A trend log is a collection of time-stamp values. In WebStation, you can create a trend log from a value.
间隔趋势日志
The interval trend log collects data at a specific time interval. Each logged value is stored as a record in the trend log. Use this trend log when the logging interval is less than 1 hour.
有关更多信息,请参阅 间隔趋势日志
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扩展趋势日志
You use an extended trend log to transfer records from a trend log. An extended trend log can be connected to a trend log or connected in a series to another extended trend log. Only one extended trend log can be connected to a trend log.
有关更多信息,请参阅 扩展趋势日志
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日志记录存储
All trend logs use circular storing. How many records a trend log can store before overwriting old ones depends on the trend log configuration.
有关更多信息,请参阅 日志记录存储
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仪表功能
The meter function adds meter properties to any trend log type to seamlessly handle consumption calculations independent of meter rollover or meter exchange.
有关更多信息,请参阅 仪表功能
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