Siemens SIMATIC IPC277E Operating Instructions Manual page 50

Installing and connecting the device
3.3 Connecting the device
NOTICE
Damage through regenerative feedback
Regenerative feedback of voltage to ground by a connected or installed component can
damage the device.
Connected or built-in I/Os, for example, a USB drive, are not permitted to supply any
voltage to the device. Regenerative feedback is generally not permitted.
50
Operating Instructions, 11/2019, A5E35783335-AE
SIMATIC IPC277E