Specifications

Quadrature Encoder Signals
Quadrature encoder signals contain position and direction information, while their frequency
represents speed of motion. Phase A and B signals shown below are phase-shifted 90 degrees,
thus the quadrature name. When the rising edge of Phase A precedes Phase B’s leading edge
(indicates clockwise motion by convention), the HSIO counter counts UP. If Phase B’s rising
edge precedes Phase A’s rising edge (indicates counter-clockwise motion), the counter counts
DOWN.
Wiring Diagram
A general wiring diagram for encoders to the DL06 in HSIO Mode 20 is shown below.
Encoders with sinking outputs (NPN open collector) are probably the best choice for
interfacing. If the encoder sources to the inputs, it must output 12 to 24 VDC. Note that
encoders with 5V sourcing outputs will not work with DL06 inputs.
DL06 Micro PLC User Manual, 3rd Edition, Rev. C
E–25
Appendix E: High-speed Input and Pulse Output Features
1
2
3
4
E
6
7
8
9
10
11
12
13
14
A
B
C
D
L
O
G
I
C
K
o
y
o
0
6
C0 C4C2X1X3 X4 X6 X11X13 X14 X16 X21X23 N.C.
C1 C3X2 X5 X7 X10 X12
X15 X17 X20 X22X0
N.C.
AC
(
N
)
24V
0V
+V
C1 C3Y0 Y15Y12Y10 Y17Y7Y5Y2
C0 C2 Y16Y14Y13Y11Y6Y4Y3Y1
LGG
AC
(
L
)
OUTPUT: Sinking Output 6 - 27V 1.0A
INPUT: 12 - 24V 3 - 15mA
Y
X
D0-06DD1
40VA50-60HzPWR: 100-240V
0 1 2 3 4 5 6 7 10 11 12 13 14 15 16 17 20 21 22
23
Reset
Up Down
L
O
G
I
C
K
o
y
o
0
6
C0 C4C2X1X3 X4 X6 X11X13 X14 X16 X21X23 N.C.
C
1 C3X2 X5 X7 X10 X12
X15 X17 X20 X22X0
N.C.
AC
(
N
)
24V
0
V
+V
C
1 C3Y0 Y15Y12Y10 Y17Y7Y5Y2
C0 C2 Y16Y14Y13Y11Y6Y4Y3Y1
L
GG
AC
(
L
)
OUTPUT: Sinking Output 6 - 27V 1.0A
I
NPUT: 12 - 24V 3 - 15mA
Y
X
D0-06DD1
40VA50-60HzPWR: 100-240V
0
1 2 3 4 5 6 7 10 11 1 2 13 14 15 16 17 20 21 22
23
+
-
+24 VDC
Motor
Power Input
Amplifier
Signal Common
Pulse
Direction
A
B
Quadrature Encoder Input
Prox Sensor Input
90˚ phase shift
Phase A
Phase B
Leading Edge Signal
Phase A
Phase B
Leading Edge Signal
Clockwise sequence
Counterclockwise sequence
one cycle