Rockwell Automation 2708-NAG Application Generation Software - Manual (Page 18)

Chapter 3
Using Application Generator
3 – 8
Lookup in workstation file: You enter the name of the Lookup
File and the starting character position to compare.
Figure 3.7
AG Lookup Options Menu
Lookup in Host file : You enter the name of the Lookup File and
the starting character position to compare. These lookups are
performed by your host computer. Allen-Bradley Network Manager
Software (Catalog No. 2708-NNM) V5.0 must be installed and
running on your host computer in order for host lookups to work.
This allows a workstation program to always have up to the minute
information about a file which is being maintained by the host
computer.
The LOOKUP options allow you to restrict input to values which
match those in a workstation file or in a HOST file. It is a method of
verifying data against a file or obtaining records from a file. A text file
must first be created using a text editor or another program.
Lookups can be selected here or in the sub-menu from the
Move/Transfer/Add menu.
Note: When using Read lookups, the data read from the file is always placed
in the OUT variable.