Siemens SIMATIC PANEL PC 877 - Manual (Page 111)

Functions
11.2 Safecard on Motherboard (SOM)
SIMATIC Panel PC 877
Operating instructions, Release 07/2006, A5E00877780-01
11-3
Here the current temperature and limit values are shown. You can
toggle the temperature display mode to indicate either the current
temperature, or the min./max. values measured since the start of the
application.
(1a) Internal processor temperature
(1b) Device temperature beneath the power supply:
upper threshold can be set from 30°C to 80°C
(1) Temperature range
(1c) Cooling air temperature surrounding the DVI connector:
- depending on device 3°C to 5°C higher than the ambient
temperature
- upper threshold can be set from 25°C to 55°C
(2) Watchdog range Here, you can configure the watchdog function in your monitoring
application. You can specify the watchdog time, activate a PC reset
and activate / deactivate the watchdog.
You can read the current fan speed in this area.
(3a) Fan speed in the area close to the processor
(3) Fan area
(3b) Fan speed on the power supply
The description of the drivers and SOM software for Windows is available on the
"Documentation and Drivers" CD under Drivers/Tools >Tools>PPC877.
From the CD, run Install.bat and follow the instructions on your screen.