61811

In NCK → Machine Data → Channel [n] → Axis Assignment, verify MD10100 (axis list for channel). Cross-reference the programmed axis name against the assigned axes.

Check MD10110 through MD10120 for extended or rotary axis assignments if using RTCP or multi-axis configurations.

Open Diagnostics → Service → Machine Data Filter and search for the programmed axis. Confirm it is listed under the active channel's machine data set.

Axis names are case-sensitive in the configuration; verify exact spelling match (e.g., 'A' vs 'a').

If the axis must be added to the channel, edit MD10100 to include the axis name, save the machine data, and perform a warm restart (Ctrl+Alt+R) to reload the NCK.

Review the NC program block listed in alarm message (Block %2). Inspect the axis address for non-alphanumeric characters, spaces, or multi-character designations that are not mapped in MD15000-MD15090 (extended axis name mapping).

Ensure no leading numbers or special characters are used unless the axis is explicitly aliased in the machine data.

If using extended or aliased axis names, verify MD15001 through MD15090 contain the correct mapping. Access NCK → Machine Data → General → Extended Axis Names.

Correct the NC program to use only standard ISO axis designators (X, Y, Z, A, B, C, U, V, W) or confirm that extended names are defined in the machine data before reloading the program.

Check the machine data timestamp in Diagnostics → Service → Machine Data. Compare it against when axis assignments were last modified using the 'Last Modified' field.

Perform a warm restart by pressing Ctrl+Alt+R, or power-cycle the control and allow the NCK to complete full initialization (watch for 'NCK Ready' message in the status bar).

Do not start a program during NCK initialization; wait for the green status indicator before resuming operation.

After restart, reload and re-parse the NC program. The alarm should clear if the axis is now correctly defined in the channel's active machine data set.