RS232 predicament

Hyperterminal?

DNC software uses different parameters for the two machines. A comparison of the two options may help.

We use Tncremont which is a free download from Heidenhain,have a cable made up as their website shows and have no problem downloading/ uploading to all the Tnc controls with an XP laptop.

Used to use it too when we had a TNC370 control, worked well.

I seem to recall we used the same setup on a couple vmc's with 2500 controls too.

Sorry to Bob, it's now been too long and I've forgotten most of the details of that setup. Spoilt these days with HD equipped machines.

Wayne...

If you were close to Oxford, could hang a protocol analyser on the line to see what it's doing ?.

You first need to know the baud rate, so if you have a scope, hang that on the tx line to see how many milliseconds per bit. The do a 1/x to get the baud rate. You may also be able to see whether its 7 or 8 bit transmission from that. Then try various settings for parity, none, even or odd etc and you should be there.

You can use hyperterminal, if you can put up with it, but there's a far better terminal program called Teraterm, free download from:

Have used it for years and its rock solid...

Regards,

Chris

Thanks all. I got to the bottom of the problem in the end, checked parameters on the machine etc. Simple answer was that on the TNC2500, there is a choice of FE, ME or EXT, one would assume one of the first two to be the ones to use especially as the Heidenhain software only has them. Oh no, you use EXT on the machine, and ME on the computer........... Thanks Bob

Out of curiosity and having worked with RS232 many times over the years what do you mean by FE, ME and EXT as it doesn't ring any bells at the moment.

David these are proprietry Heidenhain protocols. The interface is pretty much standard RS232C but the data transfer protocols are far from standard on TNC controls.

Wayne...

Hi I think Wayne gave the answer to this question, its Heidenhain protocols when using file transfers. Coincides with the free DNC thing Heidenhain let you use for said transfers. There are many other DNC programs available. We have a similar problem getting our Fanuc OT to transfer to the computer, just a matter of time, research and trial and error to get readable data to and from computer, so far, gobbledegook.............. watch this space !!! Bob

I have noticed that programs downloaded from the TNC2500 have for some reason apostrophe's in almost every line, example being roughly and from memory : L X=32.00' Y=25.00' also some words are broken, example again being : DWE\LL, These issues are not on the screen on the TNC, only when sent via DNC using TNCServer to pc and then from pc to TNC.

I have looked at various websites that give settings and parameters, but to no real resolution of the issue. Must be something to do with configuration, stop bits or whatever, just very time consuming when doing it by trial and error. So, if anyone has a TNC2500 setup and running, would welcome your pc settings as a starting point to resolve this issue. Bob

Uncheck "simple file sharing" in FolderOptions>View and edit the permissions. jsw