Siemens · DAsl Diagnostics and Alarms
The workpiece probe or its tool edge data is either inactive or contains incorrect values, specifically if the length L1 is zero. This issue prevents the system from accurately using the probe for measurement or calibration, potentially causing measurement errors or collisions. The error code A indicates an inactive probe/tool edge, while B indicates L1 is zero.
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Access the HMI tool management system and verify the L1 length parameter for the active probe tool (e.g., T101, D1).
Ensure the workpiece probe is correctly selected and active (e.g., T-number matches mounted probe).
Check parameter P4190 (Probe selection) to ensure the correct probe type is assigned.
Perform a probe calibration cycle using a known reference artifact to re-establish L1 and R values.
Verify the PLC program logic for probe activation and data transfer to the NCU.