Chapter 10: Networking with TCP/IP

Chapter 10: Networking with TCP/IP

Brad Hedstrom

Advanced Measurements, Inc.

Overview

Transmission Control Protocol/Internet Protocol (TCP/IP) is an open network protocol standard that allows different computers and operating systems to communicate. Although until a few years ago TCP/IP was relatively unknown outside of the Unix world (government and educational institutions), since the foundation of the Internet and the World Wide Web it is now nearly a household word. All viable operating systems support it, including all operating systems upon which LabVIEW runs. Thus TCP/IP is the only networking protocol that will allow LabVIEW running on different platforms to communicate. It allows communication over the Internet and intranets.

The LabVIEW Model of TCP

The TCP/IP implementation in LabVIEW is quite clean and fairly easy to understand. There are five main VIs required in using TCP/IP in LabVIEW. These VIs can be broken down into two groups: those that deal with managing the connection and those that deal with moving data. For reference, see the LabVIEW Communications VI Reference Manual or the LabVIEW on-line help system.

Connection VIs

Three VIs manage the TCP/IP connection: TCP Listen, TCP Open Connection, and TCP Close Connection . (There are two additional connection VIs, but we?ll leave them for later.) These allow the development of servers and clients . For this discussion, we use the client/server model where the server ?listens? for requests for data and supplies this data when requested. Conversely, client VIs request or ?open? connections to servers and receive...

< Previous Excerpt Next Excerpt >

Purchase This Book

LabVIEW POWER Programming

TABLE OF CONTENTS

Chapter 10: Networking with TCP/IP

Contact Preferences

This is embarrasing...

Customize Your GlobalSpec Experience

Select Your Free Newsletters

Industry Newsletters

Select Your Free Product Alerts

This is embarrasing...