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5.1 Basic Data Type

5.1.1 Bit​

Bool--BOOL​

  • Bit: "Bit" is the basis of computer operations
FormatValue rangeInput value example
BooleanFALSE or TRUE
BOOL#0 or BOOL#1
BOOL#FALSE or
BOOL#TRUE		TRUE
BOOL#1
BOOL#TRUE
Unsigned integer (decimal)0 or 11
Binary2#0 or 2#12#0
Hexadecimal16#0 or 16#116#1
warning
  • The length of our BOOL type variable is 8bit or 1byte;
  • Logically BOOL length is 1bit, while in software storage BOOL length is 1byte;
  • Values ​​include TRUE and FALSE, and the default value of BOOL type variables is FALSE

5.1.2 Bit string​

Byte--BYTE​

  • Byte: "Byte" is the unit of transmitting information through the network (or storing information on the hard disk or memory)
FormatValue rangeInput value example
IntegerSigned integer: -128 to +127
Unsigned integer: 0 to 255		15
BYTE#15
Binary2#0 to
2#1111_1111		2#0000_1111
BYTE#2#0000_1111
Hexadecimal16#0 to
16#FF		16#0F
BYTE#16#0F
warning
  • The length is 8 bits. Byte type variables cannot exceed the value range, otherwise it will cause overflow.

Word--WORD​

FormatValue rangeInput value example
Integer0 to 65535666
WORD#666
Binary2#0 to
2#1111_1111_1111_1111		2#1111_0000_1111_0000
WORD#2#1111_0000_1111_0000
Hexadecimal16#0 to 16#FFFF16#F0F0
WORD#16#F0F0

Double word--DWORD​

FormatValue rangeInput value example
Integer0 to 4294967295156
DWORD#156
Binary2#0 to
2#1111_1111_1111_1111_1111_1111_1111_1111		2#0000_1111_0000_11 11_0000_1111_0000_1111
DWORD#2#0000_0000_1111_0000_1111_1111_0000_1111
Hexadecimal16#0000_0000 to
16#FFFF_FFFF		16#00F0_FF0F
DWORD#16#00F0_FF0F

Long word--LWORD​

FormatValue rangeInput value example
IntegerSigned integer:
-9_223_372_036_854_775_808 to
+9_223_372_036_854_775_807
Unsigned integer:
0 to 18_446_744_073_709_551_615		26_123_590_360_715
LWORD#+26_123_590_360_715
Binary2#0 to
2#1111_1111_1111_1111_1111_1111_1111_1111_1111_1111_1111_1111_1111_1111_1111_1111		2#0000_0000_0000_0000_0000_1011_1110_0001_0010_1111_0101_0010_1101_1110_1000_1011
LWORD#2#0000_0000_0000_0000_0000_1011_1110_0001_0010_1111_0101_0010_1101_1110_1000_1011
Hexadecimal16#0000_0000 to
16#FFFF_FFFF_FFFF_FFFF		16#0000_0000_5F52_DE8B
LWORD#16#0000_0000_5F52_DE8B

5.1.3 Integer​

Short integer type--SINT​

FormatValue rangeInput value example
Signed integer-128 to
127		66
SINT#44
Binary2#0 to
2#0111_1111		2#0010_1100
SINT#2#0010_1100
Hexadecimal16#0 to 16#7F16#2C
SINT#16#2C

Unsigned short integer type--USINT​

FormatValue rangeInput value example
Unsigned integer0 to 25577
Binary2#0 to 2#1111_11112#0100_1110
Hexadecimal16#0 to 16#FF16#4E
USINT#16#4E

Integer type--INT​

FormatValue rangeInput value example
Signed integer-32768 to 32767333
INT#333
Binary2#0 to
2#0111_1111_1111_1111		2#0000_1110_1100_1001
INT#2#0000_1110_1100_1001
Hexadecimal16#0 to 16#7FFF• 16#0EC9
INT#16#0EC9

Unsigned integer type--UINT​

FormatValue rangeInput value example
Unsigned integer0 to 65535295
UINT#295
Binary2#0 to
2#1111_1111_1111_1111		2#1111_1111_0000_1111
UINT#2#1111_1111_0000_1111
Hexadecimal16#0 to 16#FFFF16#FF0F
UINT#16#FF0F

Double integer type--DINT​

FormatValue rangeInput value example
Signed integer-2_147_483_648 to
+2_147_483_647		125790
DINT#125
Binary2#0 to
2#0111_1111_1111_1111_1111_1111_1111_1111		2#0000_0000_0000_0001_1110_1011_0101_1110
DINT#2#0000_0000_0000_0001_1110_1011_0101_1110
Hexadecimal16#0 to
16#7FFF_FFFF		16#0001_EB5E
DINT#16#0001_EB5E

Unsigned double integer type--UDINT​

FormatValue rangeInput value example
Unsigned integer0 to 4_294_967_2954_042_322_160
UDINT#4_042_322_160
Binary2#0 To
2#1111_1111_1111_1111_1111_1111_1111_1111		2#1111_0000_1111_0000_1 111_0000_1111_0000
UDINT#2#1111_0000_1111_0000_1111_0000_1111_0000
Hexadecimal16#0 to 16#FFFF_FFFF16#F0F0_F0F0
UDINT#16#F0F0_F0F0

