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FANUC Rigid Tapping Alarm Analysis
FANUC Rigid Tapping Alarm Analysis
1. PS0200 Illegal S-code command
Alarm Cause: The spindle speed commanded during a rigid tapping operation exceeds the set maximum speed limit.
Troubleshooting Steps:
Verify that the spindle speed commanded in the program is correct.
Adjust the maximum spindle speed parameters (P5241–P5243).
2. PS0201 Feed rate not commanded during rigid tapping
Alarm Cause: Programming error; the feed rate for the rigid tapping operation was not specified.
Troubleshooting Steps:
Verify the spindle speed setting for the tapping axis within the program.
Verify the modal G-code setting (G94/G95).
3. PS0202 Position LSI overflow
Alarm Cause: System error; the spindle distribution value (position feedback) is excessive during rigid tapping.
Troubleshooting Steps:
Check the spindle encoder wiring (potentially using a simulated spindle function); verify and correct the A, A̅, B, and B̅ connections.
4. PS0203 Rigid tapping command error
Alarm Cause: Programming error.
Troubleshooting Steps:
The command format for rigid tapping is incorrect; ensure it follows the format `M29 Sxxxx`.
5. PS0204 Illegal axis command
Alarm Cause: An illegal axis movement command was issued.
Troubleshooting Steps:
Modify the program; do not command any axis movement between the `M29 Sxxx` command and the tapping cycle command (`G84`/`G74`).
6. PS0205 Rigid tapping mode DI signal OFF
Alarm Cause: Error in the ladder logic (PMC) regarding the processing of the rigid tapping signal.
Troubleshooting Steps:
Modify the ladder logic to ensure that the G61.0 signal remains active and correct throughout the rigid tapping process.
If a multi-spindle configuration is used, verify the multi-spindle control signals.
7. PS0206 Cannot change plane
Alarm Cause: An attempt was made to switch the machining plane during a rigid tapping operation.
Troubleshooting Steps:
Modify the program; plane selection commands (`G17`/`G18`/`G19`) cannot be executed while a rigid tapping operation is in progress.
8. SV0410 Servo Alarm: Axis *n* excess error
Alarm Cause: The position error (deviation) of axis *n* (the tapping axis, typically 1–4) exceeds the preset limit while the axis is stopped. Troubleshooting Approach:
Adjust the position error limit parameters: P5312 (Main Spindle 1) and P5352 (Main Spindle 2).
9. SV0411 Servo Alarm: N-axis Position Error
Cause of Alarm: The position error of the N-axis (Tapping Axes 1–4) while at a standstill exceeds the set limit.
Troubleshooting Approach:
Adjust the position error limit parameters: P5313 and P5314.
10. SV0740 Rigid Tapping Alarm: Position Error
Cause of Alarm: The position error is excessive while the spindle is in motion.
Troubleshooting Approach:
Increase the values of parameters P5310 / P5350 and P5312 / P5352.
Adjust the tapping gain, feedforward settings, and time constants to reduce the error.
11. SV0741 Rigid Tapping Alarm: Position Error
Cause of Alarm: The position error exceeds the set limit while the spindle is in motion.
Troubleshooting Approach: Increase the value of parameter P5214.
1. PS0200 Illegal S-code command
Alarm Cause: The spindle speed commanded during a rigid tapping operation exceeds the set maximum speed limit.
Troubleshooting Steps:
Verify that the spindle speed commanded in the program is correct.
Adjust the maximum spindle speed parameters (P5241–P5243).
2. PS0201 Feed rate not commanded during rigid tapping
Alarm Cause: Programming error; the feed rate for the rigid tapping operation was not specified.
Troubleshooting Steps:
Verify the spindle speed setting for the tapping axis within the program.
Verify the modal G-code setting (G94/G95).
3. PS0202 Position LSI overflow
Alarm Cause: System error; the spindle distribution value (position feedback) is excessive during rigid tapping.
Troubleshooting Steps:
Check the spindle encoder wiring (potentially using a simulated spindle function); verify and correct the A, A̅, B, and B̅ connections.
4. PS0203 Rigid tapping command error
Alarm Cause: Programming error.
Troubleshooting Steps:
The command format for rigid tapping is incorrect; ensure it follows the format `M29 Sxxxx`.
5. PS0204 Illegal axis command
Alarm Cause: An illegal axis movement command was issued.
Troubleshooting Steps:
Modify the program; do not command any axis movement between the `M29 Sxxx` command and the tapping cycle command (`G84`/`G74`).
6. PS0205 Rigid tapping mode DI signal OFF
Alarm Cause: Error in the ladder logic (PMC) regarding the processing of the rigid tapping signal.
Troubleshooting Steps:
Modify the ladder logic to ensure that the G61.0 signal remains active and correct throughout the rigid tapping process.
If a multi-spindle configuration is used, verify the multi-spindle control signals.
7. PS0206 Cannot change plane
Alarm Cause: An attempt was made to switch the machining plane during a rigid tapping operation.
Troubleshooting Steps:
Modify the program; plane selection commands (`G17`/`G18`/`G19`) cannot be executed while a rigid tapping operation is in progress.
8. SV0410 Servo Alarm: Axis *n* excess error
Alarm Cause: The position error (deviation) of axis *n* (the tapping axis, typically 1–4) exceeds the preset limit while the axis is stopped. Troubleshooting Approach:
Adjust the position error limit parameters: P5312 (Main Spindle 1) and P5352 (Main Spindle 2).
9. SV0411 Servo Alarm: N-axis Position Error
Cause of Alarm: The position error of the N-axis (Tapping Axes 1–4) while at a standstill exceeds the set limit.
Troubleshooting Approach:
Adjust the position error limit parameters: P5313 and P5314.
10. SV0740 Rigid Tapping Alarm: Position Error
Cause of Alarm: The position error is excessive while the spindle is in motion.
Troubleshooting Approach:
Increase the values of parameters P5310 / P5350 and P5312 / P5352.
Adjust the tapping gain, feedforward settings, and time constants to reduce the error.
11. SV0741 Rigid Tapping Alarm: Position Error
Cause of Alarm: The position error exceeds the set limit while the spindle is in motion.
Troubleshooting Approach: Increase the value of parameter P5214.
