KEYENCE Visual KV Series - Manual (Page 221)

3.3 Direct Input/Output
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Visual KV
Series
1 3
Chapter 3 Interrupts
2002
2008
END
INT
0000
1000
0005
RETI
ENDH
0500
HSP
0000
HSP
0005
EI
1000
SET
2002
2008
EI
END
INT
0000
HSP
0001
HSP
0000
2002
RETI
INT
0001
2002
RETI
ENDH
0500
SET
0501
SET
3.3 Direct Input/Output
This section describes direct input and output.
3.3.1 Direct Input
The direct input function is used during interrupt processing. Direct input allows the
KV PLC to fetch the input status of the input relays during execution of the interrupt
program.
Direct input is available only with input relays 0000 through 0015 (KV-10xx: 0000-
0005, KV-16xx: 0000-0009). (KV-300: 0000-0005)
• The input time constant must be set to 10 µs by using the HSP instruction or by
turning ON special utility relay 2813.
• The direct input data is effective only within the interrupt program so that the
internal utility relay must be provided.
3.3.2 Direct Output
Direct output allows the Visual KV PLC to output the ON/OFF status of output relays
during execution of the interrupt program. Direct output is available only with output
relays 0500 through 0503.
• Direct output is not affected by the scan time.
KVNKA Chap 03.p65 08.3.11, 0:05 PM 197