Siemens SIMATIC PANEL PC 877 - Manual (Page 45)

Connecting
6.1 Connection and operator control components
SIMATIC Panel PC 877
Operating instructions, Release 07/2006, A5E00877780-01
6-3
Connection components of the control unit
USB connection control unit
Item Name Description
(1) USB 1 connection USB 2.0 high current (500 mA)
under sealing flap (not available with every
product variant).
Notice
Guarantee for the IP 65 degree of protection
When the sealed cover over the USB interface is removed in order to connect a USB
component, the IP 65 degree of protection for the device is no longer guaranteed.
Note
Use of USB devices
•
Wait at least 10 seconds between the unplugging and replugging of USB devices. This
also applies in particular to touch control in control units with touch screen panels.
• When using standard USB peripherals, bear in mind that their EMC immunity level is
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.
• Peripherals are developed and marketed by individual vendors. The respective
manufacturers offer support for the peripherals. Moreover, the terms of liability of the
individual vendors or suppliers apply here.