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Monitoring Functions - Siemens SIMATIC Box PC 840 Manual

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7.4

Monitoring Functions

The LEDs described in the following passages exist only for specific device
models. The basic model of the Box PC 840 has no LEDs. The assignment of the
front ports is described in Section 7.5.2.
7.4.1
Overview
Function
The following individual functions are implemented:
S Temperature monitoring and excess/insufficient temperature indication
S Watchdog
S Fan monitoring
Messages from the monitoring modules can be transferred to applications.
The program SOM (Safecard On Motherboard) as well as drivers for Windows are
available on the units for this. The status can be displayed or limits parameterized
thereby.
You will find a description of the drivers and the SOM program on the
Documentation and Drivers CD in the \Drivers.*\Safeonbo.ard directory.
7.4.2
Signals on the Front Interface
The meaning of the indicators is as follows:
LED
Watchdog
Temp
HD
SIMATIC Box PC 840 Manual
A5E00085984-04
OFF
Watchdog not active
Watchdog active
Inside temperature
normal
No hard disk activity
Hard disk activity
Hardware Information
GREEN
Watchdog executed
Inside temperature
outside the permissible
range.
RED
7-5

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