Applicable Systems
Series 0i
Series 16/18/21
Alpha
Beta
Symptoms
A ready signal error was detected on the spindle. Alarm 189 is displayed on the CNC screen.
Possible Causes
- Program or parameter data error
- Configuration or setting incorrect
- I/O operation failure
- System state conflict
Troubleshooting Steps
- Step 1: Check the CNC alarm screen for alarm 189
Alarm message and details displayed - Step 2: Identify the affected program, parameter, or axis from the alarm message
The specific cause is identified - Step 3: Correct the program, parameter, or setting as required
The corrected value is accepted - Step 4: Press RESET to clear the alarm
Alarm clears and system returns to normal operation
How to Reset
Press the RESET key on the CNC operator panel to clear the alarm after correcting the cause.
Frequently Asked Questions
- Q: What does Fanuc alarm 189 mean?
Spindle Ready Error: A ready signal error was detected on the spindle.
- Q: How do I fix Fanuc alarm 189?
Review the alarm message on the CNC screen, identify the specific program or parameter causing the issue, correct it, then press RESET to clear the alarm.
Source: Fanuc 0i/0iMate Alarm Code List, FANUC Corporation
Category: CNC