Rockwell Automation 1772-L8_LW_LWP_LX_LXP,D17726.5.8 User Manual - Manual (Page 386)

Program Editing
Chapter 24
24-13
Partial Memory Clear
You can clear part of the program and the messages. Perform the
following step.
1. press [Clear Memory] [9] [9].
The user program and messages are cleared from the cursor position which
can not be on the first instruction. None of the bits in the data table
are cleared.
Total Memory Clear
You can clear the complete memory. Perform the following steps.
1. Position the cursor on the first instruction of the program.
2. Press [Clear Memory] [9] [9].
This resets all the data table bits to zero. Perform a total memory clear
before entering the program.
Special programming aids include:
help directories
online data change
online
programming
online programming procedure
data initialization key
Special Programming Aids