KEYENCE Visual KV Series User Manual
Page 356
8.2 Details
3-332
8
Chapter 8 Programming Examples
2008
Turn ON for 1st scan only at startup.
2813
SET
E I
0500
#00010
T000
T000
RES
0000
2002
SET
0500
0500
Interrupt enabled
Input time constant
10
µs
Turns ON timer for
1s when 0500 is ON.
Resets 0500 when
T000 turns ON.
Sets interrupt input
at 0000.
Sets 0500 when
0000 turns ON.
END
I NT
RET I
ENDH
Initial settings
■ Resetting internal utility relays
When input relay No. 0000 turns ON, all internal utility relays No. 1000 through 1915
turn OFF.
SFT instruction can be substituted for RES instruction. This application can be used
to reset many relays at one time.
Ladder diagram
Coding
Applications of HSP instruction
■ High-speed fetching of input data
When the input signal at 0000 has pulses of 5-ms interval and input relay 0001 is
ON, fetches data from input relay 0000 at high speed and outputs 1-s one-shot
pulse from output relay 0500.
Timing diagram
Ladder diagram
Coding
*
To input a signal having pulse interval shorter than the scan time, use the inter-
rupt instruction.
➮ Refer to p. 3-192.
■ When using the interrupt instruction
Ladder diagram
2003
2003
0000
1000
D
SFT
CLK
RES
1915
0001
0000
0500
1s
0001
0000
0500
#00010
T000
1-s timer
0500
T000
Outputs
1-s one-shot
pulse from
output relay
0500.
0000
HSP
Line No.
Instruction
Operand
0000
LD
2003
0001
LD
2003
0002
LD
0000
0003
SFT
1000 1915
Line No.
Instruction
Operand
0000
LD
0001
0001
HSP
0000
0002
LD
0000
0003
OR
0500
0004
TMR
000 #00010
0005
ANB
T000
0006
OUT
0500
KVNKA Chap 08.p65
08.3.11, 0:12 PM
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