Mitsubishi Electric MELSEC FX3U Programming Manual page 295

FX /FX /FX Series Programmable Controllers
3G 3U 3UC
Programming Manual - Basic & Applied Instruction Edition
2. 32-bit operation (DDIV and DDIVP)
[ +1,
S S
1 1
[ +1, ]), and the remainder is transferred to [
D D
Command
input
FNC 23
DDIV
Dividend
BIN
S
[
1
32 bits
• Four devices in total starting from
remainder). Make sure that these four devices are not used for another control.
• The most significant bit of each data indicates the sign (positive: 0 or negative: 1), and data are divided
algebraically.
5500 ÷ (−540) = −10 (quotient) ... 100 (remainder)
• When a constant (K) is specified in [
the binary format.
Related devices
1. Relationship between flag operation and numeric value
Device
M8304*1
M8306*1
*1. Available in all FX
Cautions
1. Operation result
• The most significant bit of the quotient and remainder indicates the sign (positive: 0, negative: 1)
respectively.
• The quotient is negative when either the dividend or divisor is negative.
The remainder is negative when the dividend is negative.
2. Device specified as
• The remainder is not obtained when a bit device is specified with digit specification.
• In a 32-bit operation (by DDIV or DDIVP), Z cannot be specified as
Error
• When the divisor
• A operation error results when the operation result is over 32,767 (16-bit operation) or 2,147,483,647 (32-
bit operation). (Turns the carry flag ON.)
] indicates the dividend, [
S
S S D
1 2
Divisor
BIN
S ] ÷ [ S S
+1, +1,
1 2 2
32 bits
are occupied to store the operation result (quotient and
D
S
1
Name
ON : When the operation result is 0.
Zero
OFF : When the operation result is a number other than 0.
ON : Carry flag operates when the operation result is over 32,767 (16-bit opera-
tion) or2,147,483,647 (32-bit operation).
Carry
OFF : When the operation result is less than 32,767 (16-bit operation) or
2,147,483,647 (32-bit operation).
PLCs and FX
3G 3U
D
is "0", an operation error is caused and the instruction is not executed.
S
2
10 Arithmetic and Logical Operation (+, −, ×, ÷) – FNC 20 to FNC 29
+1, ] indicates the divisor, the quotient is transferred to
S
2 2
+3,
D D
Quotient Remainder
BIN
→ [ D D D
] +1, ] ... [
32 bits 32 bits
+1, ] or [ +1,
S S S
1 2
Description
/FX PLCs Ver. 2.30 or later.
3UC
10.4 FNC 23 – DIV / Division
+2].
BIN
D
+3, +2]
], it is automatically converted into
2
.
D
1
2
3
4
5
6
7
8
9
10
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