Data Types

There are multiple Data Types available for configuring parameters and tags within a project.

The Data Types are:

Boolean

Integer, 8 Bit Unsigned

Integer, 16 Bit

Integer, 16 Bit Unsigned

Integer, 16 Bit BCD

Integer, 32 Bit

Integer, 32 Bit BCD

String

*Constant

Float, 32 Bit

* With the exception of a constant data type, each of the above data types are also available as Array data types, one dimensional (1D) Arrays & two dimensional (2D) Arrays.

Data Type Definition:

Boolean: Also referred to as logical data types, having one of two values, True or False. The controller represents True as a logical “1” and False as a logical “0”. Boolean data types are used for all discrete I/O point tag names as well as internal tag names used for logic control.

Integer, 8 Bit Unsigned: Unsigned whole or natural numbers ranging from 0 to +255. Integer, 8 bit Unsigned data type is used for numerical tags where only positive variables will be used within a byte boundary.

Integer, 16 Bit: SignedIntegers ranging from -32768 to +32767. Integer, 16 bit data type is used for numerical tags where variables have the potential for negative or positive values.

Integer, 16 Bit Unsigned: Unsigned whole or natural numbers ranging from 0 to +65535. Integer, 16 bit Unsigned data type is used for numerical tags where only positive variables will be used.

Integer, 16 Bit BCD: Unsigned Binary Coded Decimal value ranging from 0 to +9999. Integer, 16 bit BCD data type is used for numerical tags where variables can only represent in the range from 0-9 within the half-byte boundary.
Integer, 32 Bit:SignedIntegers ranging from -2,147,483,648 to +2,147,483,647. Integer, 32 Bit data type is the default for most numerical tags where variables have the potential for negative or positive values.
Integer, 32 Bit BCD: Unsigned Binary Coded Decimal value ranging from 0 to +99999999. Integer, 32 bit BCD data type is used for numerical tags where variables can only represent in the range from 0-9 within the half-byte boundary.

Float, 32 Bit: IEEE formatted floating point number ranging from -3.39x1038 to +3.39x1038. Float data types are used for any numerical tag where greater precision * is required, values above 32-bit integer are needed, or where variables being read into the controller are in the IEEE format.
( * Float 32 has 24 bit precision meaning that if the number is between -16,777,216 to +16,777,216; the resolution is less than 1, which is better than integer. If the value is outside this range, the precision is not as good as the Integer, 32 Bit data type.)

String: ASCII or text representation which allocates one byte (8 bits) per character. String data types are used for all string manipulation, ASCII, email & LCD instruction where text is used.

Constant: A fixed value that is a valid replacement for a numeric or Boolean tag name in many instruction parameters (see the individual instruction help topics for more details). Constants can be integers (signed 32 bit), floating point or strings. When entering a constant, the field is defined by the data entered and assumes those ranges.
For example:
1 = 32 bit signed integer

1.0 = floating point

A = string
Pre-Defined Structure (PDS): Sets of pre-defined tags combined together foruse with specific ladder instructions or devices. See the Pre-defined Structures help topic for more details.
User Defined Structure (UDS): A collection of Data Types defined by the user. See the User Defined Structures help topic for more details.

Assigning a Data Type

By default, Tag Names of all data types are visible in the Tag Database. If you are looking for pre-existing tag names with specific data types, use the check boxes at the top of the Tag Database dialog to filter your view.

To assign a Data Type to a new tag name, open the Tag Database and select “Add Tags” button.

The Add Tags window gives you a list of all available data types when you are creating your tag names. Use the Data Type radio buttons to display Basic, 1D Array or 2D Array data types.

System ID	Address Range	Max Rows	Max Columns	Max Characters	Read/Write	Data Type
Cw	000001 - 999999	N/A	N/A	N/A	R/W	Discrete
AR1C	000001 - 999999	*65535	N/A	N/A	R/W	Discrete
AR2C	000001 - 999999	*65535	*65535	N/A	R/W	Discrete
DI	0.1.1.1 - 99.5.16.256	N/A	>N/A	N/A	Read Only	Discrete
DO	0.1.1.1 - 99.5.16.256	N/A	N/A	N/A	>R/W	Discrete
S16	000001 - 999999	N/A	N/A	N/A	R/W	Signed Int 16
AR1S16	000001 - 999999	65535	N/A	N/A	R/W	Signed Int 16
AR2S16	000001 - 999999	*65535	*65535	N/A	R/W	Signed Int 16
US16	000001 - 999999	N/A	N/A	N/A	R/W	Unsigned Int 16 (with Hex option in objects)
AR1US16	000001 - 999999	*65535	N/A	N/A	R/W	Unsigned Int 16 (with Hex option in objects)
AR2US16	000001 - 999999	*65535	*65535	N/A	R/W	Unsigned Int 16 (with Hex option in objects)
S32	000001 - 999999	N/A	N/A	N/A	R/W	Signed Int 32
AR1S32	000001 - 999999	*65535	N/A	N/A	R/W	Signed Int 32
AR2S32	000001 - 999999	*65535	*65535	N/A	R/W	Signed Int 3
AIS32	0.1.1.1 - 99.5.16.256	N/A	N/A	N/A	Read Only	Signed Int 32
AOS32	0.1.1.1 - 99.5.16.256	N/A	N/A	N/A	R/W	Signed Int 32
F32	000001 - 999999	N/A	N/A	N/A	RW	Floating PT 32
AR1F32	000001 - 999999	*65535	N/A	N/A	R/W	Floating PT 32
AR2F32	000001 - 999999	*65535	*65535	N/A	R/W	Floating PT 32
AIF32	0.1.1.1 - 99.5.16.256	N/A	N/A	N/A	Read Only	Floating PT 32
US8	000001 - 999999	N/A	N/A	N/A	R/W	Unsigned Int 16 (with Hex option in objects)
AR1US8	000001 - 999999	*65535	N/A	N/A	R/W	Unsigned Int 16 (with Hex option in objects)
AR2US8	000001 - 999999	*65535	*65535	N/A	R/W	Unsigned Int 16 (with Hex option in objects)
BCD16	000001 - 999999	N/A	N/A	N/A	R/W	BCD Int 16
AR1BCD16	000001 - 999999	*65535	N/A	N/A	R/W	BCD Int 16
AR2BCD16	000001 - 999999	*65535	*65535	N/A	R/W	BCD Int 16
BCD32	000001 - 999999	N/A	N/A	N/A	R/W	BCD Int 32
AR1BCD32	000001 - 999999	*65535	N/A	N/A	R/W	BCD Int 32
AR2BCD32	000001 - 999999	*65535	*65535	N/A	R/W	BCD Int 32
STR	000001 - 999999	N/A	N/A	128	R/W	ASCII String
AR1STR	000001 - 999999	*65535	N/A	128	R/W	ASCII String
AR2STR	000001 - 999999	N/A	N/A	128	R/W	ASCII String
SBR	000001 - 999999	N/A	N/A	N/A	Read Only	Discrete
SBRW	000001 - 999999	N/A	N/A	N/A	R/W	Discrete
SWR	000001 - 999999	N/A	N/A	N/A	Read Only	Signed Int 16
SWRW	000001 - 999999	N/A	N/A	N/A	R/W	Signed Int 16
SSTR	000001 - 999999	N/A	N/A	50	Read Only	ASCII String
MST	0.1.1.1 - 99.5.16.256	N/A	N/A	N/A	Read Only	Discrete

*Note: 2D arrays are limited to 65535 total cells (i.e., Number of Rows X Number of Columns must be less than or equal to 65535 cells).