Application of difu, difd instructions – KEYENCE Visual KV Series User Manual
Page 103
2.4 Instruction Details
1
2
3-79
Chapter 2 Instructions
Application of DIFU, DIFD instructions
■ One-shot circuit using the differentiate instruction
When input relay 0000 turns ON/OFF, output relay 0500 and 0501 turns ON one-
shot (1 second).
Coding
Timing diagram
■ Alternating circuit
Every time input relay 0000 turns ON, output relay 0500 turns ON and OFF alter-
nately.
Coding
0000
1000
T001
0500
1001
T002
0501
0500
1000
DIFU
1001
DIFD
#00010
T001
0501
#00010
T002
Line No.
Instruction
Operand
0000
LD
0000
0001
DIFU
1000
0002
DIFD
1001
0003
LD
1000
0004
OR
0500
0005
ANB
T001
0006
OUT
0500
0007
TMR
001 #00010
0008
LD
1001
0009
OR
0501
0010
ANB
T002
0011
OUT
0501
0012
TMR
002 #00010
ON
ON
0000
1000
1001
0500
0501
OFF
ON
OFF
ON
OFF
ON
0000
1000
DIFU
1000
1000
0500
0500
0500
Line No.
Instruction
Operand
0000
LD
0000
0001
DIFU
1000
0002
LD
1000
0003
ANB
0500
0004
LDB
1000
0005
AND
0500
0006
ORL
0007
OUT
0500
1 s
1 s
DIFU / DIFD
KVNKA Chap 02_4aP.p65
08.3.11, 11:58 AM
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