Siemens PANEL PC 877 User Manual

 

Maintenance and service 

 

12.3 Separating the control unit from the computer unit 

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

12-5

 

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 

 

1 

Display cable K2 and display cable K3

 *)

 

2 

USB cable 

3 

IO/USB cable K1 

*) Only for 19" touch panel fronts.