What causes Siemens SINUMERIK alarm 100911?

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 100911?

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 100911 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

Communication · Intermediate · 30-120 minutes

Alarm 100911

Siemens 840D 100911 - Remote diagnostics: Error 01 -int4f_func(ACCEPT)-

Alarm 100911 indicates a communication failure in the remote diagnostics system, specifically an internal error with the ACCEPT function for socket connections. This occurs when the control cannot establish or maintain a remote diagnostic TCP/IP connection, typically due to network configuration issues, firewall blocking, or corrupted communication parameters in the system software.

Siemens SINUMERIKCommunicationIntermediate30-120 minutes

100911

Siemens 840D 100911 - Remote diagnostics: Error 01 -int4f_func(ACCEPT)-

Remote diagnostics: Error 01 -int4f_func(ACCEPT)-

Root Cause Summary

Alarm 100911 indicates a communication failure in the remote diagnostics system, specifically an internal error with the ACCEPT function for socket connections. This occurs when the control cannot establish or maintain a remote diagnostic TCP/IP connection, typically due to network configuration issues, firewall blocking, or corrupted communication parameters in the system software.

Safety

Refer to Siemens documentation
Ensure qualified technician performs repairs

Causes and Fixes

1
Check NCU network settings via HMI: Startup > Network Configuration. Verify IP address, subnet mask, and gateway are correct and match your network infrastructure.
2
Verify Windows firewall settings on PCU/TCU if using integrated systems. Ensure ports 102, 443, and any custom remote service ports are open for inbound connections.
Changing firewall settings may expose the system to security risks. Consult IT security policies before modification.
3
Check network switch/router configuration between NCU and remote diagnostics workstation. Verify VLAN settings and port forwarding rules allow diagnostic traffic.
4
Test basic network connectivity using PING command from service laptop to NCU IP address. If ping fails, resolve network layer issues before proceeding.

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