Specifications

7. Application Instructions
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7-29
M1002
MOV K4
X10
M0
SET Y0
C251
DHSCR K100 C251 Y10
DCNT C251
Ϩʳ When D1022=K1, the timing diagram of one double frequency will be
as follows:
X10
C251
A-phase (X0)
B-phase (X1)
Counting
up
Counting
down
Ϩʳ When D1022=K4, the timing diagram of one double frequency will be
as follows:
X10
A-phase (X0)
B-phase (X1)
Counting
up
Counting
down
Ϩʳ When D1022=other value, the timing diagram of tw0 double frequency
will be as follows:
C251
X10
C251
A-phase (X0)
B-phase (X1)
Counting
up
Counting
down
 When M0 = ON, High speed counter C251 counts as follow:
Count value Contact status Y10
101

100 No change No change
100

99 OFF OFF
99

100 ON ON
100

101 ON ON
 When high-speed counter C251’ s value changes from (199 to 200) or
from (201 to 200), the contact of C251 will be ON and Y10 will be ON.
However, there will be scan time delay.
D
57 PLSY
S1 S2 D Pulse output
Bit device Word device
Device
Operand
X Y M S K H KnX KnY KnM KnS T C D E F
S1
ϨϨϨϨϨϨϨϨϨϨϨ
S2
ϨϨϨϨϨϨϨϨϨϨϨ
D
Y0, Y1
 Generate specified frequency and number of pulse commands