Programmatically Access a Parameter

Follow these procedures for any language when you want to access an Add-On Instruction parameter that is not available on the instruction face by default.

The following procedures demonstrate how to use the Jog parameter of the Motor Starter Add-On Instructions.

Using the Jog Command in Ladder Diagram

The first rung sets the Jog bit of Motor_Starter_LD = Jog_PB.

Using the Jog Command In Function Block Diagram

Any parameter can be made visible or invisible except those defined as required. Required parameters are always visible. If the parameter is required, you will see it checked in the Properties dialog box.

1. Click Properties for the instruction.

2. Check the Vis checkbox of the Jog parameter to use it in your diagram.

3. Click OK.

4. Wire to the pin for the parameter.

Using the Jog Command in Structured Text