258
FX3G/FX3U/FX3GC/FX3UC Series
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
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
S: This function is supported only in FX3U/FX3UC PLCs.
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 ranging 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
XYMTCSD.b KnX KnY KnM KnS T C D R U\G VZModifyKH E ""P
33333333 S 33 3
3333333 S 33 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
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