230-01B9

Access axis configuration menu

Navigate to MOD function -> CfgAxes -> select the axis mentioned in alarm (%3) -> ParamSet to view current encoder input assignments.

Use the TNC's search function (GOTO) to quickly locate specific parameter entries in large configuration files.

Check posEncoderInput parameter

Examine the posEncoderInput value for the affected axis and note the input channel number (X%2 from alarm message).

Do not modify parameters while machine is in automatic mode or during active machining operations.

Verify other axis configurations

Check all other configured axes' posEncoderInput parameters to identify which axis is using the same input channel.

Use TNC's parameter comparison tool if available to quickly identify duplicate assignments across multiple axes.

Reassign encoder input

Change the posEncoderInput parameter for one of the conflicting axes to an unused encoder input channel, ensuring proper encoder cable connections match the new assignment.

Review recent configuration changes

Check TNC's configuration history log (if available) or maintenance records to identify recent axis configuration modifications or additions.

TNC systems often maintain a configuration change log accessible through the service menu.

Examine axis parameter sets

Navigate to CfgAxes and compare ParamSet configurations between the conflicting axes, looking for identical parameter blocks that should be unique.

Always backup current configuration before making parameter changes using the TNC's backup function.

Verify physical encoder connections

Cross-reference the posEncoderInput parameter values with actual encoder cable connections at the TNC's encoder input terminals.

Use a multimeter to verify encoder signal presence at the assigned input terminals before finalizing parameter changes.

Update and validate configuration

Correct the posEncoderInput assignments to match physical connections and perform a configuration validation through MOD -> System -> Validate Config.

Document current physical connections

Create a map of all encoder cables and their current physical connections to TNC encoder input terminals (X%2 channels).

Ensure machine power is off before inspecting encoder connections to prevent electrical hazards.

Compare with software configuration

Access CfgAxes -> ParamSet for each axis and compare posEncoderInput values with the physical connection map created in step 1.

Use the TNC's diagnostic screen to view real-time encoder signals and verify which inputs are receiving data.

Identify mismatched assignments

Locate axes where the posEncoderInput parameter does not match the physical encoder connection, focusing on the input mentioned in the alarm (X%2).

The TNC's encoder diagnostic display can help identify active encoder inputs during manual axis movement.

Realign parameters with hardware

Update posEncoderInput parameters to match physical connections or relocate encoder cables to match existing parameter assignments, then restart the TNC system.

Perform configuration database check

Access MOD function -> System -> Database Check to run TNC's internal configuration integrity verification.

Database operations may require machine downtime and should be performed during scheduled maintenance windows.

Backup and restore configuration

Create a complete system backup, then attempt to restore from a known good configuration backup if database corruption is detected.

Keep multiple dated configuration backups on external media to ensure recovery options are available.

Rebuild axis configuration

If corruption persists, manually recreate the affected axis configuration in CfgAxes -> ParamSet, ensuring unique posEncoderInput assignments for each axis.

Document all parameter values before rebuilding to ensure accurate reconstruction of the original configuration.

Validate and test system

Run complete system validation and perform axis reference point procedures to verify proper encoder input functionality after configuration rebuild.

Verify encoder sharing requirements

Determine if the machine design actually requires multiple axes to share encoder feedback from a single encoder source.

Consult machine documentation to confirm if encoder sharing is intentional design or configuration error.

Configure shared encoder parameters

If sharing is required, access CfgAxes -> ParamSet and configure proper shared encoder parameters instead of duplicate posEncoderInput assignments.

Shared encoder configurations require specific TNC software versions and may not be supported on all systems.

Implement master-slave axis relationship

Configure one axis as master with direct posEncoderInput assignment and others as slaves referencing the master axis encoder through appropriate coupling parameters.

Master-slave configurations often require additional parameters for backlash compensation and following error limits.

Test coupled axis operation

Perform careful manual testing of all coupled axes to ensure proper encoder feedback and synchronized movement behavior.