Advanced Question: Making up a serial cable from Cat5.

Tesla · 1 Jan 2007 at 22:31

I need a 15m serial cable. I have purchased a 15m length of Cat5 and also 2 serial (RS232) connectors.

Pin out data is here: http://www.aggsoft.com/rs232-pinout-cable/serial-cable-connections.htm

The problem I am facing is that in an RS232 plug there are 9 pins, obviously only 8 cables in Cat5. So, which cable can I get rid of.

The Cat5 pin out seems to suggest that when using Cat 5 you either have RI or DSR.

The cable is to be used with an LG plasma between tuner and panel.

Thanks,

Chris

Tesla · 1 Jan 2007 at 23:36

MikeTimbers said:
As for your cable, you know you can buy RS232-RJ45 ends so that you only need a standard Ethernet cable to join the two convertors? Standard use in data centres.

I did not know this, I imagine it's some proprietary protocol or just varying voltages on varying pins to control actions on the plasma display (it only can perform simple functions such as volume, power etc.) Everything else is controlled via the external tuner box.

Tesla · 2 Jan 2007 at 10:11

Does it need to be wired as X-Over or straight through?

Does 1,6 mean 1 & 6 or 1 OR 6. If so which is preferred, 1 or 6?

Tesla · 4 Jan 2007 at 13:57

Just a thought I had guys, as I am extended the serial cable and not replacing it then surely I should just wire it up as straight through?

(Sorry, should have said I was extending, making a M->F cable)

Tesla · 8 Jan 2007 at 10:59

I had to add a 9th wire making it fully wired in order to get it working

Thanks guys.