How are messages shown in WinCC Alarm Control?
The display of messages in WinCC Alarm Control is limited depending on the configuration and view. The table below lists the number of messages which are possible in runtime:
5000 messages can be displayed in the "Message list" view on a single-user station or per server/server pair. This means that with a maximum of 12 servers/server pairs, up to 60,000 messages can be displayed.
|2||Short-term archive list|
The "Short-term archive list" view contains the most recent 1000 messages from all the servers/server pairs. It is updated continuously.
|3||Long-term archive list|
Up to 1000 messages are displayed on a single-user station or 1000 per server/server pair. In the case of 12 possible servers, this view lists 12,000 messages on the client.
From WinCC V6.2 onwards the property "Long Time Archive Consistency" can be set to "yes". The long-term archive list then displays a maximum of 1000 messages for all the servers. They will then be consistent in any event. You can find the "Long Time Archive Consistency" setting under "Properties > Control properties > Long Time Archive Consistency".
You can find the relevant description in the WinCC information system under "Performance Data > Configurations" and "Performance Data > Alarm Logging".