Allen-Bradley 1747-PT1, Руководство пользователя

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Chapter 7
Creating and Editing a Program File
7–5
Entering a Rung
To enter a rung, do the following:
1. Press
[F3]
, EDT_FIL from the program maintenance display. The
following display appears:
File Name: 222 Prog Name:1000
File Name Type Size(Instr)
0 System *
1 Reserved *
2 222 Ladder *
3 Ladder *
ENTER FILE NUMBER:
F1 F2 F3 F4 F5
OFL
2. Edit file number 2, the main program file. Press
[2]
, then
[ENTER]
. The
display shows the
END
of program statement. No other rungs exist at this
time. The numbers
2.0.0.0.
* appear in the upper right corner of the
display. This indicates that you are editing program file 2, and the cursor
is located on rung 0, nest level 0, branch level 0, and not presently on an
editable instruction (the cursor is located on the
END
of program
statement).
F1 F2 F3 F4 F5
2.0.0.0.*
INS_RNG MOD_RNG SEARCH DEL_RNG UND_RNG
OFL
>
<
END
>
3. Press
[F1]
, INS_RNG. The following display appears:
F1 F2 F3 F4 F5
2.0.0.0.*
INS_INST BRANCH MOD_INST ACP_RNG
OFL
>
<
END
>
I I
The
I
symbol in the power rails
indicate this rung is being
inserted or edited.
The Insert Rung command inserts the new rung above the rung where the
cursor is positioned. In this case, since there are no other rungs, the new
rung is placed directly above the
END
statement. The cursor is now
located on the left power rail of rung 0. The first rung of a program file is
always numbered 0.