UPDATE:
So far I have gotten a couple setups working. with HLFB and linuxcnc.
wiring:
Connect Green wire to the assigned output pin then daisy chain all HLFB wires on all motors green to red on the last motor hook the left over red wire to ground.
software(MSP&Linuxcnc) options:
1. (a)as a charge pump: set Hlfb to "servo on" in MSP, (b)set an output pin in Lcnc as "charge pump",
2. Enable set Hlfb to "in-range" in MSP then set the values in advanced move done criteria, (b)set an output pin in Lcnc as "enable", (c)Connect Green wire to the assigned output pin then daisy chain all HLFB wires on all motors green to red on the last motor hook the left over red wire to ground.
3. broken/clogged tool sense might also be possible with ASG torque in msp and enable in lcnc with a bit of tweaking.(haven't fully tested)
4. use of ASG-Position for move verification for future moves.
For example, when a homing routine completes, this output will change states.
So, instead of waiting for an operator input to continue or a timer that calculates the worst case time for homing to complete, this could be programmed to be handled automatically based on the ASG-Position state.