Siemens PC 870 manual Interfaces, Front-side USB interface, Rear-side interfaces

Description of Device

2.3Interfaces

The operating unit has interfaces on the front and rear sides.

2.3.1Front-side USB interface

On the front side of the panel (see Figures 2-1 and 2-7) there is a USB interface protected by a rubber cover. This can be used, for example, to connect an external keyboard or an external mouse.

Note

When using generally available USB peripheral devices, you should note that their electromagnetic compatibility is frequently designed only for an office environment.

Such devices are adequate for commissioning and for servicing pur- poses; for industrial applications, however, we recommend the use of industry-standard components.

Note

The NEMA-standard versions do not possess a front-side USB inter- face (see Appendix: Technical Data)

2.3.2Rear-side interfaces

On the rear side (see Figure 2-8) there are two ribbon cables for con- nection of the computing unit:

￿the I/O USB cable K1 at X1 for all signals, apart from the display interface, relevant for the connection of operating units.

￿the display cable K2.

Display cable K2

IO/USB cable K1

Fig. 2-8 Interfaces on the rear side of the operating unit

SIMATIC Panel PC 670 / 870 Operating Unit, Equipment Manual	2-7
Edition 07/01