I have come into possesion of a TEP CNC engraver that I think I can use for PCBS. Problem is that I cannot find the software it is supposed to work with or any information about it. Googling it brought me to this site where there is one thread from a while ago with dead links in.

The correct software is TechCAD but it does seem pretty rubbish from what I have read and I would prefer to get it going with EMC2 or Mach3 but I have no information about the protocol needed over the serial port connection. The original seller "http://www.rev-ed.co.uk/detail.asp?prodname=TechCAD&quick=1" was typically British when it comes to helpful replies "Sorry, this product was discontinued several years back" was all they could do to help me.

The machine has an RS232 connection presumably for data input but I have no information about the protocol, there is a PIC in the machine that receives the RS232 so I could disassemble it if nothing else came to light or I could simply throw the electronics away and fit a parallel port control system but that would be a shame as this is all working and in very good order.

I am looking for any documentation, the TechCAd software that was free originally with the machine, operators manual maybe, basically just anything that will get me going with something more than left right forward backward, up down that I have at the moment with the panel button.