| Symptom | Likely Cause | Correction | |---------|--------------|-------------| | 300 APC alarm | Battery loss + parameter 1815#1 changed | Re-home, set APZ | | PS0101 (format error) | Wrong parameter type (binary vs decimal) | Reload backup | | Servo not moving | 1815#4 (APC) set without encoder | Set 1815#4=0 for pulse coder | | Spindle won’t orient | Parameter 4038 (orientation stop shift) wrong | Check builder’s value |
To avoid ever needing a "Hail Mary" recovery, implement these rules in your shop: fanuc parameter list upd
For an engineer who wants to read the values, you need the printed list. This is often called the FANUC Parameter List UPD (Printed output). | Symptom | Likely Cause | Correction |
Pro Tip: The "Print List" method produces an ASCII file that is perfect for comparing "before" and "after" service work. Pro Tip: The "Print List" method produces an
This is the professional standard. You output the entire parameter list as a text file.
Applies to all FANUC Series CNC controls (e.g., 0i, 30i, 31i, 32i, 18i) used in production. Covers system parameters (CNC), axis parameters, spindle parameters, and PMC (ladder) parameters.