TRiLOGI is written to support possible future PLCs that could support a larger number of features than what's available on the T100MD+ now. So there are only two HSC in T100MD+. Likewise, even though the View Variable shows 16 channels of ADC and 8 channels of PWM, on the T100MD+ there are only 8 ADC and 2 PWM available.
Similarly, TRiLOGI also shows up to 256 inputs and 256 outputs. But on the T100MD+ PLCs there aren't that many I/O.