Serial Cable

[Tyler]

This is not really general programming.. which makes me think we probably need a general harware section. Now onto my questin.

Are all female-female serial cables usable for null modems (they have there send ready connected to there recieve ready). What is an easy way to find out if they are if not and is it possible to use any female-female serial cable in a null modem setup?

[AJ]

Hi,

Are all female-female serial cables usable for null modems (they have there send ready connected to there recieve ready). What is an easy way to find out...

No, not all female serial cables are useable as null modems. You will normally need to either purchase a specific null modem cable, use an in-line null modem or wire your own.

The way I have always found out in the past is by using a uC development board I have. You could achieve a similar effect by just using a battery and LED.

I guess one way to do it is just to attempt connecting the cable between two PC's and seeing if it works (of course - you need to know your serial driver is in a good state!) although I haven't tried this before so do it at your own risk!

Cheers,
Adam

[Tyler]

In the case where all pins are attached is it possile to simply assert the pins from computer to computer and create the same interface?

[Solar]

This page shows null-modem layouts.