Download problems using rs232 cable

[Nutsandbolts]

Hi. Can an expert please help. I brought a USB to RS232 null modem cable from Maplins to fix a problem with my friends receiver. I have been testing the cable out on my PC (Windows XP) to my TM5400 SUPER. I am trying to download latest softcam keys using DARKMAN TM loader 187. I am getting message NO AVAILABLE COM PORT. I have connected USB to my PC and the RS232 to the TM. When i go into DEVICE MANAGER it tells me that the USB - RS232 is COM11. On the TM loader i have selected port 11 but getting same messgage. Is there something else that i can do. Normally for my receiver i just use the USB for downloads and no problems. Regards.

[mikiemo]

Cross wires 2 and 3 (receive and transmit)
Hope this helps

Simple null modem without handshaking

Connector 1 Connector 2 Function
2 3 Rx Tx
3 2 Tx Rx
5 5 Signal ground

you only need 2,3 and 5

[Nutsandbolts]

Hi. Thanks for your reply but the RS232 has 9 pins and if you only need 3 what happens with the other six.?? Also do i need to change anything in the USB ?? Thanks for your help.

[mtv1]

what box i presume ist a 500/600 try ftp client or dcc user is root pass tecnomate correct me if i wrong

[Nutsandbolts]

Hi. Thanks to help fromTHIJS i have managed to get rid of the NO COM PORT AVAILABLE messages. This was done by going into DEVICE MANAGER and changing port number from 16 to 1. I have downloaded TMLOADER 1.8.8 and tried again but i am now getting message 'CONNECT YOUR RECEIVER AND TURN IT ON'. I have turned on my receiver but nothing happens. Any ideas please.

[thijs]

i asume you selected the file that you want to tranfer already
i only used rs232 to rs232 before and when i turned on my tm
the file would start transfering after about 20seconds and you would see a % bar going up to 100 can you tell what model tm it is.
u might need a different loader if it's not a 1000/5000/6000/7000 series model
have a look here too http://www.digital-kaos.co.uk/forums...39/#post147846
or you might need this one

[mikiemo]

I got that message too, untill I crossed 2 and 3

Get a meter,at the rs232 end strip the insulation and find which colour wires are 2 and 3 ,cut them and cross them .I swear it will work

Google rs232 pinouts to find the correct pins.

Regards, Mikie.

[Nutsandbolts]

Hi Mikie. Thanks for that info. My question is why when you buy a brand new null modem cable do you need to mess about with the pins? My concern is that you start cutting wires and you get them wrong it may make it worse. I will look into it and see what i can find. These rs232 are not easy to open. Thanks once again for your info. Regards.

[mikiemo]

There are 5 types of rs 232(null modem) cable, Straight through (thats the one you've got)
Without handshaking
with partial handshaking
with loopback handshaking
with full handshaking
You need to turn your one into one without handshaking.
if you cross 2 and 3 thats what it will be

regards Mikie.


Look here mate , RS232 serial null modem cable wiring and tutorial

[Nutsandbolts]

Hi Mikie thanks again for your help. My cable is a PL2303 USB to RS232 cable which i bought from our friends at Maplins. Have you come across this model?? I will mess about with it tomorrow. With my luck i probably will get the wires mixed up. Regards.

[thijs]

what model tm are you trying to load files too?

[Nutsandbolts]

Hi thijs. I have a TM5400 SUPER. I usually use USB for downloads no problems. I am trying to help a friend out who has a Clarke Tech 2100 receiver and needs an update but does not have USB. Also i was curiuos to know how an RS232 cable works as i have never used one before thats why i am trying it out on my TM5400. My PC does not have an RS232 socket to connect to the CT2100 thats why i bought an USB - RS232 cable. I looked in my TM5400 manual and it gives a layout of the RS232 pin layout but from what i can see does NOT show pins 2 and 3 as being crossed. So now i am a bit more confused. Is there a setting in the TM5400 that i need to check?? Regards.

[thijs]

if you are trying it on the TM 5400 it should start loading on to it no problem once you have selected file and clicked connect al you should have to do then is turn on your tm if the lead is setup right and after a few seconds it should start loading if you use it on the ct you might need a ct loader

[Nutsandbolts]

Hi thijs. I tried it on the CT loader a number of times and still same problem. I have opened up the cable lead cover but i need a soldering iron to release pins 2 and 3 to cross them over. I will buy the iron tomorrow from the market. Having a look inside the cable layout it looks a bit tricky as the pins are close to each other. Are we sure that by crossing pins 2 and 3 it will work?? Regards.

[mikiemo]

Have a look atthis thread mate,I've helped people before

http://www.digital-kaos.co.uk/forums/f75/technomate-no-channels-187551/