We’ve all been there. The HMI screen goes black, the touch panel stops responding, or worse, a junior tech accidentally overwrites the runtime file. In the world of automation, the HMI is the window into your process, and losing that configuration can mean hours (or days) of downtime.
Do you have a locked MCGS file you can't upload from? Let me know in the comments—there are a few legacy tricks involving the bootloader, but that’s a topic for another post. Disclaimer: Always consult your machine’s safety manual before connecting/disconnecting USB drives or rebooting operational HMIs. mcgs hmi backup
A USB drive formatted to FAT32 (NTFS often fails), and the HMI powered on. We’ve all been there