What causes Siemens SINUMERIK alarm 61418?

MD11420 (LEN_PROTOCOL_FILE) parameter set too small for measurement data being generated. CYCLE106 measuring cycle generating more data than allocated buffer size. Protocol file memory allocation insufficient for active measurement operations. Corrupted or incomplete parameter configuration after system update or reset. Multiple simultaneous measurement cycles exceeding available protocol buffer capacity.

How do I fix Siemens SINUMERIK alarm 61418?

1. Verify current MD11420 parameter value and compare against actual protocol file requirements for CYCLE106 execution 2. Review measurement cycle complexity and data output volume; increase MD11420 buffer size incrementally (typical range 4KB-64KB depending on application) 3. Clear existing protocol files and reset measurement cycle to baseline parameters, then re-execute CYCLE106 with increased MD11420 value 4. Check for parameter backup and restore defaults if configuration appears corrupted; reconfigure MD11420 to accommodate measurement data size 5. Monitor protocol file growth during CYCLE106 execution using Diagnostics menu; adjust MD11420 to 150% of observed maximum if alarm persists

Siemens SINUMERIK codes

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Siemens SINUMERIK Controller

Servo/Axis · Intermediate · 20-45 minutes

Alarm 61418

Siemens 840D 61418 - Channel block: Protocol file too small, check MD11420

Alarm can be triggered by following measuring cycle: CYCLE106 Remedy: Check MD11420: LEN_PROTOCOL_FILE.

Siemens SINUMERIKServo/AxisIntermediate20-45 minutes

61418

Siemens 840D 61418 - Channel block: Protocol file too small, check MD11420

Channel block: Protocol file too small, check MD11420

Alarm can be triggered by following measuring cycle: CYCLE106 Remedy: Check MD11420: LEN_PROTOCOL_FILE.

Safety

Refer to Siemens documentation
Ensure qualified technician performs repairs

Common Causes

MD11420 (LEN_PROTOCOL_FILE) parameter set too small for measurement data being generated
CYCLE106 measuring cycle generating more data than allocated buffer size
Protocol file memory allocation insufficient for active measurement operations
Corrupted or incomplete parameter configuration after system update or reset
Multiple simultaneous measurement cycles exceeding available protocol buffer capacity

Troubleshooting Steps

1Verify current MD11420 parameter value and compare against actual protocol file requirements for CYCLE106 execution
2Review measurement cycle complexity and data output volume; increase MD11420 buffer size incrementally (typical range 4KB-64KB depending on application)
3Clear existing protocol files and reset measurement cycle to baseline parameters, then re-execute CYCLE106 with increased MD11420 value
4Check for parameter backup and restore defaults if configuration appears corrupted; reconfigure MD11420 to accommodate measurement data size
5Monitor protocol file growth during CYCLE106 execution using Diagnostics menu; adjust MD11420 to 150% of observed maximum if alarm persists

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