Rockwell Automation 1747-PT1, D1747NP002 Hand-Held Terminal - Manual (Page 189)

Monitoring Controller Operations
Chapter 12
12–3
Accessing Data Files
There are four ways to access the data table:
Option 1
While offline, press [F3] , PROGMAINT, from the menu display, then
[ENTER] , and [F1] , EDT_DAT.
Option 2
While monitoring a program offline, press [ENTER] and [F1] , EDT_DAT.
Option 3
While online, press [ENTER] from the main online display, then [F4] ,
EDT_DAT.
Option 4
While monitoring a program online, press [F3] , EDT_DAT.
Important: Data table file protection is available with any of the SLC 500
processors. However, the form of protection can only be
changed during offline programming.
•
Fixed and SLC 5/01 processors – output files are always
protected and all other files are unprotected from online
changes while the processor is in the Run mode.
•
SLC 5/02 processors – at the time you save your program
you can protect output files, all files, or no files from online
changes while the processor is in the Run mode.
Monitoring a Data File
The following count–up ladder program is an example of how to monitor
data files.
CTU
COUNT UP
Counter
C5:0
Preset 3
Accum 0
] [
I:1.0
0
Rung 0
(CU)
(DN)
] [
C5:0
CU
0:3.0
0
( )
] [
C5:0
DN
0:3.0
1
( )
] [
C5:0
OV
0:3.0
2
( )
0:5.0
Rung 1
Rung 2
Rung 3
Rung 4
(RES)
END
] [
I:1.0
1