The MAC/MTA series has been discontinued and support for them is hard to find. When I get to work tommorow I'll dig around and see if I have the manual in PDF somewhere. It is relatively easy to program if you speak Mitsubishi. MPP can be used as well as SW-MTA-WIN. Check with your local distributor. The software is fairly inexpensive. You will also need a programming cable which is basically an rs-232 to rs-422 converter and a plug-in transformer as the MAC-40 does not have an internal power supply. I'll see what I can find in the morning and let you know.