Pepperl+Fuchs OHV300, Руководство по программированию на JavaScript, Страница: 10 / 94

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Introduction
1 Introduction
This manual describes the application programming interface for OHV300 handhelds. It is
assumed the user will have programming knowledge and familiarity with the JavaScript
language.

Handhelds read code and can be programmed to transmit code data over a selected
communications link or to store data in reader memory (batch mode).

The programming environment provides interfaces to:

Read and manipulate data in reader memory.

Display information on the OHV300 screen.

Retrieve data from reader hardware or OHV300 key pad.

Access data sent by host.

Transmit data to a host computer via communications link.

Select type of communications link.

Set, change, and retrieve reader configuration settings.
1.1 Document Organization
This document is organized as follows:

Section 1, Introduction: gives a product description and describes how to use this
document.

Section 2, Programming Environment: identifies tools used to create and load
application software into reader.

Section 3, Programming Concepts: discusses how to accomplish various operations
on the reader using the application programming interface.

Section 4, Class Reference: presents classes, objects, methods, properties, and
constructors that support application programs.

Section 5 – 9: Appendix
1.2 Document and Coding Conventions
The JavaScript library uses the following naming conventions:

identifiers: mixed-case with a capital letter where words join (soCalledCamelCase);
acronyms and other initialisms are capitalized like words, e.g., nasaSpaceShuttle,
httpServer

variables and properties: initial lower case

classes (i.e., constructors): initial capital

functions: initial lower case

unit of measure: suffix to name, separated from name by underscore, using correct
case when it’s significant, e.g., offset_pixels, width_mm, power_MW, powerRatio_dB
1.3 Related Documents

OHV manuals

Interface Configuration Document