Monitoring Functions; Overview; Status Displays - Siemens SIMATIC Box PC 820 Manual

2.11

Monitoring Functions

2.11.1

Overview

The following individual functions are available:
S
Temperature monitoring and over/under temperature display
S
Watchdog
Monitoring module messages can be forwarded to an application.
SOM program devices as well as Windows NT and Windows 98 drivers are
available for this purpose. Using these you can display status or parameterize
limiting values.
You can find descriptions of the drivers and the SOM programs on this CD
Documentation and Drivers.
2.11.2

Status displays

LED Indicators
The LEDs have the following significations:
LED
Run Watchdog inactive
Temp System OFF
Siemens Distributor
Box PC 820 / PC FI45 V2, Manual
A5E00051531-03
OFF GREEN
Watchdog active
Normal internal
temperature
Motherboard
RED
Watchdog executed
internal temperature beyond
acceptance level or cable towards
temperature sensor unplugged or
interrupted.
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