PLC does indeed show it to be the Z-axis feed module.
SIEMENS SINAMICS FEED MODULE FAULT OR IMPACT RESISTANT HEAD TRIPPED(Via Profibus or Profinet)
Z AXIS FEED MODULE FAULTED Fault1=7900 Flt2=0 Flt3=0 AbsPos=-0.0367 FE=0.0367
Managed to get it homed, then it faults while no motion is being ...



