Cause : Internal software error - comes when G120 drives typically indicates a problem with the firmware or software running on the drive. This error can occur due to various reasons, including corrupted firmware, hardware malfunction, or improper configuration settings. Here's how you can troubleshoot this issue:

1. Power Cycle: Try turning off the drive, waiting for a few minutes, and then turning it back on. Sometimes, a simple restart can resolve temporary software glitches.

2. Check Firmware Version: Ensure that your drive's firmware is up-to-date. Siemens periodically releases firmware updates to address bugs and improve performance. Refer to the official Siemens website or contact Siemens technical support for assistance with updating the firmware.

3. Inspect Wiring and Connections: Ensure that all connections to the drive are secure and properly connected. Loose connections or damaged cables can sometimes cause internal errors.