236-A005

Access ProfiNet Address Parameters

Enter MOD mode, navigate to machine parameters, and locate MP102xxx series (CfgAxisSscNetAdr). Document the configured station address for each axis (typically MP102000 for X-axis, MP102100 for Y-axis, etc.).

Write down all configured addresses before making changes - you may need to reference the original configuration if troubleshooting goes deeper.

Verify Physical Drive Addresses

Check the actual ProfiNet station addresses on each drive using the drive's display panel or rotary address switches. For UM 1x8 or Excilon drives, verify addresses match the Heidenhain documentation for your specific inverter configuration.

Do not change drive addresses while power is applied to the drives. Always disconnect 24VDC control voltage before adjusting address switches.

Check ProfiNet Diagnostics

Navigate to Setup > ProfiNet > Device Status on the TNC screen. Verify all drives appear in the device list with correct station addresses and that their status shows 'Ready' or 'Operational' rather than 'Missing' or 'Configuration Mismatch'.

The device list will show both expected and actual devices - look for any red status indicators or devices marked as 'Not Found'.

Correct Address Mapping

Update the CfgAxisSscNetAdr parameters to match the actual physical drive addresses. Enter the correct station address for each axis in the corresponding MP102xxx parameter, then save parameters and reboot the control.

Ensure you update the correct axis parameters - mismatched axis-to-drive assignments can cause dangerous unexpected machine motion.

Access PLC Configuration

Open the TwinCAT or PLC engineering software and review the ProfiNet device configuration. Locate the GSD file entries for each Heidenhain drive module and note the assigned device names and station addresses.

On systems using TwinCAT 3, check the I/O Devices tree under the SYSTEM node - Heidenhain drives typically appear as EtherCAT or ProfiNet device entries.

Compare Module Assignment Order

Verify that the order and assignment of drive modules in the GSD configuration matches the axis designation in TNC machine parameters MP7210x (axis assignment). The sequence must align: axis name, station address, and GSD module position.

Print out both the PLC device tree and the TNC MP7210x through MP7212x parameters for side-by-side comparison - mismatches are easier to spot visually.

Update GSD Configuration or TNC Parameters

Depending on which configuration is authoritative (usually the physical installation), either update the PLC GSD file to match TNC parameters or vice versa. Download the updated PLC configuration and reboot both PLC and TNC to synchronize.

Always create a backup of both PLC project and TNC parameters before making configuration changes. Document all changes for future reference.

Verify ProfiNet Communication

After synchronizing configurations, check ProfiNet diagnostics in TNC (Setup > ProfiNet) to confirm all drives are detected correctly. Test axis reference run to verify proper drive assignment and motion direction.

Perform reference runs in single-axis mode (Setup > Axis Test) before attempting full machine operation - this isolates any remaining assignment issues.

Identify Replaced Hardware

Document which drive or drives were replaced. Check maintenance logs or service records to determine if the replacement drive was configured with the same ProfiNet address as the original unit.

Heidenhain inverters often have address settings stored in rotary switches - these must be manually set and are not automatically retained from the old unit.