Siemens SIMATIC IPC127E Operating Instructions Manual page 85

Problem
USB device not responding
"chkdsk" is not functioning
SIMATIC IPC127E
Operating Instructions, 01/2019, A5E44296915-AA
Possible cause
The USB ports are not correctly
supported.
UWF (Unified Write Filter) is active.
The "chkdsk" command is not
supported if the UWF is activated.
Possible remedy
Turn on USB Legacy Support for mouse and
•
keyboard.
For other devices, you need the USB device
•
drivers for the required operating system.
Deactivate the UWF or use an alternative method to
"chkdsk".
Technical support
A.2 Troubleshooting
85