Rockwell Automation 1772-LP3 PLC - 2/30 Programmable Controller Programming and Operations Manual - Manual (Page 75)

Introduction to Programming
Chapter 4
4Ć11
Figure 4.13
Example Original Rung With First Part of Duplicate Rung
|ą|
00
(ą)
00
110 010
|ą|
00
110
|ą|
01
110
|ą|
01
110
| / |
02
110
| / |
02
110
Added Rung
With No
Output
Original
Rung
2. Cursor to the point where you want to change the logic and insert the
BRANCH START.
3. Insert the desired parallel logic (see Figure 4.14).
4. Insert the BRANCH END.
Figure 4.14
Example New Rung With Branch Instruction
|ą|
00
110
| / |
03
110
|ą|
01
110
| / |
02
110
5. Now insert the output instruction.
Figure 4.15
Example New Rung, Completed
(ą) |ą|
00
110
| / |
03
110
|ą|
01
110
| / |
02
110
6. Delete the original rung.