Rockwell Automation 1761-HHP-B30 MicroLogix 1000 with Hand-Held Programmer (HHP) - Manual (Page 473)

Appendix E
Application Example Programs
E–30
Rung 2:1
Starts up the high-speed counter with the above parameters. Each time the
rung is evaluated, the hardware accumulator is written to C5:0.ACC.
| +HSC–––––––––––––––+ |
|–––––––––––––––––––––––––––––––––––––––––––+HIGH SPEED COUNTER+–(CU)–|
| |Type Up/Down+–(CD) |
| |Counter C5:0+–(DN) |
| |Preset 350| |
| |Accum 0| |
| +––––––––––––––––––+ |
Rung 2:2
Packing machine running too fast for the filling machine. Slow down the
packing machine to allow the filler to catch up.
| Slow Pack |
| +LES–––––––––––––––+ O:0 |
|–+LESS THAN +–––––––––––––––––––––––––––––––––––––––(L)–––––|
| |Source A C5:0.ACC| 2 |
| | 0| |
| |Source B 100| |
| | | |
| +––––––––––––––––––+ |
Rung 2:3
If the packer was slowed down to allow the filler to catch up, wait until
the holding area is approximately 2/3 full before allowing the packer to
run at full speed again.
| Slow Pack | Slow Pack |
| +GRT–––––––––––––––+ O:0 O:0 |
|–+GREATER THAN +––––] [–––––––––––––––––––––––––––––––––(U)–––––|
| |Source A C5:0.ACC| 2 2 |
| | 0| |
| |Source B 200| |
| | | |
| +––––––––––––––––––+ |
Rung 2:4
Filling machine running too fast for the packing machine. Slow down the
filling machine to allow the packer to catch up.
| Slow Fill |
| +GRT–––––––––––––––+ O:0 |
|–+GREATER THAN +––––––––––––––––––––––––––––––––––––––––(L)–––––|
| |Source A C5:0.ACC| 1 |
| | 0| |
| |Source B 250| |
| | | |
| +––––––––––––––––––+ |
Rung 2:5
If the filler was slowed down to allow the packer to catch up, wait until
the holding area is approximately 1/3 full before allowing the filler to
run at full speed again.
| Slow Fill | Slow Fill |
| +LES–––––––––––––––+ O:0 O:0 |
|–+LESS THAN +––––] [–––––––––––––––––––––––––––––––––(U)–––––|
| |Source A C5:0.ACC| 1 1 |
| | 0| |
| |Source B 150| |
| | | |
| +––––––––––––––––––+ |