KEYENCE Visual KV Series - 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 79