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Heidenhain Controller
System · Intermediate · 30-120 minutes
HEIDENHAIN 231-E02C - E02C SKERN-CC: Dynamisierungtest ES.B fehlerhaft
The Heidenhain 231-E02C alarm typically results from a failure in the dynamic test of PLC peripheral devices, often due to an inactive or defective ES.B input. The most common issues are wiring errors in test groups or test outputs, or errors in the configuration file (IOC file). The most likely fix involves checking and correcting the wiring or configuration settings of the HSCI system.
231-E02C
HEIDENHAIN 231-E02C - E02C SKERN-CC: Dynamisierungtest ES.B fehlerhaft
E02C SKERN-CC: Dynamisierungtest ES.B fehlerhaft
The dynamic test of the PLC peripheral devices found that an ES.B input was not activated or is defective. Wiring errors of the test groups/outputs or an error in the IOC configuration file are the likely reasons.
Root Cause Summary
The Heidenhain 231-E02C alarm typically results from a failure in the dynamic test of PLC peripheral devices, often due to an inactive or defective ES.B input. The most common issues are wiring errors in test groups or test outputs, or errors in the configuration file (IOC file). The most likely fix involves checking and correcting the wiring or configuration settings of the HSCI system.
Safety
- Refer to Heidenhain service manual
- Ensure qualified technician performs repairs
Causes and Fixes
- 1
Inspect Wiring Connections
Visually inspect all wiring connections related to the test groups and test outputs for loose, disconnected, or damaged cables. Focus on the ES.B input connections to the PLC peripheral devices.
Use a flashlight to check for subtle damage or corrosion on connectors that might not be visible under normal lighting.
Ensure the machine is powered off and locked out before inspecting wiring to avoid electrical shock.
- 2
Test Wiring Continuity
Use a multimeter set to continuity mode to test the wiring between the ES.B input and the corresponding test output. Check for breaks or shorts in the circuit.
Label each wire before testing to avoid confusion when reconnecting, especially in complex setups.
Double-check multimeter settings to avoid applying voltage to the circuit during testing.
- 3
Repair or Replace Damaged Wiring
If continuity tests reveal breaks or shorts, repair the wiring by splicing and insulating damaged sections or replace the entire cable if damage is extensive. Re-test after repairs.
Use heat-shrink tubing for durable insulation on spliced wires to prevent future failures.
Ensure all repairs comply with Heidenhain wiring standards to avoid further issues.
Call a technician if:
- ·If wiring and configuration checks do not resolve the issue after multiple attempts
- ·If the peripheral device replacement or firmware update fails to clear the alarm
Prevention
- Regularly inspect and maintain wiring connections to prevent damage or loosening over time.
- Perform routine backups of configuration files to quickly restore settings if corruption occurs.
- Schedule periodic HSCI-BUS diagnostics to catch communication issues early.
Common Mistakes
- Overlooking minor wiring damage or corrosion during visual inspections.
- Failing to document changes to configuration files, leading to repeated errors during troubleshooting.
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