Inserting Broadcast Links

Cyclic data broadcast links transmit information from a source node to all other nodes present on a network. Broadcast links can be inserted in the Link Architecture view in a number of ways.

To insert a broadcast link graphically

1. In the Link Architecture view, click and hold down the left mouse button on the source node.

2. Move the cursor to the broadcast symbol at the top of the view and release the mouse button.

While holding down the mouse button, the data link appears as a dotted line showing the direction of the link. When you release the mouse button the data link becomes a solid line still showing the direction of the link.

Alternatively,

In the Link Architecture view, select the source node and do one of the following:

From the Insert menu, choose Broadcast.
In the View toolbar, press

The broadcast link appears as a solid arrow pointing from the source node to the broadcast item.

Defining Cyclic Data

After having inserted data links or broadcast links using the Link Architecture view, you need to define the sets of registers which are to be transmitted from the source to the destination. The registers are defined in the Cyclic Data view.

Cyclic data is always transmitted from one set of registers on a source node and received into a set of registers on the destination node. The set of registers transmitted will always be consecutive and the same number of registers is specified for the transmitter and receiver, e.g. node X will transmit from _R00% through _R03% which will be received into _S00% through _S03% on node Y. Different targets have different sets of registers available for use with CTNet cyclic data.

For each link between nodes shown in the Link Architecture view, a number of data links can be defined for transmission at slow or fast priority. Each data link can transmit up to 20 registers. The number of data links for each connection between nodes is only limited by the processing power of the transmitter and receiver. Acyclicdatalinkhasthefollowingproperties:

See the CTNet User Guide for more information.

To define a cyclic data entry

You define cyclic data links in the Cyclic Data view.

1. From the View menu, choose Cyclic Data.

The cyclic data view appears. In the following example the registers being transmitted from node 2 to node 1 on network CTNet0 are shown. Register _R00% on node 2 is being transmitted into _S00% on node 1. The lefthand side of the view displays the selection matrix with the cell joining source node 2 to destination node 1 highlighted in blue.

To enter register information for a data link in the Cyclic Data view

1. In the selection matrix on the left of the Cyclic Data view, click the cell corresponding to the source/ destination node for which to define a cyclic data link.

The link list holding the cyclic data definitions for the selected source/ destination appears.

2. Click on the link list, then from the Insert menu, choose Cyclic Data.

3. Enter the required information.

To edit an existing cyclic data entry

1. In the selection matrix of the Cyclic Data view, click the cell corresponding to the source/ destination node for which to define a cyclic data link.

The link list holding the cyclic data definitions for the selected node appears.

2. In the link list, select the cyclic data definition to edit.

3. From the Edit menu, choose Edit Contents.

4. Make the necessary changes and press ENTER.