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FANUC Controller
Parameter · Intermediate · 5-30 minutes
Fanuc 483 - Fssb parameter setting error
FSSB Alarm 483 indicates a mismatch or corruption in the FSSB communication parameters between the CNC control and servo amplifiers. This typically occurs after parameter changes, battery failure causing parameter loss, incorrect amplifier configuration, or when the FSSB setup data does not match the physical hardware configuration on the serial servo bus.
483
Fanuc 483 - Fssb parameter setting error
FSSB PARAMETER SETTING ERROR
An FSSB (Fanuc Serial Servo Bus) error has been detected related to fssb parameter setting error. The serial bus communication between the CNC and servo amplifiers is affected.
Root Cause Summary
FSSB Alarm 483 indicates a mismatch or corruption in the FSSB communication parameters between the CNC control and servo amplifiers. This typically occurs after parameter changes, battery failure causing parameter loss, incorrect amplifier configuration, or when the FSSB setup data does not match the physical hardware configuration on the serial servo bus.
Safety
- Verify corrected program or parameters before resuming machining
Causes and Fixes
- 1
Access CNC parameters and check parameter 8000 (FSSB setup) and verify the number of axes configured matches your machine's physical axis count.
- 2
Compare parameters 8100-8107 (amplifier type settings) with the actual amplifier models installed. Record any discrepancies.
- 3
Power off the machine completely, wait 10 seconds, then power on while observing the FSSB initialization sequence on the amplifier LEDs.
Ensure no automatic operations are active before power cycling.
- 4
If alarm persists, execute the FSSB automatic setting function from the CNC maintenance menu (System > FSSB > Auto Setting) to rebuild the FSSB configuration.
This will overwrite current FSSB parameters. Document existing parameters before proceeding.
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Seeing another alarm with this one? Enter the code.
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Always verify with your machine manual or a certified technician before performing service procedures.