Temperature Monitoring/Display; Watchdog (Wd) - Siemens SIMATIC IPC427E Operating Instructions Manual

5.1.2

Temperature monitoring/display

The temperature is recorded by means of three temperature sensors. The sensors monitor the
processor temperature and the temperature in the area of the RAM module and the
motherboard at the display port sockets.
The following fault reaction is triggered if one of the three temperature values exceeds the
set thermal threshold:
Reaction
Alarm window of the DiagBase or DiagMonitor software alerts the user.
The temperature error is saved until the temperatures have fallen below the thresholds and it
is reset by one of the following measures:
• Acknowledgment of the error message by the user with DiagBase or DiagMonitor software
• Restart of the device
5.1.3

Watchdog (WD)

Configuration
You configure the watchdog with the DiagBase or DiagMonitor software.
Function
The watchdog is able to monitor system runtime and informs the user about the different
reactions that are triggered if the system does not respond to the watchdog within the
specified monitoring time.
A watchdog alarm is retained after a restart and is only reset and logged by the DiagBase or
DiagMonitor software. The watchdog configuration is retained in the process.
Watchdog reactions
The following reactions can occur if the watchdog is not addressed within the set time:
Option
Reset on
Reset off
Restart
Shutdown
SIMATIC IPC427E
Operating Instructions, 02/2021, A5E37454814-AE
Reaction
Executes a hardware reset when the watchdog expires
Executes no action when the watchdog expires
Restarts the operating system when the watchdog expires
Shuts down the operating system when the watchdog expires
Extended device functions
5.1 Monitoring Functions
Option
None
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