Rockwell Automation 1772-LV Mini-PLC - 2/15 Programmable Controller (Series B) Programming and Operations - Manual (Page 150)

Special Programming Techniques
Chapter 11
11Ć3
OnĆline Programming Procedure
The changes to your program that you can make in the on-line programming
mode include the following:
Insert an instruction
Remove an instruction
Insert a rung
Remove a rung
Change an instruction or instruction address
The on-line programming mode is accessible from the industrial terminal by
pressing the key sequence [SEARCH][5][2]. The processor keyswitch must be
in the RUN/PROG position. The heading, “ON-LINE PROGRAMMING” will
appear in the top right-hand corner of the screen highlighted in reverse video.
The procedure for programming on-line in run/program mode is similar to the
procedure for editing in program mode with the exception that the following
three keys have a special purpose in on-line programming:
[RECORD]
[CANCEL
COMMAND]
[DATA INIT]
Use the [RECORD] key to enter a change to your program. Once pressed, the
changed program is active.
Use the [CANCEL COMMAND] key to abort any on-line programming
operation prior to pressing the [RECORD] key. It restores the ladder diagram
display and program logic to its original state prior to the on-line programming
operation. You can also use it to terminate the on-line programming mode.
The [DATA INIT] key will be discussed next.
You must enter two types of information when programming the following
instructions:
Get Counters
Equal to Files
Less than Sequencers
Timers
The two types of information needed are the instruction and operating
parameters.
NOTE: Operating parameters are used only for file and sequencer instructions.
Data Initialization Key