126 / 176
Siemens
Web server OZW772... V6.0
CE1C5701en
Building Technologies
Trend functions
2015-10-12
The data points within a trend are all queried at the same interval.
The entire path for a data point is always displayed simply identifying the source of
the data point.
Data points can be moved within the list.
Simply left-click the sort symbol
for the data point and keep it pressed until the
data point is moved to the new position.
A single left-click of the waste can symbol
deletes the data point from the data
point list without additional confirmation.
9.2.5 Manage trend RAM
A fixed RAM (flash) size is assigned to each trend channel. Trend channel 1 has
more RAM and is particularly well suited for long-term trending with a number of
data points, or a high query interval.
·
Trend channel 1: 14 MB
·
Trend channel 2…5: 2 MB
The read data is written first to RAM while trending. It is transmitted to Flash
memory every 60 minutes. A maximum of one hour of trend data is lost in the event
of a power outage.
Notes
Sort data points
Delete data points from
the list
