To get some better help, you should include some details. Like is it controlled by another app?? Is controled by serial port?? Is it network (ip based) controlled?
Some other helpful hints (from when I researched IXO/TAP protocol to write an app several years ago):
Check the manufacture's web site for an API or perl module. Call the manufacturer, engineers (SW and HW) are generally very helpful people.
Google, PM Super Search, and search CPAN
If these produce nothing you will most likely have to find a working app and reverse engineer the protocol used to communicate with it. Lucky for me I found IXO/TAP was a very simple protocol, if I had to reverse engineer it (but I did not, altavista turned up many resources)
some perl modules you might find helpful:
Astro::Coord
Device::SerialPort
Win32::SerialPort
grep
grep> cd pub
grep> more beer
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