Rockwell Automation 1761-HHP-B30 MicroLogix 1000 with Hand-Held Programmer (HHP) - Manual (Page 148)

Chapter 8
Using Basic Instructions
8–29
Ladder Rungs
Rung 2:3
➀
Starts the conveyor in motion when the start button is pressed. However,
another condition must also be met before we start the conveyor: the
drill must be in its fully retracted position (home). This rung also
stops the conveyor when the stop button is pressed.
| START |Drill STOP Machine |
| Button |Home LS Button RUN |
| Latch |
| I:0 I:0 I:0 B3 |
|–+––––] [––––––––][––––––+–––]/[–––––––––––––––––––––––––––––( )–––––|
| | 6 5 | 7 0 |
| | Machine | |
| | RUN | |
| | Latch | |
| | B3 | |
| +––––] [––––––––––––––––+ |
| 0 |
➀
Rungs 2:0 through 2:2 will be added in chapter 14.
Rung 2:4
Applies the above start logic to the conveyor and drill motor.
| Machine Drill |Conveyor |
| RUN Home LS |Enable |
| Latch |
| B3 I:0 O:0 |
|––––] [––––––––––––––––––––––––––––––––––––+––––] [––––––––( )–––––+–|
| 0 | 5 5 | |
| | Drill | |
| | Motor ON | |
| | O:0 | |
| +–––––––––––––––( )–––––+ |
| 1 |
Instruction List
File 2, Rung 3
➀
Starts the conveyor in motion when the start button is pressed. However,
another condition must also be met before we start the conveyor: the
drill bit must be in its fully retracted position (home). This rung also
stops the conveyor when the stop button is pressed.
FUN GRAPHIC PARAMETER
CODE SYMBOL MNEMONIC NAME ADDRESS VALUE FORCES
–––– ––––––– –––––––– –––– ––––––– ––––– ––––––
20 |–] [– LD
START Button
I/6 0
22 –] [– AND
Drill Home LS
I/5 0
24 |_] [_| OR
Machine RUN Latch
B/0 0
23 –]/[– ANI
STOP Button
I/7 0
40 –( )– OUT
Machine RUN Latch
B/0 0
➀
Rungs 2:0 through 2:2 will be added in chapter 14.