Rockwell Automation 1771-IJ_IK IK ENCODER/COUNTER MODULES - Manual (Page 57)

7–3 Special Programming
Publication 1771ĆUM006B-EN-P - June 2002
Figure 7.2
Ladder Logic for Extending the Count Beyond 999 (PLC-3 Program)
RUNG NUMBER RMO
RUNG NUMBER RM1
] / [
WN005:0002
17
C0100
( CU )
17
C0100
( DN )
15
C0100
( CD )
16
C0100
( DN )
15
WN005:0002
17
RUNG NUMBER RM2
RUNG NUMBER RM3
MVM
MOVE WITH MASK
A : WB002:0200
0110000101011100
B : WB005:0000
000011111111111111
R : WB005:0001
0000000101011100
MOV
MOVE FROM A TO R
A : WB005:0001
0000000101011100
R : WN005:0000
348
LES
A < B
A : WN005:0002
0
B : WN005:0003
-500
SUB
A - B = R
A : WN005:0000
348
B : WN005:0001
348
R : WN005:0002
0
GRT
A > B
A : WN005:0002
0
B : WN005:0004
500
CTU
COUNTER UP C0100
CP = 32000
CA = 4
CTD
COUNTR DOWN C0100
CP = 32000
CA = 4
MOV
A : WN005:0000
348
348
R : WN005:0001
MOVE FROM A TO R
] [