Rockwell Automation FactoryTalk Historian SE 3.0 Live Data Interface User Guide - Manual (Page 27)

5
●
Point Configuration
●
●
●
●
●
21
For more information on the individual point types, refer to the FT Historian
SE Server Reference Guide , available in the Common Files > Rockwell > Help
folder in your Program Files directory.
Location1
Location1 indicates to which copy of the interface the point belongs. The
value of this attribute must match the /id startup parameter. The default
value for the FTLD Local Interface is 1.
Location2
Location2 is not used for the FTLD Interface.
Location3
Location3 is used to define a data collection mode:
0 - Polled or Event Data is collected based on the scan rate and saved in the buffer.
When the Historian server requests data, the data stored in the buffer
is sent to the server. In this method, the values being sent to the
Historian server are from a buffer, so they may not represent the
exact (current) values in the controllers.
1 - Advise (Default) Data is collected only when a value changes in the controller. It is not
based on the scan rate. It is the default data collection method and is
the most efficient because data is sent to the Historian server only
when the value changes.
2 - Output Data is written back to the Live Data server such as RSLinx
Enterprise, HMI server such as FactoryTalk View, or OPC server such
as RSLinx Classic. Use this method when you want to write data
points back to the data servers.