Long integer type--LINT​

FormatValue rangeInput value example
signed integer-9_223_372_036_854_775_808 to
+9_223_372_036_854_775_807		154
LINT#+154_325_790_816_159
Binary2#0 to
2#0111_1111_1111_1111_1111_1111_1111_1111_1111_1111_1111_1111_1111_1111_1111_1111		2#0000_0000_0000_0000_1000_1100_0101_1011_1100_0101_1111_0000_1111_0111_1001_1111
LINT#2#0000_0000_0000_0000_1000_1100_0101_1011_1100_0101_1111_0000_1111_0111_1001_1111
Hexadecimal16#0 to
16#7FFF_FFFF_FFFF_FFFF		16#0000_8C5B_C5F0_F79F
LINT#16#0000_8C5B_C5F0_F79F

Unsigned long integer type--ULINT​

FormatValue rangeInput value example
Unsigned integer0 to 18_446_744_073_709_551_615154
ULINT#154_325_790_816_159
Binary2#0 To
2#1111_1111_1111_1111_1111_1111_1111_1111_1111_1111_1111_11 11_1111_1111_1111_1111		2#0000_0000_0000_0000_1000_1100_0101_1011_1 100_0101_1111_0000_1111_0111_1001_1111
ULINT#2#0000_0000_0000 _0000_1000_1100_0101_1011_1100_0101_1111_0000_1111_0111_1001_1111
Hexadecimal16#0 to
16#FFFF_FFFF_FFFF_FFFF		16#0000_8C5B_C5F0_F79F
ULINT#16#0000_8C5B_C5F0_F79F

5.1.4 Real number​

Real number--REAL​

FormatValue rangeInput value example
Comply with IEEE754 standard±0.0
±1.175495e-38 to ±3.402823e+38		1.0e-5;REAL#1.0e-5
1.0;REAL#1.0

Long real number--LREAL​

FormatValue rangeInput value example
Comply with IEEE754 standard-1.7976931348623157e+308 to
-2.2250738585072014e-308
±0.0
+2.2250738585072014e-308 to
+1.7976931348623157e+308		1.0e-5; LREAL#1.0e-5
1.0; LREAL#1.0
warning
  • Single precision (REAL): 32 bits in total, of which S occupies 1 bit, E occupies 8 bits, and M occupies 23 bits
  • Double precision (LREAL): 64 bits in total, of which S occupies 1 bit, E occupies 11 bits, and M occupies 52 bits
  • Special values:
    • When the binary digits of E are all 1, and if the binary digits of M are all 0, then N represents infinity, if S is 1, it is negative infinity, and if S is 0, it is positive infinity;
    • When the binary digits of E are all 1 and the binary digits of M are not all 0, it means NAN (Not a Number), which means that this is not a legal real number or infinity, or the number has not been initialized.

5.1.5 String​

Single-byte character--CHAR​

FormatValue rangeInput value example
ASCII charactersASCII character set'A'
CHAR#'A'

String--STRING or STRING[N]​

warning
  • The STRING type of Baosky PLC is in the memory, and is actually an array with CHAR elements.
  • Baosky PLC allows subscripted access to CHAR elements of STRING type variables. The access starting point of string elements is 1
FormatValue rangeInput value example
ASCII string, including special charactersThe actual storage space occupied in the system=[N+2]BYTE;N is a constant, up to 254; the default value is N=80'Name'
STRING#'NAME'< br/> STRING#'' (The string is empty.)

5.1.6 Time data​

Duration--TIME​

FormatValue rangeInput value example
Signed durationT#-24d_20h_31m_23s_648ms to
T#+24d_20h_31m_23s_647ms
Precision in milliseconds		T#5MS
TIME#5MS

Date--DATE​

FormatValue rangeInput value example
Date (year-month-day)D#1970-1-1 ~ D#2106-02-06
The accuracy is days		D#1970-1-1

Time--TIME_OF_DAY​

FormatValue rangeInput value example
Time (hour:minute:second.millisecond)TOD#0:0:0.000 ~ TOD#23:59:59.999
The precision is milliseconds		TOD#0:0:0.000

Date and time--TIME_AND_DAY​

FormatValue rangeInput value example
Date and time (year-month-day-hour:minute:second)DT#1970-1-1-0:0:0 ~ DT#2106-02-06-06:28:15
Accuracy in seconds		DT#1970-1-1-0:0:0

Long duration--LTIME​

FormatValue rangeInput value example
Signed durationSigned long stored ns value
LT#-2^63~ (2^63-1)
Precision in nanoseconds		LTIME#0ns
warning
  • Bool: If the lowest bit in memory is set, the BOOL type variable is "true". If the lowest bit in memory is not set, the BOOL variable is FALSE.
  • Real number: Support for data type LREAL depends on the target device. Are 64-bit type LREALs converted to REALs at compile time (with possible information loss), or remain unchanged