Mitsubishi FX3U Series Programming Manual page 316

FX /FX Series Programmable Controllers
3U 3UC
Programming Manual - Basic & Applied Instruction Edition
Related devices
Device
M8020
M8021 Borrow flag
Program example
1. Arithmetic operations by binary floating point operations
The sequence program shown below is constructed as follows:
1) Calculation example
(D 0)
16-bit binary
(1)
(D 21, D 20)
Binary floating
point operation
2) Sequence program
M8000
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
314
→ For the method of the zero and borrow flags, refer to Subsection 6.5.2.
Name
Zero flag Turns ON when the value is true "0".
Turns ON when the floating point is rounded down.
÷
(X017 to X010)
2-digit BCD
(2) (5)
(D 22)
BIN
(3)
(D 25, D 24)
Binary floating
point operation
(D 29, D 28)
Binary floating
point operation
FNC 49
D 0 D 20
FLT
FNC 19
K2X010 D 22
BIN
FNC 49
D 22 D 24
FLT
FNC 123
K345 K 10
DEDIV
FNC 123
D 20 D 24
DEDIV
FNC 122
D 28 D 26
DEMUL
FNC 118
D 10 D 12
DEBCD
FNC 129
D 10 D 14
DINT
12.10 FNC 49 – FLT / Conversion to Floating Point
Description
× K34.5
(6)
(4)
(D 27, D 26)
Binary floating
point operation
(D 0) → (D21, D20)
BIN Binary floating point operation
(X017 to X010) → (D22)
BCD
(D22) → (D25, D24)
BIN Binary floating point operation
K345 ÷ K 10 → (D27, D26)
D 26
(D21, D20) ÷ (D25, D24) → (D29, D28)
D 28 Binary floating point
division
(D29, D28) × (D27, D26) → (D11, D10)
D 10
Binary floating point multiplication
(D11, D10)
Binary floating
point operation
(D11, D10)
Binary floating
point operation
12 Data Operation – FNC 40 to FNC 49
(D 11, D 10) Binary floating point
operation
(7)
(D 13, D 12)
Scientific notation operation
for monitoring
(8)
(D 15, D 14)
32-bit binary integer
BIN
Binary floating point operation
Binary floating point
operation
→ (D13, D12)
Scientific notation operation
for monitoring
→ (D15, D14)
32-bit binary integer