I have very limited experience on Dover ( mostly DMC ) but have spoken to a few people in our company who say HyperTerminal does fine providing you have a list of commands etc... Which they do and can share . My big concern was the ability to conduct safety tests . I think the first thing is to see if I can get HyperTerminal or an equivalent ( I have been told there is a freeware programme called putty that does the same as HyperTerminal but works with later versions of windows) if I does then that should be enough for now . The world software does seem to have a more user friendly interface and if it came with a suite for all Dover controllers I would still consider it but I believe you can only buy in modules , 3500 for T-III and T-IV and a further 4000 for DMC . That's hard for me to justify for a handful of units when there is an alternative for the cost of a serial cable albeit more limited .
Thanks for the advice guys .