5138

Navigate to SYSTEM > PARAM and check parameter 8000 (FSSB channel configuration) and parameters 8001-8008 (axis assignment for each FSSB channel). Verify each controlled axis has a corresponding FSSB assignment number that matches the amplifier's rotary switch or LCD setting.

Access MAINTENANCE > FSSB SETTING screen and verify the number of axes detected matches the physical amplifier count. Compare displayed axis numbers with parameter 8001-8008 assignments.

If parameters are blank or incorrect, restore from backup or manually configure: Set parameter 8000 bit settings for FSSB channel enable, then assign each axis in parameters 8001-8008 (value = physical amplifier axis number 1-8). Power cycle the control after parameter changes.

WARNING: Parameter changes require power cycle. Ensure parameter write enable (bit 0 of parameter 0000) is set to 1 before editing, then set back to 0 after.

Execute FSSB axis automatic setting from MAINTENANCE > FSSB SETTING menu by selecting AUTO SETTING function. This scans the FSSB network and automatically assigns detected amplifiers to axis parameters.

Check DIAGNOSIS > FSSB screen to view connection status of each amplifier. Look for axes showing 'NOT CONNECTED' or error status. Note which axis numbers are missing from the detected list.

Inspect fiber optic FSSB cables (orange cables) between CNC and amplifiers for damage, excessive bending (radius <30mm), or loose JL1A/JL1B connectors. Check LED indicators on amplifier FSSB ports - both TX and RX LEDs should illuminate green during communication.

WARNING: Do not look directly into fiber optic cable ends. Laser light can cause eye damage.

Verify amplifier power supply: Check for 200VAC input at amplifiers, verify amplifier POWER LED is solid green, and check ALARM LED is off. If ALARM LED is lit, note the 4-digit alarm code from amplifier LCD display.

Verify amplifier axis address setting matches parameter assignment: Check rotary switch or LCD axis number setting on each amplifier corresponds to values in parameters 8001-8008. Duplicate or missing axis numbers will prevent complete FSSB initialization.

Navigate to MAINTENANCE > FSSB SETTING > AMPLIFIER DATA screen and compare displayed amplifier model numbers with physically installed amplifiers. Check for mismatches in αi series (αiSV, βiSV) or capacity ratings.

Execute AMPLIFIER ID CLEAR function from MAINTENANCE > FSSB SETTING menu to clear stored amplifier identification data. This forces the CNC to re-detect and register all amplifiers on the FSSB network.

WARNING: This operation clears amplifier-specific tuning data. Servo tuning may need readjustment after this procedure.

After ID clear, power cycle the entire system (CNC and amplifiers). Upon restart, CNC will auto-detect amplifiers and populate parameters 8100-8139 with current hardware information. Verify alarm clears and all axes appear in DIAGNOSIS > FSSB screen.

If alarm persists after re-initialization, check parameter 8900 series (FSSB communication speed and protocol settings). Verify parameter 8900 matches amplifier specifications - typically set to 0 for standard 4Mbps communication with αiSV/βiSV amplifiers.