Applications of sft instruction – KEYENCE Visual KV Series User Manual
Page 107
2.4 Instruction Details
1
2
3-83
Chapter 2 Instructions
Operands
*
Note that of I/O Nos. 7000 to 9915, those that are not assigned to expansion or remote I/O
unit ports can be used for internal utility relays.
Key operation
Applications of SFT instruction
■ Alternating circuit
Every time input relay No. 0000 turns ON, 0500 turns alternately ON and OFF.
Coding
Timing diagram
Reference: Alternating circuit can be configured without SFT instruction.
The following circuit does the same operation as the circuit above.
➮ "DIFU instruction" (p. 3-78)
Coding
1000
0000
2003
1000
0500
SFT
D
1000
CLK
1000
RES
Line No.
Instruction
Operand
0000
LDB
1000
0001
LD
0000
0002
LD
2003
0003
SFT
1000 1000
0004
LD
1000
0005
OUT
0500
ON
OFF
ON
ON
ON
ON
ON
0000
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
SFT
FUN
O R
9
ORL
3
Operand
(Relay No.)
Operand
(Relay No.)
ENT
R-SRCH
ENT
R-SRCH
0000
1000
DIFU
1000
1000
0500
0500
0500
Visual KV
KV-300
KV-10/16
KV-24/40/80
1000 to 1915
1000 to 1915
1000 to 1915
1000 to 1915
3000 to 6915
3000 to 6915
3000 to 6915
*7000 to 9915
KVNKA Chap 02_4aP.p65
08.3.11, 11:58 AM
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