Altium NEXUS Documentation

Exporting a Design to PADS Logic from Altium NEXUS

Created: August 30, 2019 | Updated: August 30, 2019

Altium NEXUS includes a software extension for exporting design project schematics to a PADS® Logic 5.0 format. The PADS Logic Exporter extension creates outputs compatible with PADS Logic 5.0 using a text file format, which should also be supported by future versions of PADS.

Altium NEXUS also offers a PADS Logic Importer. The Importer is included with Altium NEXUS by default, but is not necessarily enabled. To enable the importer, access the Extensions & Updates view (click on the  control at the top-right of the workspace then choose Extensions and Updates from the menu), then click Configure at the top right corner. Under the Importers\Exporters area, select the PADS option and click Apply.

PADS Logic Exporter Extension

To use the exporter, ensure the PADS Logic Exporter extension is included in the Software Extensions region on the Installed tab of the Extensions & Updates view.

If the PADS Logic Exporter extension is not listed or is at anytime uninstalled, the extension will need to be installed. To do so, access the Extensions & Updates view, then open the Purchased tab where the PADS Logic Exporter extension will be listed (the extensions are listed alphabetically). Click  to download the extension, then restart Altium NEXUS when prompted.

Using the Exporter

To use the export functionality:

  1. Make a schematic the active document.
  2. Choose the File » Export » PADS Logic 5.0 command from the main menus.
  3. Use the Export File dialog that appears to define where, and with what name, the exported PADS file is to be saved.
  4. Use the Export settings dialog to choose between exporting the whole project (all sheets) or just the selected (active) sheet.
  5. Another dialog will follow to confirm a successful export – the exported txt file is then available in the nominated save location.

Example export of an active schematic sheet to PADS Logic 5.0 format.
Example export of an active schematic sheet to PADS Logic 5.0 format.

The exporter may also produce a corresponding log file ([project_name].log) if schematic export errors are encountered. Note that a Warning! xxx not connected! log entry (where xxx is a component/pin name) indicates that the component pin is connected directly to another component pin or net, rather than connected via an intervening Wire object.

Export restrictions

  • The extension does not support Harness export because PADS does not have a compatible entity.
  • Multi-level hierarchies are not supported because PADS only allows one level.
  • All exported Pins will have the same length regardless of source data. Pins have a parametrized length in Altium NEXUS, while PADS pins are standalone objects whose lengths are defined as graphics coordinates.
  • Since PADS does not support junction points over Buses, a T connection for two Buses is not compatible. Only single Nets are supported.
  • Repeat modifiers in sheet symbols are not supported because PADS does not have a compatible entity.
  • Ports set directly to Buses are not compatible, however Ports set to corresponding Nets will be exported.
     
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