Dials & Gauges Blockset

Connecting Blocks in a Model

Before you connect a Dials & Gauges Blockset block with other blocks, you should know whether it is meant to be an input device (with an output connection), or an output device (with an input connection). Dials & Gauges Blockset blocks are initially drawn with both an inport and an outport, but Simulink removes unused ports when the simulation starts running or when you update the block diagram.

To determine whether a Dials & Gauges Blockset block is meant to be used as an input or output device, right-click on the block and select the Block Parameters option.

Note    If you built your own ActiveX control by customizing the generic ActiveX Control block, then another way to display the custom block's Block Parameters dialog box is to double-click on the border of the block.

In the Block Parameters dialog box, the Connections field determines the type of connection the block currently uses:

• Input indicates that the block has an inport and receives a signal. The Input property parameter indicates the block's property whose value is changed by the input.
• Output indicates that the block has an outport and outputs a signal. The Output property parameter indicates the block's property whose value is output.
• Both indicates that the block has an inport and an outport and receives and outputs a signal.
• Neither indicates that the block has neither an inport nor an outport.

To specify a connection different from the block's default setup, change the block's Connection setting and make sure that the Input property and Output property fields are filled in with the appropriate property name. See Summary of Dialog Box Fields and Check Boxes for information about the other fields and check boxes. You can also use the Help button to find out about other parameters.

Using Instrumentation in a Model

Modifying ActiveX Control Properties