Ok, after a few minutes of talking to Alex, I got the correct "GUI syntax" through my head, and we now have a simple working green end control which in fact puts signals out through the DAC.
Note to self, do not put any additional filters or controls in the IOP module. Basically just change the master block with GDS numbers, DCU_ID numbers, etc. When using a control model, copy the approriate ADC and ADC selector or DAC to the control model. It will magically be connected to the IOP.
A correct example of a simple control model is attached.
Next in line is to get the adapter boxes for SUS into the new 1X5 rack and get started on SUS filter conversion and figuring out which ADC/DAC channels correspond to which inputs.