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Preface – Rockwell Automation 1761 MicroLogix 1000 Programmable Controllers User Manual

Page 358

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Preface

MicroLogix 1000 Programmable Controllers User Manual

E–8

Rung 2:5
Calls the drill sequence subroutine. This subroutine manages the
operation of a drilling sequence and restarts the conveyor upon
completion of the drilling sequence

| +JSR–––––––––––––––+ |
|––––––––––––––––––––––––––––––––––––––––––––––––+JUMP TO SUBROUTINE+–|
| |SBR file number 6| |
| +––––––––––––––––––+ |

Rung 2:6
Calls the subroutine that tracks the amount of wear on the current
drill bit.
| +JSR–––––––––––––––+ |
|––––––––––––––––––––––––––––––––––––––––––––––––+JUMP TO SUBROUTINE+–|
| |SBR file number 7| |
| +––––––––––––––––––+ |

Rung 2:7
| |
|–––––––––––––––––––––––––––––––––––––+END+–––––––––––––––––––––––––––|
| |

Rung 4:0
Resets the hole count sequencers each time that the low preset is
reached. The low preset has been set to zero to cause an interrupt to
occur each time that a reset occurs. The low preset is reached anytime
that a reset C5:0 or hardware reset occurs. This ensures that the
first preset value is loaded into the high-speed counter at each entry
into the REM Run mode and each time that the external reset signal is
activated.

| interrupt 3 hole |
| occurred preset |
| due to sequencer |
| low preset |
| reached |
| +INT––––––––––––––––––––+ C5:0 R6:4 |
|–+INTERRUPT SUBROUTINE +––––] [–––––––––––––––––––––+–––(RES)––––+–|
| +–––––––––––––––––––––––+ IL | | |
| | 5 hole | |
| | preset | |
| | sequencer | |
| | R6:5 | |
| +–––(RES)––––+ |
| | | |
| | 7 hole | |
| | preset | |
| | sequencer | |
| | R6:6 | |
| +–––(RES)––––+ |