Opening .zal14 Files in TIA Portal V14: Archived Library Retrieval Procedure

A .zal14 file is a Siemens archived global library produced by TIA Portal V14 (and matching Service Pack / Update releases). When the file does not appear in the standard Add dialog of the Libraries task card, the reason is almost always that the user is attempting to load an archived library through the wrong code path. Archived libraries in TIA Portal use the .zal<version> family of extensions and are restored through a dedicated Retrieve command, not through Open or Add. This article documents the exact retrieval workflow, the version compatibility rules that govern the zal13 / zal14 / zal15 / zal15_1 sequence, the file-format internals, and the manual extraction fallback using 7-Zip when the normal retrieve path is unavailable.

1. Library Architecture Overview in TIA Portal

TIA Portal separates reusable engineering objects into two top-level library containers. Understanding the distinction is the first prerequisite for resolving any .zal file issue.

The .zap prefix indicates an open compressed global library; the .zal prefix indicates an archived read-only snapshot. A library author distributes a finished library as .zal<version> to prevent accidental modification by consumers. The consumer must retrieve the archive to convert it into an editable .zap (or unzipped folder) on disk before its content can be added to a project.

2. The .zal File Extension Family and Version Map

Each TIA Portal major version uses its own library file extension so that the engineering tool can refuse to load incompatible structures. The mapping observed in the field is shown below.

3. Why the File Does Not Appear in the Libraries Task Card

The default behaviour of the TIA Portal Libraries task card is to show open global libraries that are already registered with the current project. The Add command in the global library pane accepts an already-retrieved .zap<version> file or an unzipped library folder. It does not accept an archived .zal<version> file because the file system filter is hard-wired to the .zap* family in this dialog. This is by design, not a defect.

Archived libraries are introduced to the workspace through the Retrieve archived global library workflow, which lives on the Options menu, not on the Libraries task card. Once retrieved, the archive is unpacked to a directory of your choice and registered as an open library, after which its types, FB/FCs, faceplates, HMI screens, and master copies are usable from the Libraries task card like any other global library.

4. Prerequisites

• TIA Portal V14 (any Service Pack) installed and licensed on the engineering station. V14 SP1 is recommended for the broadest .zal14 coverage.
• A valid Windows user profile with write access to the directory where the retrieved library will be unpacked.
• The .zal14 file downloaded or copied to a known local path. Network paths with latency or read-only attributes can interfere with the unpack step.
• If the original library is from V15.1, do not attempt retrieval with V14. See Section 8 for the upgrade path.
• Optional fallback: 7-Zip 18.05 or newer for the manual extraction path described in Section 9.

5. Step-by-Step Retrieval Procedure (TIA Portal V14)

1. Launch TIA Portal V14 and open the project that will consume the library, or open a blank project if the library contents are going to be explored before being placed under a specific project.
2. From the menu bar select Options → Global libraries → Retrieve archived global library. The menu text may read Retrieve archived library in some localized builds; the function key is identical.
3. In the file dialog, navigate to the directory containing the .zal14 file. The file filter is set to Archived global libraries (*.zal*). The .zal14 file must appear in the listing. If it does not, the file is either truncated, blocked by Windows Mark-of-the-Web, or the extension is mismatched (for example, the file is actually a .zal15_1 that was renamed).
4. Select the .zal14 file and click Open. TIA Portal begins the unpack. The destination is prompted in a second dialog.
5. Choose a destination folder. Avoid the original download folder, the Windows Program Files tree, and any directory synchronized with cloud storage. The retrieved library will be written as a folder plus an internal index, and the directory must remain stable for the lifetime of the project that references the library.
6. Confirm the destination. TIA Portal extracts the archive and registers the resulting open library in the Global libraries pane of the Libraries task card.
7. Expand the registered library in the task card. Verify that the expected types, function blocks, and faceplates are present before closing the project.
8. Drag the desired elements into the project tree, or use Copy from the library context menu. Master copies (folder icons) are placed under Project library → Master copies; types are placed under the corresponding PLC or HMI folder.

6. Verification After Retrieval

After a successful retrieval, perform the following checks before relying on the library in a production project.

