RCP CL Comm Basic Stream Mixed Types Example
This example consists of two communication VIs: a server and a client. It demonstrates how to use the Basic Communication VIs from the RCP Toolkit to establish a connection between two VIs. For a detailed description of these VIs and how they operate, please refer to the RCP Basic Stream Client and Basic Stream Server help pages.
System Requirements
Please refer to the Rapid Control Prototyping (RCP) Toolkit System Requirements to run this example. This example does not require any other hardware.
Configuring the Example
Open the RCP CL Comm Basic Stream Client Mixed Types Example.vi and the RCP CL Comm Basic Stream Server Mixed Types Example.vi
under My Computer. To set up the example, select Show Block Diagram from the Window menu or press Ctrl+E while
the Front Panel is the active window for both the
RCP CL Comm Basic Stream Client
Mixed Types Example.vi
and RCP CL Comm Basic Stream Server Mixed Types Example.vi. Double click on the
CL Comm
Basic Stream Client
and CL Comm Basic Stream Server VI and ensure that the URI
for the server and client are the same, since both VIs run on the same machine. An example of a valid URI is tcpip://localhost:18000.
The RCP URIs are described on the Universal Resource Identifiers page.
Close the Block Diagram window after all changes to the VI have been made.
Running the Example
Click on the button for each VI or select from the menu to start each VI. A straight line with an amplitude of 0 will
appear in the Data Sent # and Data Received # graphs. Notice that the graph trace
is now moving in real time. In other words, the trace passes the 5-second mark after 5 seconds have passed.
On the server and/or client VI you can change the Signal to Send by changing the values of Signals #1, 2, or 3 in the top left
corner. The output of the server and client VIs can be visually seen in the Data Sent # graphs.
If Signal 3 - Array of Singles changes to
[1 2 3] graph Data Sent 3 will display this data. If the server is sending data, the client will be able to show the data sent
on the Data Received graph. For example if the server changes the value of Signal 1 to equal 4,
Data Received 1 on the client side will
display the change.
Before the server and/or client VIs are connected, but running,
the Data Received graphs take on the values defined
in the Default Output Value section in the top right corner.
When connection is established the data received values will change
to the values that the server and client VIs send.
For example if the server VI is running and its default output value for Signal 1 is 10 and
the client isn't connected, then the value in the server's Data Received graph is 10.
If the client VI then connects to the server and sends the
value 4, the server's Data Received graph will change to 4.
When the server and/or client VIs become disconnected, but running,
the Data Received graphs keep the last received values.
Click on the Front Panel button to stop the VI.
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