Define a tag component Chapter 6
Rockwell Automation Publication 1756-RM084S-EN-P - March 2015 109
Attribute Description
DataType Type of tag.
Atomic types: BOOL, SINT, INT, DINT, LINT, REAL
String types: STRING
Predefined types such as: AXIS_CONSUMED, AXIS_GENERIC_DRIVE, AXIS_SERVO, AXIS_SERVO_DRIVE, AXIS_VIRTUAL,
CAM, CAM_PROFILE, CONTROL, COORDINATE_SYSTEM, COUNTER, MESSAGE, MOTION_GROUP
Equipment phase types: PHASE, PHASE_INSTRUCTION
Safety types: CONNECTION_STATUS and unique types for each safety instruction
Function block types: unique type for each function block
Sequential function chart: SFC_ACTION, SFC_STEP, SFC_STOP
User-defined data types.
Add-On Instruction defined data types.
Module-defined data types.
AliasFor L5X only. Name of the base tag that the alias tag references.
Specify tag<specifier>
Where the specifier is a bit (.bitnumber), array element ([element]), or structure member (.membername) of the tag, or
any combination such as [7].Input.0.
Dimensions L5X only. The number of elements within the array dimension.
For example [5, 10, 2].
Class
Specify the class of the tag. This attribute applies only to safety controller projects. Type Standard or Safety.
Radix
Specify the display style as decimal, hex, octal, binary, exponential, float, ASCII, or date/time. (LINT only).
PLCMappingFile If this tag is mapped to a PLC controller, specify the file number, which can be any positive number.
For L5X, this attribute is on the <ProduceInfo> element.
PLC2Mapping If this tag is mapped to a PLC-2 file, set this attribute to 1. If this tag is not mapped to a PLC-2 file, set this attribute to 0.
For L5X, this attribute is on the <ProduceInfo> element.
ProgrammaticallySend
EventTrigger
If the project programmatically sends an event trigger, set this attribute to 1. Otherwise, set this attribute to 0.
For L5X, this attribute is on the <ProduceInfo> or <ConsumeInfo> element.
Unicast
Allow connections to be unidirectional, rather than bidirectional. Type Yes or No.
UnicastPermitted
Specify when unicast connections can be received. Type Yes or No.
For L5X, this attribute is on the <ProduceInfo> element.
Usage
• Specify how an Equipment Phase program uses a tag. This attribute applies only to tags that are program-scoped to
an Equipment Phase program. Type Input, Output, or Normal.
• Specify how a parameter is used. Type Input, Output, InOut, or Public.
Sequencing Specify if the parameter can be seen by the FactoryTalk® Batch Server. Only Input and Output parameters can be used by
a sequence. Usage is Input or Output.
ExternalAccess
Specify the external access, outside of the controller, to the tag. Specify Read/Write, Read Only, or None.
Max (optional) User specified maximum value for the tag. Only valid for tag with non-Boolean atomic datatype.
Min (optional) User specified minimum value for the tag. Only valid for tag with non-Boolean atomic datatype.
Constant
Specify whether the tag value is a constant value or it can change. For L5K, specify yes for a constant value or no for a
dynamic value. For L5X, specify true or false.