• Library version stamp: Right-click the registered library in the task card and open Properties. The version field should match the source .zal14 archive. If TIA Portal shows a lower version, the archive was re-saved by an older TIA Portal and may have lost elements.
• Compile test: Drop a representative function block from the library onto an S7-1200 or S7-1500 PLC and trigger a full Software (rebuild all) compile. Library version mismatches typically surface here as warnings of the form "The library version is newer than the project version".
• Type consistency: If the project already contains PLCs from a previous library retrieval, run Project → Library → Compare with library to detect interface drift between the two snapshots.
• Instance DB count: For libraries shipping FB instances, confirm that the expected number of multi-instance DBs is generated after compile. Missing DBs usually indicate that the library was only partially retrieved.

7. Working with .zal15 and .zal15_1 Archives

If the archive on disk is .zal15 or .zal15_1, the same Options → Global libraries → Retrieve command applies, but the receiving TIA Portal must be V15 or V15.1 respectively. The version handshake is enforced by the extension itself, not by the dialog filter, so renaming .zal15_1 to .zal15 will not bypass the check.

8. Upgrading a V14 Project to a V15.1 Library

1. Open the project in TIA Portal V14 and run a full Archive of the project to create a backup before any upgrade.
2. Migrate the project to TIA Portal V15 using Project → Migrate project. Save the migrated project under a new name.
3. Open the migrated project in TIA Portal V15.1 (installed in parallel with V15 if needed). Allow the second migration pass to complete.
4. Apply Options → Global libraries → Retrieve archived global library against the .zal15_1 file. The library is now consumable by the migrated project.
5. Run a full Software (rebuild all) on every PLC in the project. Inspect the compile buffer for any block that the new library has re-typed; refactor the call sites if interfaces have shifted.

9. Manual Extraction with 7-Zip as a Last Resort

When Retrieve fails because the archive is corrupt, partially downloaded, or produced by a TIA Portal version that cannot be installed on the workstation, the .zal container can be opened as a standard ZIP file with 7-Zip. The .zal format is a ZIP container with a Siemens-specific metadata header. The procedure is:

1. Install 7-Zip 18.05 or later. Earlier versions do not always recognize the .zal extension and may require the file to be renamed to .zip.
2. Right-click the .zal14 file in Windows Explorer and choose 7-Zip → Extract Here or Extract to <filename>\.
3. Inspect the extracted folder. The expected top-level structure is:

   <library_name>/
     ├── LibraryTypes.xml        (master index of all published types)
     ├── MasterCopies/           (folder of master copy XMLs)
     ├── PlcBlocks/              (S7 PLC source blocks: FBs, FCs, DBs, UDTs)
     ├── Hmi/                    (faceplates, screens, HMI tags)
     └── System/                 (vendor-supplied internal metadata)
   

4. 7-Zip extraction is read-only from a versioning standpoint: the resulting folder is not registered as a global library in TIA Portal, and the internal cross-references in LibraryTypes.xml are not validated. Use this path only for inspection, recovery, or to confirm that the archive contains the expected content before requesting a fresh copy from the library author.
5. To re-import the extracted folder into TIA Portal, point the Global libraries pane at the folder using Open library (not Retrieve) and accept any warnings about missing signature metadata.

10. Troubleshooting Matrix

11. Library Author Side: Producing a .zal14 Archive

For completeness, the workflow that produces a .zal14 archive in the first place is:

1. In TIA Portal V14, open the project that contains the library elements to be distributed.
2. Select Options → Global libraries → Create archived global library.
3. Choose a destination filename with the .zal14 extension.
4. Distribute the resulting file through the Siemens support portal, the company intranet, or a versioned source-control repository. Document the TIA Portal version, Service Pack level, and the SHA-256 of the file alongside the download link.

Authoring tips: keep the library project on a single TIA Portal major version; mixing V14 and V14 SP1 sources produces a library that the consumer's V14 (without SP1) can read but will warn about. Re-archiving a library on each patch level is the cleanest way to keep the version stamp in lockstep with the engineering station.

12. Field-Engineer Quick Reference

• Default retrieval path: Options → Global libraries → Retrieve archived global library
• File dialog filter expected: Archived global libraries (*.zal*)
• Output of a successful retrieve: An open global library registered in the Libraries task card, backed by a folder on local disk
• Manual fallback tool: 7-Zip 18.05+, file filter *.*, then Extract Here
• Hard compatibility cut: .zal15_1 → V15 not possible; migrate to V15.1 or stay on V15.1-native projects only
• Best practice: Always migrate the consumer project forward to match the library, never downgrade the library to match the project