Siemens SIMATIC ET 200AL, System Manual

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Setting and determining system diagnostics
4.2 Options for displaying system diagnostics
Diagnostics
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Security events
The following security events (event types) result in an entry in the diagnostics buffer.
● Going online with the correct or incorrect password
● Manipulated communications data detected
● Manipulated data detected on memory card
● Manipulated firmware update file detected
● Changed protection level (access protection) downloaded to the CPU
● Password legitimization restricted or enabled (by instruction or CPU display)
● Online access denied due to the possible number of simultaneous access attempts being
exceeded
● Timeout when an existing online connection is inactive
● Logging on to the Web server with the correct or incorrect password
● Creating a backup of the CPU
● Restoring the CPU configuration (Restore)
To prevent the diagnostics buffer being "swamped" by large numbers of identical security
events, you can set parameters so that these events are entered in the diagnostics buffer as
a group alarm. For every interval (monitoring time), the CPU then only generates one group
alarm per event type.
Configuring a group alarm for security events
To configure group alarms for security events, follow these steps:
1.
Click on the CPU icon in the network view.
The properties of the CPU are displayed in the Inspector window.
2. Navigate to the "Protection" > "Security event" area.
3. Click "Security event".
4. Select the option "Summarize security events in case of high message volume" to enable
group alarms for security events.
5. Set the duration of an interval (monitoring period); the default is 20 seconds.
4.2.2.7 "Online tools" task card
Online view in the "Online tools" task card
The following requirements must be met to display the online view of the "Online tools" task
card in STEP 7:
● An online connection to the CPU is available.
● You have selected the CPU in the topology view, network view or device view.