Toshiba V Series User Manual page 61

(2) Classification of variables by the definition method
Two types of variables are provided. One type of variables is that the user can define their
names and types freely (user variables) and the other type is the variables whose names
and data types are already defined (standard variables).
The variables that the user can define are instance variables and temporary variables of
local variables, user variables of controller global variables, and station global variables.
Variable types are shown in the table below.
Notation
BOOL
INT
DINT
UINT
REAL
TIME
WORD
DWORD
(3) Classification by usage
Controller global variables and local variables are classified as described below
depending on their usage.
• Classification of controller global variables
Controller global variables are classified into system variables which are used to refer to
time information and error information, tag instrument variables which are used to refer
to parameters and data of tag instruments, user variables which can be used freely by
the user, and so on.
• Classification of local variables
Local variables are classified into temporary variables which are used temporarily when
program is executed and instance variables which are used in a prearranged manner
(statically) regardless whether program is executed or not.
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Table 3-3 Variable Types
Type Bits
Boolean type 1
Integer type 16
Double precision 32
integer type
Unsigned integer type 16
Real number type 32
Timer type 32
Word type 16
Double word type 32
Effective data range
0, 1
− 32768 to 32767
− 2147483648 to 2147483647
0 to 65535
38
− 3.40282 × 10 to 3.40282 ×
38
10
Data type conforms to IEEE754.
0 to 2147483647ms
(24d20h31m23s647ms)
0000 to FFFF
00000000 to FFFFFFFF
3.2 Variables
3
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