COMMON LED Blink (1:1 High Speed)
Communication Halted by Alarm
Fanuc · R-30iB Mate + Mate Plus Robot
What does COMMON LED Blink (1:1 High Speed) mean?
The Common LED blinks rapidly (0.25s ON / 0.25s OFF), indicating that communication is halted due to an active alarm condition. Further investigation of other alarm indicators is required to pinpoint the specific cause.
Repair Steps
- 1
Identify the cause of the alarm according to the states of the red ALM LED or information displayed on the CNC screen.
Verified technical data. Last updated: March 2026
Source: Fanuc R-30iB Mate + Mate Plus Robot