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Mitsubishi MELSEC Q Series Programming Manual

Mitsubishi MELSEC Q Series
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6-80
FLT(P),DFLT(P)
(3) Due to the fact that 32-bit floating decimal point type real numbers are processed by simple
32-bit processing, the number of significant digits is 24 bits if the display is binary and
approximately 7 digits if the display is decimal.
For this reason, if the integer exceeds the range of 16777216 to 16777215 (24-bit BIN
value), errors can be generated in the conversion value.
As for the conversion result, the 25th bit from the upper bit of the integer is always filled with
1 and 26th bit and later bits are truncated.
Operation Error
(1) There are no errors associated with the FLT,DFLT instruction.
Integer
b31 b24 b23 b16
222030030
0 0 001 10100111 011
b15 b8
b7
b0
1 1 101 00011001 110
Result of operation
is 222030032.
Truncation
Always filled with 1
After conversion
372588919
0 0 010 11000110 101 0 1 000 00101110 111
Result of operation
is 372588928.
Truncation
Always filled with 1
b31 b24 b23 b16 b15 b8
b7
b0

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Mitsubishi MELSEC Q Series Specifications

General IconGeneral
SeriesMELSEC Q Series
TypeModular PLC
Programming SoftwareGX Works2, GX Works3
CategoryProgrammable Logic Controller (PLC)
I/O ModulesDigital I/O, Analog I/O, High-Speed Counter, Positioning
CommunicationEthernet, CC-Link
Programming LanguagesLadder Logic, Structured Text, Function Block Diagram, Sequential Function Chart, Instruction List
MemoryFlash Memory
I/O PointsUp to 4096 points (expandable with additional modules)
Power SupplyAC or DC power supply options available, depending on the base unit and modules.
MountingDIN rail mounting
Operating Temperature0°C to 55°C
Storage Temperature-25°C to 75°C
Humidity5% to 95% (non-condensing)
Vibration Resistance10 to 57 Hz, 0.075mm amplitude
WeightVaries depending on the module, from a few grams to several kilograms.
Shock Resistance147 m/s² (3 times each in X, Y, Z directions)

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