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FX3G/FX3U/FX3UC Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
10 Arithmetic and Logical Operation (
+
,
−
,
×
,
÷
) – FNC 20 to FNC 29
10.4 FNC 23 – DIV / Division
10.4 FNC 23 – DIV / Division
Outline
This instruction executes division by two values to obtain the result (A ÷ B = C ... ).
→ For the floating point division instruction EDIV (FNC123), refer to Section 18.11.
1. Instruction format
2. Set data
3. Applicable devices
S1:This function is supported only in FX3U/FX3UC PLCs.
S2: Available only in 16-bit operations (Not available in 32-bit operations)
Explanation of function and operation
1. 16-bit operation (DIV and DIVP)
indicates the dividend, indicates the divisor, the quotient is transferred to , and the remainder is
transferred to +1.
• The most significant bit of each data indicates the sign (positive: 0 or negative: 1), and data are divided
algebraically.
36 ÷ (−5) = −7 (quotient) ... 1 (remainder)
• Two devices in total starting from are occupied to store the operation result (quotient and remainder). Make
sure that these two devices are not used for another control.
• When a constant (K) is specified as or , it is automatically converted into the binary format.
Operand type Description Data type
Data for division or word device number storing data (dividend) 16- or 32-bit binary
Data for division or word device number storing data (divisor) 16- or 32-bit binary
Head word device number storing the division result (quotient and remainder) 32- or 64-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
33333333S1 3333
33333333S1 3333
3333333S1
S
2
3
DDIV
DDIVP
Mnemonic Operation Condition
P
FNC 23
DIV
D
16-bit Instruction
7 steps
DIV
DIVP
Mnemonic Operation Condition
Continuous
Operation
Pulse (Single)
Operation
32-bit Instruction
13 steps
Continuous
Operation
Pulse (Single)
Operation
S
1
S
2
D
S
1
S
2
D
S
1
S
2
D
D
Dividend Divisor Quotient Remainder
BIN BIN BIN BIN
( )
÷
( )
→
( ) ... ( +1)
16 bits 16 bits 16 bits 16 bits
Command
input
FNC 23
DIV
D
S
1
S
2
D
S
1
S
2
D
D
S
1
S
2