Conversion Of Numeric Values - Mitsubishi Electric MELSEC FX3U Programming Manual

FX /FX /FX Series Programmable Controllers
3G 3U 3UC
Programming Manual - Basic & Applied Instruction Edition
6. Real numbers (floating point data)
FX , FX and FX
3G 3U
In floating point operations, binary floating points (real numbers) are used, and scientific notation (real
numbers) are used for monitoring them.
5.1.2

Conversion of numeric values

Numeric values handled in FX PLCs can be converted as shown in the table below:
Decimal number
(DEC)
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
99
Major applications
Decimal number
(DEC)
Constants (K) and
numbers of internal
devices except I/O
relays
5.1 Numeric Values Handled in PLCs (Octal, Decimal, Hexadecimal and Real Numbers)
PLCs have the floating point operation function to achieve high accuracy operation.
3UC
Hexadecimal number
Octal number (OCT)
0
1
2
3
4
5
6
7
10
11
12
13
14
15
16
17
20
143
Hexadecimal number
Octal number (OCT)
Numbers of internal
Constants (H)
I/O relays
5 How to Specify Devices and Constants to Instructions
Binary number (BIN)
(HEX)
00 0000
01 0000
02 0000
03 0000
04 0000
05 0000
06 0000
07 0000
08 0000
09 0000
0A 0000
0B 0000
0C 0000
0D 0000
0E 0000
0F 0000
10 0001
63 0110
Binary number (BIN)
(HEX)
Processing inside
PLC
BCD
0000 0000 0000
0001 0000 0001
0010 0000 0010
0011 0000 0011
0100 0000 0100
0101 0000 0101
0110 0000 0110
0111 0000 0111
1000 0000 1000
1001 0000 1001
1010 0001 0000
1011 0001 0001
1100 0001 0010
1101 0001 0011
1110 0001 0100
1111 0001 0101
0000 0001 0110
0011 1001 1001
BCD
BCD digital switches
and seven-segment
display units
159
1
2
3
4
5
6
7
8
9
10