Rockwell Automation 9323-S5500D A.I. SERIES MICROLOGIX 1000 AND PLC-500 SOFTW - Manual (Page 85)

Data Table Addressing and Editing
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[F8] Prev Display the monitor screen for the previous data table file
[F9] Usage
(or Value )
Displays usage information for the file. An “ X ” indicates that the
ladder logic uses a particular bit or word. A “ . ” indicates that the bit
or word is unused. To return to displaying values, press [F9] Value .
The Usage screen contains an extra WF column. A W in this column
means the address is used as a word; an F means the address is part of
a group of addresses (file). See Monitoring Integer Files for an
example.
[F10] Help Displays information about using this screen.
!
Changing data table values while online can cause unexpected machine movement,
possibly resulting in personal injury or equipment damage. USE EXTREME
CAUTION WHEN CHANGING DATA TABLE VALUES!
You can use the data table monitor to change address values. To change an address
value, move to the bit or word you want to change. At the bottom of the screen, the
system indicates the address corresponding to the cursor location. Type the new value
for the bit or word, and press [Enter] or one of the cursor keys. The system changes
the value of the address, and displays the new value on the monitor screen.
!
Typing a value and then pressing a cursor key will cause the value to be entered in
the data table.