Creating Local Tags
Use the Add-On Instruction Definition Editor to create the local tags for your instructions. Local tags contain data that will be used by your Add-On Instruction but that you do not want exposed to the user of your instruction.
Local tags do not appear in the data structure for an Add-On Instruction because they are hidden members.
Follow these steps to define the local tags for your instruction.
1. In the Controller Organizer, right-click an instruction and choose Open Definition.
2. Click the Local Tags tab and type a name for a new tag and select a data type.
You cannot use these data types for local tags - ALARM_ANALOG, ALARM_DIGITAL, MESSAGE, or any Motion data types, for example Axis or MOTION_GROUP. To use these type of tags in your Add-On Instruction, define an InOut Parameter. Local tags also are limited to single dimension arrays, the same as User-Defined Data Types.
3. Set the default values.
Default values are loaded from the Add-On Instruction definition into the tag of the Add-On Instruction data type when it is created or any time a new tag is added to the Add-On Instruction.
4. Set the display style.
5. Type a description, a maximum of 512 characters.
6. Repeat for additional local tags.
Local tags do not appear in the data structure for an Add-On Instruction because they are hidden members.
Follow these steps to define the local tags for your instruction.
1. In the Controller Organizer, right-click an instruction and choose Open Definition.
2. Click the Local Tags tab and type a name for a new tag and select a data type.
You cannot use these data types for local tags - ALARM_ANALOG, ALARM_DIGITAL, MESSAGE, or any Motion data types, for example Axis or MOTION_GROUP. To use these type of tags in your Add-On Instruction, define an InOut Parameter. Local tags also are limited to single dimension arrays, the same as User-Defined Data Types.
3. Set the default values.
Default values are loaded from the Add-On Instruction definition into the tag of the Add-On Instruction data type when it is created or any time a new tag is added to the Add-On Instruction.
4. Set the display style.
5. Type a description, a maximum of 512 characters.
6. Repeat for additional local tags.
0 comments :