Rockwell-automation 2708-NAG Application Generation Software Manual de usuario descargar pdf (Pagina 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.

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Rockwell-automation 2708-NAG Application Generation Software Manual de usuario Pagina 18