KEYENCE Visual KV Series - Manual (Page 375)

8.2 Details
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1 8
Chapter 8 Programming Examples
Application of ORA instruction
■ Output of BCD 2-digit data
Converts the current value of counter C000 to BCD and sends 2 digits of BCD data
to output relays 7500 to 7507.
However, retain ON/OFF of 7508 to 7515 which are loaded.
Ladder diagram
Coding
■ Separate input of 2-digit BCD
Fetches only 2 digits of the BCD digital switch (7000 to 7003 for the 1st digit, 8000 to
8003 for the 2nd digit) and sets it as the counter value.
Ladder diagram
Coding
➮ Refer to p. 3-161.
#00099
0001
C000
0000
2002
2002
STA
DM0000
ANDA
$FF00
2002
ANDA
$00FF
TBCD
STA ORA
DM0000 7500
LDA
7500
LDA
C000
Sets C000.
Writes data of 7008 to 7015 into DM0000.
ORs the data in the internal register and the
DM0000 data and sends the ORed data to 7500
to 7515.
Converts the current value of C000 to BCD and
retains the low-order 2 digits of BCD in the
internal register.
Line No. Instruction Operand Line No. Instruction Operand
0000 LDB 0000 0009 LDA C000
0001 C 000 #00099 0001 0010 CON
0002 LD 2002 0011 TBCD
0003 LDA 7500 0012 CON
0004 CON 0013 ANDA $00FF
0005 ANDA $FF00 0014 LD 2002
0006 CON 0015 ORA DM0000
0007 STA DM0000 0016 CON
0008 LD 2002 0017 STA 7500
#00099
0001
C001
0000
2002
2002
STA
DM0000
ANDA
$000F
2002
ANDA
$000F
LDA
7000
LDA
8000
SLA
#04
ORA
DM0000
STA
C001
TBIN
Line No. Instruction Operand Line No. Instruction Operand
0000 LDB 0000 0010 CON
0001 C 001 #00099 0001 0011 ANDA $000F
0002 LD 2002 0012 LD 2002
0003 LDA 7000 0013 SLA #04
0004 CON 0014 CON
0005 ANDA $000F 0015 ORA DM0000
0006 CON 0016 CON
0007 STA DM0000 0017 TBIN
0008 LD 2002 0018 CON
0009 LDA 8000 0019 STA C001
KVNKA Chap 08.p65 08.3.11, 0:12 PM 351