This table describes programming tips for you to reference when using Add-On Instructions.
| Topic | Description |
|---|
| Instruction Help | Use the instruction help to determine how to use the instruction in your code. |
| Ladder Rungs | In a ladder rung, consider if the instruction should be executed on a false rung condition. It may improve scan time to not execute it. |
| Data Types | A data type defined with the Add-On Instruction is used for the tag that provides context for the execution from your code. A tag must be defined of this Add-On Instructiondefined type on the call to the instruction. |
| Indexed Tag | You can use an indirect array indexed tag for the Instruction instance. One drawback is that you cannot monitor the Add-On Instruction by using this as a data context. |
| Passing Data | ·Input and Output parameters are passed by value. ·InOut parameters are passed by reference. |
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