239
FX
3U
/FX
3UC
Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
9 Move and Compare – FNC 10 to FNC 19
9.9 FNC 18 – BCD / Conversion to Binary Coded Decimal
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FNC0
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-FNC0
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FNC1
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Ar
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9.9
FNC 18 – BCD / Conversion to Binary Coded Decimal
Outline
This instruction converts binary (BIN) data into binary-coded decimal (BCD) data.
Binary data is used in operations in PLCs. Use this instruction to display numeric values on the seven-
segment display unit equipped with BCD decoder.
1. Instruction format
2. Set data
3. Applicable devices
Explanation of function and operation
1. 16-bit operation (BCD and BCDP)
This instruction converts the binary (BIN) data of
into binary-coded decimal (BCD) data, and transfers
the converted BCD data to
.
• The data of
can be converted if it is within the range from K0 to K9999 (BCD).
• The table below shows digit specification for
and
.
Operand Type
Description
Data Type
Word device number storing the conversion source (binary) data
16- or 32-bit binary
Word device number of the conversion destination (binary-coded decimal) data
16- or 32-bit binary
Oper-
and
Type
Bit Devices
Word Devices
Others
System User
Digit Specification
System User
Special
Unit
Index
Con-
stant
Real
Number
Charac-
ter String
Pointer
X Y M T C S D
.b KnX KnY KnM KnS
T
C
D
R U
\G
V
Z Modify K
H
E
"
"
P
3
3
3
3
3 3 3 3
3
3 3
3
3
3
3
3 3 3 3
3
3 3
3
Number of digits
Data range
K1Y000
1
0 to 9
K2Y000
2
00 to 99
K3Y000
3
000 to 999
K4Y000
4
0000 to 9999
DBCD
DBCDP
Mnemonic
Operation Condition
16-bit Instruction
5 steps
BCD
BCDP
Mnemonic
Operation Condition
Continuous
Operation
Pulse (Single)
Operation
32-bit Instruction
9 steps
Continuous
Operation
Pulse (Single)
Operation
P
FNC 18
BCD
D
S
D
S
D
S
D
S
S
D
PLC
BCD (FNC 18)
Y014
Y010
Y004
Y000
Y017
Y013
Y007
Y003
BIN
BCD
…
…
…
…
…
…
…
…
FNC 18
BCD
When "K4Y000" is specified
S
D
Command
input
D