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SECTION 1

Introduction to Function Blocks

This section introduces the function block functionality of the CX-Programmer and explains the features that are not

contained in the non-function block version of CX-Programmer.

1-1 Introducing the Function Blocks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1-1-1 Overview and Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1-1-2 Function Block Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1-1-3 Files Created with CX-Programmer Ver. 6.0 or Later . . . . . . . . . . . 8

1-1-4 Function Block Menus in CX-Programmer Ver. 5.0

(and later Versions) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

1-2 Function Blocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

1-2-1 Outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

1-2-2 Advantages of Function Blocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

1-2-3 Function Block Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

1-3 Variables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

1-3-1 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

1-3-2 Variable Usage and Properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

1-3-3 Variable Properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

1-3-4 Variable Properties and Variable Usage . . . . . . . . . . . . . . . . . . . . . . 20

1-3-5 Internal Allocation of Variable Addresses . . . . . . . . . . . . . . . . . . . . 21

1-4 Converting Function Block Definitions to Library Files . . . . . . . . . . . . . . . . 23

1-5 Usage Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

1-5-1 Creating Function Blocks and Executing Instances . . . . . . . . . . . . . 23

1-5-2 Reusing Function Blocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

1-6 Version Upgrade Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Omron CX-PROGRAMMER V8.1 User Manual

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