| Mode | Description | Best Use | |------|-------------|-----------| | | Imports only parts not existing in your DB. | First-time manufacturer data | | Overwrite existing | Replaces old data with the EDZ data. | Updating to new revision | | Merge (recommended) | Updates fields that are empty in your DB, keeps your custom fields. | Preserving your modifications |
As of 2025, version 2021 EDZ files are still fully readable by newer EPLAN versions, ensuring backward compatibility for legacy projects. Mastering EPLAN EDZ files in 2021 is not just about clicking “Import”—it’s about understanding version compatibility, merge logic, macro handling, and database integrity. With the detailed steps and troubleshooting guide above, you can now confidently import any manufacturer’s EDZ file, export your own libraries, and keep your engineering data clean and standardized. eplan edz files 2021
Here you can drag-and-drop parts directly into your project—no manual EDZ import needed. However, offline users still rely on EDZ files. Even with 2021’s improvements, errors occur. Below are the top five issues and solutions. Error 1: “File was created with a newer version” Reason: The EDZ came from EPLAN 2023 or 2024. Fix: Update your EPLAN installation or ask the sender to “Save As” EPLAN 2021 format in their export settings. Error 2: “Macro references missing – .FM5 not found” Reason: The EDZ file’s relative paths are broken (common when unzipping manually). Fix: Do not manually unzip .edz files. Import directly through EPLAN. If already damaged, use 7-Zip to extract, then manually place macros in your MACROS folder. Error 3: “Duplicate part number – import aborted” Reason: Your database already has the part number but with a different EPLAN GUID. Fix: In Parts Management, search for the duplicate part number. Delete or archive it, then re-import. Error 4: “The database is locked” Reason: Another user or process has the parts database open (network environment). Fix: Ensure no one else is in Parts Management. Close EPLAN, delete EPLAN.lock file in your project directory, try again. Error 5: “Unicode characters corrupted after import” Reason: The EDZ was saved in ANSI format (pre-2018) or your 2021 language settings mismatch. Fix: Go to Options > Settings > Company > Parts > Language and set to “System (UTF-8)”. Re-import. Part 7: Best Practices for Managing EDZ Files in 2021 To avoid turning your parts database into a chaotic mess, adopt these 2021-specific habits. 1. Centralize Your EDZ Repository Create a network folder: \\CompanyServer\EPLAN_Resources\EDZ_Incoming\ Organize by: Manufacturer\Year\Import_Date 2. Maintain a Change Log Every time you import an EDZ, add a note in your parts database. In EPLAN 2021, use the “Info” tab in Parts Management to write: “2021-11-15 – Imported Siemens SIRIUS EDZ v2.3 – Added thermal overloads.” 3. Validate with EDZ Checker (Free Tool) EPLAN offers a free command-line tool: EPLAN_EDZ_Validator.exe . Run it before any import: EPLAN_EDZ_Validator.exe --file C:\incoming\device.edz --version 2021 4. Never Edit an EDZ Directly An EDZ is signed with an internal checksum. Opening it in WinRAR, changing a file, and repackaging will break the XML schema. Always re-export from EPLAN if modifications are needed. 5. Automate with the API (Advanced) EPLAN 2021’s API allows scripting of batch EDZ imports. A sample Python script using EPLANApiClient can monitor a hotfolder and auto-import new EDZ files nightly. Part 8: The Future – Beyond EDZ in EPLAN 2025+ While EPLAN EDZ files 2021 remain dominant, EPLAN is slowly moving toward cloud-native part synchronization . The new EPLAN ePulse platform allows real-time part updates without file exchange. However, for air-gapped systems (military, nuclear, critical infrastructure), the EDZ format will remain essential through 2030. | Mode | Description | Best Use |