3.1 Basic Functionality
Registers
3-24
Data Types
There are various data types that you can use depending on the purpose of the application: bit, integer,
double-length integer, quadruple-length integer, real number, double-precision real number, and address.
*1. These data types cannot be used for indirect designation of motion programs.
*2. Conforms to IEEE754 standards.
Symbol Data Type Range of Values Data Size Description
B Bit 1 (ON) or 0 (OFF) −
Used in relay circuits and to
determine ON/OFF status.
W Integer
-32,768 to 32,767
(8000 to 7FFF hex)
1 word
Used for numeric operations.
The values in parentheses on
the left are for logical opera-
tions.
L
Double-length
integer
-2,147,483,648 to 2,147,483,647
(80000000 to 7FFFFFFF hex)
2 words
Used for numeric operations.
The values in parentheses on
the left are for logical opera-
tions.
Q
Quadruple-length
integer
*1
-9,223,372,036,854,775,808 to
9,223,372,036,854,775,807
(8000000000000000 to
7FFFFFFFFFFFFFFF hex)
4 words
Used for numeric operations.
The values in parentheses on
the left are for logical opera-
tions.
F Real number
± (1.175E - 38
to 3.402E + 38) or 0
2 words
Used for advanced numeric
operations.
*2
D
Double-precision
real number
*1
± (2.225E - 308 to 1.798E + 308) or 0 4 words
Used for advanced numeric
operations.
*2
A Address 0 to 2,097,152 −
Used only as pointers for
addressing.
The MP3000-series Machine Controller does not have separate registers for each data type. As shown
in the following figure, the same address will access the same register even if the data type is different.
For example, MB00001003, a bit address, and the MW0000100, an integer address, have different data
types, but they both access the same register, MW0000100.
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