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Preface – Rockwell Automation 1761 MicroLogix 1000 Programmable Controllers User Manual

Page 364

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Preface

MicroLogix 1000 Programmable Controllers User Manual

E–14

Rung 7:1
Resets the number of 1/4 in. increments and the 1/4 in. thousands when
the ”drill change reset” keyswitch is energized. This should occur
following each drill bit change.

| drill change 1/4 in. |
| reset keyswitch Thousands |
| I:0 +CLR–––––––––––––––+ |
|––––] [–––––––––––––––––––––––––––––––––––––+–+CLEAR +–+–|
| 8 | |Dest N7:11| | |
| | | 0| | |
| | +––––––––––––––––––+ | |
| | 1/4 in. | |
| | increments | |
| | | |
| | +CLR–––––––––––––––+ | |
| +–+CLEAR +–+ |
| |Dest N7:10| |
| | 0| |
| +––––––––––––––––––+ |

Rung 7:2

Moves the single digit BCD thumbwheel value into an internal integer
register. This is done to properly align the four BCD input signals
prior to executing the BCD to Integer instruction (FRD). The
thumbwheel is used to allow the operator to enter the thickness of the
paper that is to be drilled. The thickness is entered in 1/4 in.
increments. This provides a range of 1/4 in. to 2.25 in.

| BCD bit 0 |FRD bit 0 |
| I:0 N7:14 |
|–––––––––––––––––––––––––––––––––––––––––––+––––] [––––––––( )–––––+–|
| | 11 0 | |
| | BCD bit 1 |FRD bit 1 | |
| | I:0 N7:14 | |
| +––––] [––––––––( )–––––+ |
| | 12 1 | |
| | BCD bit 2 |FRD bit 2 | |
| | I:0 N7:14 | |
| +––––] [––––––––( )–––––+ |
| | 13 2 | |
| | BCD bit 3 |FRD bit 3 | |
| | I:0 N7:14 | |
| +––––] [––––––––( )–––––+ |
| 14 3 |

This rung accesses I/O only available with 32 I/O controllers. Do not include this rung if you are using a 16 I/O
controller.