Digsi 4.91 Download |top| | Siemens

DIGSI 4.91 is the specialized engineering and commissioning software used to configure, test, and maintain Siemens SIPROTEC 4

Unlike some competitor tools, DIGSI is not free software. It requires a license key (USB dongle or SL card). While you can download and install the software without a license, it will likely run in "Demo Mode," restricting your ability to save changes or upload configurations to the relay. siemens digsi 4.91 download