That cable I think is for the K200, this is a K000, I found a thread that listed HMI8 to PC3 and HMI7 to PC2, which I did - makes sense, the manual for the 304K000 shows the 7 & 8 for 232, but for some reason, I still can't communicate with it.
I flipped the switches and reset it, but just can't seem to commission it.