Channel Access Client Tutorial

Contents

Copyright

Contents

1. - Overview

What is Channel Access?

What Does Channel Access Provide?

The Purpose of this Document

2. - Reading PV Values

A Simple Program

1. - Include Files and Program Compilation

2. - Initializing Channel Access

3. - Establishing a Connection to a PV

4. - Checking Success/Failure of Requests

5. - Reading a PV's Value

6. - Closing Channel Access

Callback Functions

1. - Reading Values Using ca_array_get_callback()

2. - Allowing an Event Handler to Execute

3. - Event Handlers

3.1. - my_own_handler()

4. - Data Types

3. - Writing to PVs and Using Connection Handlers

An Example Program

1. - Connection Handlers

2. - Writing to a PV

3. - Exception Handlers

4. - Monitoring a PV

Monitoring a PV for Changes

Monitoring a PV for Changes in Access Rights

An Example Program

5. - Synchronous Group Operations and Other Client Calls

Synchronous Group Calls

Other Channel Access Calls

Appendix A

INDEX

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