Siemens PANEL PC 877 operating instructions 12-5

Maintenance and service

12.3Separating the control unit from the computer unit

5.Loosen cables K1 to Kx and the USB cable between the computer unit and the control unit

6.Two mounting rails are screwed onto the computer unit whose angled ends (4) are located in the corresponding recesses in the computer unit. Lift the computer unit vertically out of these recesses

7.Put the computer unit down carefully.

8.Where necessary, also remove the control unit depending on its design: Secure the control unit against falling out and unscrew it. Or remove the clamps which secure the control unit to the installation wall, as shown in the mounting cut-out in the dimensions diagram.







Figure 12-2 Other interfaces on the computer unit

1Display cable K2 and display cable K3 *)

2 USB cable

3 IO/USB cable K1

*) Only for 19" touch panel fronts.

SIMATIC Panel PC 877	12-5
Operating instructions, Release 07/2006, A5E00877780-01