Rockwell Automation 2708-NAG Application Generation Software - Manual (Page 19)

Chapter 3
Using Application Generator
3 – 9
If the F8 – SET A TIMEOUT option is chosen, you are given the choice of
setting the timeout from seconds to minutes. The following sub-menu is
displayed:
Figure 3.8
AG Timeout Selection Menu
Timeouts are a way of stopping a read operation before the operation has
finished. If your program is waiting for the user to enter his password and the
user walks off and leaves the workstation, you want your program to restart
after a given amount of time.
When you select a timeout you are also asked to specify where you want to
branch to when the timeout occurs. To select the GOTO statement, you can
use the arrow keys to select the destination statement or enter the statement
number.
This option is appended to the Read statement and replaces any previous
timeout.
Note: You stay in the Read from Keyboard/Laser Menu after selecting an
attribute. More than one attribute can be selected for a single read statement.
Be sure to press
[ENTER] and return to the Main Operations Menu for the
read statement to be entered into your program.
F4 – Read From Laser Or Device
The Read From Laser or Device menu is used to read fields and characters
from devices other than the keyboard. When
F4 is pressed the Main
Operations Menu is replaced with these options: