Correct, no display for my MS-MPPT-60. Have not really needed it.
RS232 to USB connects to a netbook computer for programming. After the initial programming I think I tweaked it a bit only once. It just runs blind at this point and works great.
MSview works on the 45 but the programming is different.
With 675 watts it would take ideal conditions and a low battery to be much above 45 amps. Controller has no issues limiting current to the rating or running at max. Would need to have very low battery and heavy clouds until 11a with sudden clearing to get over 45 amps. Typical use and good sun I am floating by 10a. Other times I am lucky to get 2 hours of sun and the power is needed. I carry no generator.
Not sure I would want to overdrive an Ecoworthy and just let it run.
Big driver to MPPT for me was MC4 plug and play in series. No combiner, no fat wire, no panel fuses, or extra connections. Biggest downside is being cautious with 100 Vdc.