What causes Siemens SINUMERIK alarm 104003?

Normal control operation generated this status message. User action or program command triggered this notification. System configuration or commissioning activity produced this message. Machine data or parameter change created this notification.

How do I fix Siemens SINUMERIK alarm 104003?

1. Read the complete message text on the SINUMERIK screen — note any parameter values shown. 2. If action is required, follow the instructions in the message. 3. Acknowledge the message on the operator panel to continue operation. 4. Consult the Siemens SINUMERIK alarm documentation for message 104003 if clarification is needed. 5. If this message appears unexpectedly, review recent parameter or configuration changes.

Siemens SINUMERIK codes

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Siemens SINUMERIK Controller

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

Alarm 104003

Siemens 840D 104003 - There are no tools

This alarm occurs when no tools are defined or set up in the system. To fix it, ensure tools are properly configured in the tool management system.

Siemens SINUMERIKProgram/G-codeIntermediate30-120 minutes

104003

Siemens 840D 104003 - There are no tools

There are no tools

Siemens SINUMERIK message 104003: There are no tools. This is an operator information message from the SINUMERIK control. Note the complete message text as it may contain important parameter values.

Root Cause Summary

This alarm occurs when no tools are defined or set up in the system. To fix it, ensure tools are properly configured in the tool management system.

Safety

Refer to Siemens documentation
Ensure qualified technician performs repairs

Causes and Fixes

1
SAFETY FIRST - Ensure machine is stopped
Verify machine is in STOP mode, spindle is stopped, and all axes are stationary before proceeding.
2
Access tool management
Navigate to the tool management menu on the HMI.
3
Define tools
Enter tool data (e.g., tool number, type, dimensions, offsets) as required for the program. Verify tool geometry data matches physical tools.
4
Save and restart
Save the tool data, clear the alarm, and restart the program in safe mode first to verify tool calls.

DIY Feasiblehigh confidence

Call a technician if:

·If tool management access is restricted or unclear
·If the alarm persists after defining tools
·If you are unfamiliar with tool offset procedures
·If tool geometry setup is complex or critical

Prevention

Always set up tools before running a program
Validate tool numbers in the program against the tool database
Create tool setup checklists for consistent procedures
Verify tool geometry data matches physical tools before machining

Common Mistakes

Forgetting to load tool data after a system reset
Using tool numbers not yet defined in the system

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Always verify with your machine manual or a certified technician before performing service procedures.