KEYENCE Visual KV Series - Manual (Page 368)

8.2 Details
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8
Chapter 8 Programming Examples
Line No. Instruction Operand Line No. Instruction Operand
0000 LD 0000 0035 STA DM0003
0001 DIFU 1000 0036 CON
0002 CON 0037 LDA $0000
0003 AND 1000 0038 CON
0004 MPS 0039 STA DM0002
0005 AND 0001 0040 LD 2002
0006 LDA $1111 0041 LDA DM0002
0007 CON 0042 CON
0008 STA DM0000 0043 CMP $0000
0009 MPP 0044 CON
0010 ANB 0001 0045 AND 2010
0011 LDA $5555 0046 LDA DM0001
0012 CON 0047 CON
0013 STA DM0000 0048 STA DM0002
0014 LD 2002 0049 CON
0015 LDA DM0004 0050 LDA $0000
0016 CON 0051 CON
0017 CMP $0000 0052 STA DM0001
0018 CON 0053 LD 2002
0019 AND 2010 0054 LDA DM0001
0020 LDA DM0003 0055 CON
0021 CON 0056 CMP $0000
0022 STA DM0004 0057 CON
0023 CON 0058 AND 2010
0024 LDA $0000 0059 LDA DM0000
0025 CON 0060 CON
0026 STA DM0003 0061 STA DM0001
0027 LD 2002 0062 CON
0028 LDA DM0003 0063 LDA $0000
0029 CON 0064 CON
0030 CMP $0000 0065 STA DM0000
0031 CON 0066 LD 0002
0032 AND 2010 0067 @LDA $0000
0033 LDA DM0002 0068 CON
0034 CON 0069 @STA DM0004
The data once fetched is written into DM0004, DM0003, ..., DM0000 in this order. At
the unloading timing, unload the data from DM0004 and shifts the data value to the
next DM.
The ON/NG judgement and unloading timings can be used in asynchronous pro-
grams.
Ladder diagram
Coding
2002
LDA
$0000
STA
DM0004
LDA
DM0003
CMP
$0000 2010
LDA
DM0004
STA
DM0003
0000
LDA
$1111 1000 0001
STA
DM0000 1000
DIFU
Transfers $1111 to DM0000.
LDA
$5555 0001
STA
DM0000
Transfers $5555 to DM0000.
OK/NG judgement OK/NG judgement timing
2002
LDA
$0000
STA
DM0003
LDA
DM0002
CMP
$0000 2010
LDA
DM0003
STA
DM0002
2002
LDA
$0000
STA
DM0002
LDA
DM0001
CMP
$0000 2010
LDA
DM0002
STA
DM0001
2002
LDA
$0000
STA
DM0001
LDA
DM0000
CMP
$0000 2010
LDA
DM0001
STA
DM0000
0002
LDA
$0000
STA
DM0004
Unloading timing Transfers $0000 to DM at unloading timing.
Compares the DM value to $0000.
If it is equal to $0000, transfers the
value of the previous DM No. and
then writes $0000 into the current DM No.
KVNKA Chap 08.p65 08.3.11, 0:12 PM 344