Rockwell Automation 1788-FFCT NI-FBUS Configurator User Manual - Manual (Page 38)

Publication 1788-UM052B-EN-P - April 2002
4-10 Using the NI-FBUS Configurator
Function Blocks
As stated in the Blocks and Parameters section of Chapter 1, function
blocks contain an algorithm and several parameters to control a
process. The input and output parameters of this function block are
displayed on the block, as in Figure 4.4.
Figure 4.4 Input and Output Parameters on a Function Block
The pointers on the outside of the parameters show the direction of
the data flow. By default, the block tag is at the top, the inputs are on
the left, and the outputs are on the right.
You can resize the block and move the tags relative to the block.
To change the tag, double-click the block tag to open the edit box, or
right-click and select Set Tag from the drop-down list.
Adding Function Blocks
To add function blocks, complete the following steps:
1. To open the Function Block Application Editor, double-click the
Function Block Application Editor icon in the Project window.
2. Drag blocks from the Project window to the Function Block
Application Editor until all the blocks you want to use are in the
Function Block Application Editor. A block looks like the
following while you drag it from the Project window:
3. If you want to change the names of the blocks, double-click a
tag or use the Text tool on the Function Block Application
Editor toolbar.