Rockwell Automation 1761 MicroLogix 1000 Programmable Controllers - Manual (Page 209)

Using Application Specific Instructions
11–21
Application Specific Instructions in the Paper Drilling
Machine Application Example
This section provides ladder rungs to demonstrate the use of application specific
instructions. The rungs are part of the paper drilling machine application example
described in appendix E. You will begin a subroutine in file 4.
This portion of the subroutine tells the conveyor where to stop to allow a hole to be
drilled. The stop positions will be different for each hole pattern (3 hole, 5 hole, 7
hole), so separate sequencers are used to store and access each of the three hole
patterns.
Note Address I:0/10 is only valid for 32 I/O controllers. If you use a 16 I/O controller,
only the 5 hole drill pattern can be used.
OPERATOR PANEL
Start I/6 Stop I/7
Change Drill Soon
O/4
Change Drill Now
O/6
Thumbwheel for
Thickness in 1/4”
Drill Change Reset 5 Hole
7 Hole 3 Hole
I/9–I/10 I/11–I/14
(Keyswitch)
I/8
Drilled Holes
Hole Selector
Switch
Drill
Programming