Appendix
FPΣ User's Manual
304
12.9 Data Types
FPWIN Pro provides elementary and user defined data types.
Elementary data types
Data Type Abbreviation Description Range
BOOL BOOL Boolean (1 bit) 0 (FALSE) or 1 (TRUE)
INTEGER INT Integer (16 bits) -32768–32767
UNSIGNED INTEGER UINT Unsigned integer (16 bits) 0–65535
DOUBLE INTEGER DINT Double integer (32 bits) -2147483648–2147483647
UNSIGNED DOUBLE
INTEGER
UDINT
Unsigned double integer (32
bits)
0–4294967295
REAL REAL Real number (32 bits)
-3.402823E
38
– -1.17549410E
-38
,
0, +1.17549410E
-38
–
+3.402823E
38
WORD WORD Bit string of length 16 (16 bits) 16#0–16#FFFF
DOUBLE WORD DWORD Bit string of length 32 (32 bits) 16#0–16#FFFFFFFF
TIME
1)
TIME Duration (32 bits)
T#0s–
T#248d3h13m56s470ms
DATE AND TIME
1)
DT Date and time of day (32 bits)
DT#2001-01-01-00:00:00–
DT#2099-12-31-23:59:59
TIME OF DAY
1)
TOD Time of day (only) (32 bits)
TOD#00:00:00–
TOD#23:59:59
DATE
1)
DATE Date (only) (32 bits)
DT#2001-01-01–
DT#2099-12-31
STRING
1)
STRING Variable-length character string Depending on PLC type
ARRAY ARRAY
Number of similar data
elements
Depending on PLC type
A data type has to be assigned to each variable.
1)
Internal representation of time and string data types
TIME In 10ms units
DATE AND TIME Seconds after DT#2001-01-01-00:00:00
TIME OF DAY Seconds after TOD#00:00:00
DATE Seconds after DT#2001-01-01
STRING Header with maximum and current number of characters followed by the characters
User defined data types
We differentiate between array and Data Unit Types (DUT). An array consists of several
elementary data types which are all of the same type. A DUT consists of several elementary
data types of different types. Each represents a new data type.
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