Siemens PC 670 - Manual (Page 138)

Hardware Information Release 04/02
7-6 Panel PC 670 Computing Unit, Equipment Manual
7.4 Monitoring Functions
The LEDs described in the following sections are only available on specific
versions of the device. The basic configuration of the computing unit does not have
any LEDs. The hardware signals are described in Section 7.5.2.
7.4.1 Overview
Function
The following individual functions are implemented:
S temperature monitoring and indication of overheating and underheating
S
watchdog
S
monitoring the processor fan
Messages can be passed by the monitor modules to applications.
The program SOM (Safecard On Motherboard) as well as drivers for Windows are
available on the units for this. These tools can be used to display the status and
assign parameters to limit values.
You will find a driver description of the SOM program for each specific operating
system on the CD Documentation and Drivers in the directory \PC670.
7.4.2 Signals on the front interface
The meaning of the indicators is as follows:
LED OFF GREEN RED
Run Watchdog not
active Watchdog active Watchdog executed
Temp System turned off Inside temperature
normal Inside temperature outside the per-
missible range.