This is what my AV throws up when I visit that site, possibly your AV isnt picking it up or possibly mine is throwing a false warning.
Anyway onto your question, the pic in the last post is from the Mach FTP site which shows which pins are for which when in MaxNC mode. To put Mach into that mode go to config menu then Ports and pins then to the right you will see the two different Max modes, choose the NC one. You will not be able to configure the pins further, whats in the diag is what you need to do.
Hood