Siemens SIMATIC HMI IPC477C Comapct Operating Instructions page 18

Compact Operating Instructions
1.8 Connecting
Connection components of the control unit
①
NOTICE
Ensuring degree of protection P65 (front)
When the sealed cover over the USB port is removed in order to connect a USB
component, the degree of protection for the front of the device is no longer guaranteed.
Note
Use of USB devices
 Wait at least ten seconds between removal and reconnection of USB devices. This also
 When using standard USB peripherals, bear in mind that their EMC immunity level is
 Peripherals are developed and marketed by individual vendors. The respective
18
1 USB 2.0 connection, high current / 500 mA below sealed cover
applies to control units with touch screen panels, especially for touch operation.
frequently designed for office applications only. These devices may be used for
commissioning and servicing. However, only industry-standard devices are allowed for
industrial operation.
manufacturers offer support for the peripherals. Moreover, the terms of liability of the
individual vendors or suppliers apply here.
SIMATIC HMI IPC477C / HMI IPC477C PRO
Compact Operating Instructions, 10/2010, A5E02368072-02