453
SPC SOFT DISCONNECT ALARM
Fanuc · Series 30i/31i/32i-MODEL B Plus
What does 453 mean?
This alarm indicates a position-pole data error, often caused by Pulse coder failure or the entry of cutting fluid. Such an error suggests a problem with the fundamental position feedback mechanism.
Common Causes
- Position-pole data error
- Pulse coder failure
- Entry of cutting fluid into the Pulse coder
Repair Steps
- 1
Replace the Pulsecoder.
Verified technical data. Last updated: March 2026
Source: Fanuc Series 30i/31i/32i-MODEL B Plus