What causes Siemens SINUMERIK alarm 101616?

Part program contains an illegal or unsupported command for the current machine configuration. Parameter or machine data setting incompatible with the commanded operation. Required option or function not enabled on this SINUMERIK control. Incorrect axis assignment or configuration for the commanded function. Software version or compile cycle version mismatch.

How do I fix Siemens SINUMERIK alarm 101616?

1. Note the full alarm message including any parameter values shown (e.g., axis number, block number, channel). 2. Identify the program block or operation that triggered the alarm. 3. Review the SINUMERIK alarm manual for alarm 101616 to identify the specific cause and remedy. 4. Check the relevant machine data parameters referenced in the alarm. 5. If the alarm persists after correcting the program, contact Siemens technical support with the full alarm text and machine data backup.

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Siemens SINUMERIK Controller

Program/G-code · Intermediate · 30-120 minutes

Alarm 101616

Siemens 840D 101616 - Illegal format

Alarm 101616 occurs when the CNC control detects a syntax error or invalid data format in the NC program being executed. This typically happens when program commands don't conform to the proper SINUMERIK programming syntax, contain illegal characters, or have incorrect parameter formatting that the parser cannot interpret.

Siemens SINUMERIKProgram/G-codeIntermediate30-120 minutes

101616

Siemens 840D 101616 - Illegal format

Illegal format

Root Cause Summary

Alarm 101616 occurs when the CNC control detects a syntax error or invalid data format in the NC program being executed. This typically happens when program commands don't conform to the proper SINUMERIK programming syntax, contain illegal characters, or have incorrect parameter formatting that the parser cannot interpret.

Safety

Refer to Siemens documentation
Ensure qualified technician performs repairs

Causes and Fixes

1
Note the exact block number (N-number) where the alarm occurred from the alarm display.
2
Open the NC program in the editor and locate the flagged block. Check for missing spaces between addresses, incorrect decimal points (comma vs. period based on system settings), or special characters.
3
Verify all G-code addresses have valid numerical values and that axis coordinates follow the correct format (e.g., X100.5 not X100.5.2 or X=100.5).
4
Correct the syntax error, reset the alarm (NC START or RESET key), and retest the program from a safe position using single block mode.

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