16150

Note the channel and block number from the alarm. Review the NC program listing around the reported block to identify the PUTFTOC or PUTFTOCF statement.

In SINUMERIK Operate, navigate to Maintenance > Machine Data > Spindle and verify MD18082 value. This defines the maximum spindle number available on your control (typically 1-4 on 840D).

Correct the NC program: either reduce the spindle number argument to ≤ MD18082, or reconfigure MD18082 and related spindle machine data (MD18080, MD18081, MD18100+) if additional spindles are required.

Changing spindle count machine data requires reboot of the NCK. Test on offline simulator first.

Clear the alarm via Reset or Emergency Stop, reload the corrected NC program, and re-execute the block.

Examine the PUTFTOC/PUTFTOCF call in the NC source code. Check if the spindle argument is a variable, parameter, or computed expression.

In the NC program, add conditional logic or range checking to ensure the spindle number is always in the valid range 1 to MD18082 before the PUTFTOC call.

Reload the NC program and verify the spindle argument is initialized with a valid default value (e.g., PUTFTOC(1, ...) for spindle 1).

Navigate to Maintenance > Machine Data > Spindle in SINUMERIK Operate. Cross-check MD18082 (spindle count), MD18100 (spindle type array), and MD18110+ (speed/torque parameters) for all spindles 1 through MD18082.

If inconsistencies are found, restore machine data from a known good backup via Maintenance > Backup/Restore > Restore Machine Data.

Backup/restore requires SafeLogIn level 3 or higher. Consult commissioning documentation for the correct baseline configuration.

After restore, perform a cold start (Ctrl+Shift+F12 or via Maintenance > Restart NCK) to reload all machine data into memory.