Siemens PANEL PC 877 User Manual

Page of 288
 
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.