Honeywell EN2Z-0906GE51 R0708 Benutzerhandbuch

EN2Z-0906GE51 R0708 

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You can define a time window (“Last xx minutes”) and a time range (“Stop after yy 

hours”). 

 

ARENA will automatically displaying the controller values. After the elapse of the 

time window, the oldest values will begin disappearing and new values will be added 

on. 

 

This will be continued until the time range has elapsed. Thus, you are shown the 

actual values for the last xx minutes until yy hours have elapsed. 

 

Example:  Last = 15 minutes, Stop after: 6 hours 
 

 

 

Trend data of the latest 15 minutes is continuously saved and 
displayed within 1 day after starting the trend. 

 

The values can be saved to the ARENA database for performing a historical trend 

later.  

 

NOTE:  Live trend is only possible on site level and on levels below and ARENA 

must be connected. 

 

 

 

Each trend is based on a template which saves the trended datapoints (not the 

values) and display settings (display type, time interval). Thus templates allow the 

easy reuse of trend settings once defined. ARENA provides two default templates, 

the Live trend template for Live trends and the Historic trend template for historical 

trends. Before firstly using a default template it contains only the display settings but 

no datapoints. New templates can be created.  

 

 

 

Trend data can be exported as .CSV file to MS Excel.  

 

 

 

Trending increases bus traffic and requires system resources. Hence, for historical 

trends, it is recommended to avoid adding more datapoints to trend than absolutely 

necessary. For Live trends, it is recommended to avoid storing datapoints in the 

database unless absolutely necessary. 

 

 

 

 

For both trend types, the basic procedure can be described as: 

 
1.  Record Trend Data 

Here you select datapoints to be trended. For historical trends, the values of the 
selected datapoints are continuously saved in the ARENA database. For Live 
trends, the values of the selected datapoints are not saved in the database by 
default, but they can be saved during the live trend when Analyzing the Trend 
Data in step 2.  

Here you do the following: 

•  Select datapoints for display 

• Configure 

display 

•  Define time interval and 

• Start 

trending 

 
 

 

Here you select the datapoints to be trended. The values of the selected datapoints 

are continuously saved in the ARENA database. This collection of trend data occurs 

in the background. 

 

NOTE:  Historical trend is possible on all levels (station, site, controller, etc.) and in 

connected and disconnected states of ARENA.