KEYENCE Visual KV Series - Manual (Page 297)

6.1 Interrupt Instructions
KV
-300
KV-10/80
3-273
1 6
Chapter 6 Interrupts, High-speed Counters, Positioning Control
Interrupt routine coding
Example 2
Features of INT0003
Upon generation of interrupt by INT0003, the CTH1 current value is automatically
transferred to TM30.
Interrupt generated by any of INT0000 to INT0002 is executed at the rising edge of
the input signal. Interrupt generated by INT0003 can be executed either at the rising
or falling edge of the input signal.
In the example program below, pulse width of input 0003 is measured.
Coding
0003
Pulse width
ON
OFF
2206(OFF) 2206(ON) 2008
1 EI
$0000
LDA
2200
STA
DM0000
STA
2002
2206
2206
TM30
LDA
TM02
STA
TM30
LDA
TM02
SUB
DM0000
STA
CTH1
2200
END
INT
0003
KEEP
SET
2206
RES
RETI
ENDH
2
3
4
(a)
(b)
Relay No. ON OFF
2206 Executes interrupts at falling edge of Executes interrupts at rising edge of
input pulse to 0003. input pulse to 0003.
INT / RETI
Line No. Instruction Operand Line No. Instruction Operand
0000 LD 2008 0008 OUT 0500
0001 EI 0009 END
0002 CON 0010 INT 0000
0003 SET 2813 0011 LD 2002
0004 LD 1000 0012 OUT 1000
0005 OR 0500 0013 RETI
0006 TMR 000 #00020 0014 ENDH
0007 ANB T000
Line No. Instruction Operand Line No. Instruction Operand
0000 LD 2008 0014 CON
0001 EI 0015 STA TM02
0002 CON 0016 CON
0003 LDA $0000 0017 LD 2206
0004 CON 0018 LDA TM30
0005 STA 2200 0019 CON
0006 CON 0020 SUB TM02
0007 STA DM0000 0021 CON
0008 LD 2002 0022 STA DM0000
0009 CTH 1 2200 0023 CON
0010 END 0024 KEEP 2206
0011 INT 0003 0025 RETI
0012 LDB 2206 0026 ENDH
0013 LDA TM30
KVNKA Chap 06.p65 08.3.11, 0:10 PM 273