Rockwell Automation 1761 MicroLogix 1000 Programmable Controllers - Manual (Page 353)

Application Example Programs
E–3
This machine can drill 3 different hole patterns into bound manuals. The program
tracks drill wear and signals the operator that the bit needs replacement. The
machine shuts down if the signal is ignored by the operator.
20226
OPERATOR PANEL
Start I/6 Stop I/7
Change Drill Soon
O/4
Change Drill Now
O/6
Thumbwheel for
Thickness in 1/4 in.
Drill Change Reset 5 Hole
7 Hole 3 Hole
I/9–I/10 I/11–I/14
Drill Home
I/5
Drill Depth
I/4
Drill On/Off O/1
Drill Retract O/2
Drill Forward O/3
Photo-Eye Reset I/2
Counter Hold I/3
Photo-Eye
Reflector
Conveyor Enable wired in series to the Drive O/5
Conveyor Drive Start/Stop wired in series to the Drive O/0
(Keyswitch)
I/8
Quadrature A-B Encoder and Drive
I/0 I/1
Drilled
Holes
Paper Drilling Machine Operation Overview
Undrilled books are placed onto a conveyor taking them to a single spindle drill.
Each book moves down the conveyor until it reaches the first drilling position. The
conveyor stops moving and the drill lowers and drills the first hole. The drill then
retracts and the conveyor moves the same book to the second drilling position. The
drilling process is repeated until there are the desired holes per book.
Reference