><p>Good luck</p><p></p><p>PaulR</p></blockquote><p></p>
[QUOTE="PaulR, post: 79985, member: 176256"] Right, here's what I think... The cable you have there looks to me as though it's a Laplink type cable. The female 25 pin ends are for connecting the parallel ports on two computers together so that you can transfer files. You can also do this via the serial port and this is what the two male 9 pin ends are for. You CANNOT use a parallel port at one end and a serial port at the other as they use different protocols and wiring formats. There's even a possibilty of bunging 12 volts up the wrong pin and damaging something. All is not dark though. You will probably find that the 9 pin to 9 pin portion is a null modem cable. So connect one end to your computer and the other end to the receiver and, providing you have obtained the right software, you should be able to control whatever you want - or at least permitted to do. A historical note. There is/was a serial port which used 25 pins but, in order to identify it compared to the parallel port, it had the same reversed pattern as the 9 pin port. If you happen to have one of these then you will need to buy a 9 - 25 pin converter. I have, somwhere, 6 headed lead with 25 pin parallel, 25 pin serial and 9 pin serial plugs at each end which I used to use for Laplink. Good luck PaulR [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Miscellaneous Sections
Tech Head - The Technology Section
The Work Bench and Soldering Station
help to build a "NULL MODEM" Cable !!!
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
Accept
Learn more…
Top