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Locate the G200 command in the program where the alarm occurred and examine the T parameter (time constant in milliseconds).

Verify the time constant is within the valid range specified in your machine builder's programming manual, typically T1 to T10000.

Check that the parameter format follows the correct syntax: G200 T____ (example: G200 T500 for 500ms gentle start).

Correct the parameter value to be within range or remove the gentle start command if not needed, then reset the alarm and restart the program.

Access the CNC parameter screen and check parameter 1610 (bit settings for Gentle Start enable) - verify bit 0 is set to enable the function.

Only modify parameters if you have proper authorization and have recorded original values for recovery.

Verify the control has the Gentle Start option enabled by checking the CNC configuration and software options list (typically found in the SYSTEM menu).

If the option is not available, remove all G200/G201 commands from the program or contact your machine tool builder about enabling this feature.

If parameters were changed, cycle power to the control, then test the program with valid G200 commands.

Parameter changes require power cycle to take effect.

Review the program block containing G200/G201 and verify it is on a separate line without conflicting motion commands (G00, G01, G02, G03 should not be in the same block).

Check for proper program structure: G200 T____ should be commanded before the motion blocks where gentle acceleration is desired, and G201 cancels the function.

Verify there are no duplicate parameters or special characters causing parsing errors in the G200 command line.

Restructure the program to place G200 on its own block before motion begins, ensure proper cancellation with G201, then test execution.