Digsi 4.90 [better] Download Upd Jun 2026

More robust programming for logic functions.

The core installation contains only base drivers. To communicate with specific protection relays, you must update the device catalog: Open the . Navigate to Tools > Device Catalog Administration .

Before installing any update, always create a backup of your current project files and user libraries. Digsi 4.90 Download UPD

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If you cannot locate the file in the SIOS portal, contacting a local Siemens sales representative or technical support team is the best way to receive a secure, validated download link. Installation Guidelines for DIGSI 4.90 UPD More robust programming for logic functions

To ensure smooth operation, your PC or laptop should meet the following hardware requirements. These are the minimum specifications recommended by Siemens for working with DIGSI 4:

: Using software from unofficial sources (like file-sharing or third-party forums) is strongly discouraged due to the high risk of malware and lack of technical support. Navigate to Tools > Device Catalog Administration

While Siemens has moved forward with DIGSI 5 for its latest hardware, DIGSI 4 remains the primary interface for thousands of legacy SIPROTEC devices in the field. is particularly notable because:

Log in with your corporate Siemens ID credentials. Access to protection software downloads typically requires an active user registration verified by Siemens.

To download Digsi 4.90, users can visit the Siemens website and follow these steps:

According to release information, DIGSI 4.90 was tested on: