Program Editing
Chapter 24
24-11
Searching for the First and Last Rung and User Boundaries
You can locate the program boundaries including the first or last rung from
any point in the program. Perform the following step.
1. Press [Search][
↑
] or [Search][
↓
].
The user program could contain a Temporary End instruction boundary
and/or a subroutine area boundary. It always contains an END
statement boundary.
When you press [Search][
↑
], the cursor goes directly to the first rung from
anywhere in the program.
When you press [Search] [
↓
], the display goes to the next boundary in the
direction indicated. By pressing the [SEARCH] [
↓
] key sequence again, a
subsequent boundary is displayed until the program end statement
is reached.
Boundaries are displayed at the top of the screen with subsequent program
rungs displayed beneath. No rungs follow the END statement.
You can clear the data table, user program and messages using various
clear memory functions. When memory write protect is active, the data
table cannot be cleared except between and including addresses 010-177
(Table 24.C).
Clearing Memory
