GE Industrial Solutions ASTAT BP User Manual

Page 102

Advertising
background image

ASTAT BP User Manual

102

GE Industrial Solutions

©2013 GE Company All Rights Reserved

APPENDIX C -

DEVICENET™ TO MODBUS™ GATEWAY

C.1.

Introduction

C.1.1.

Overview

This is a description of the different data types that are used in the documentation of the object model. These

are standard definitions of the Open DeviceNet Vendor Association (ODVA).

C.1.2.

Definitions

The following table has a description of all of the data types used.

USINT

Unsigned Short Integer (8-bit)

UINT

Unsigned Integer (16-bit)

UDINT

Unsigned Double Integer (32-bit)

INT

Signed Integer (16-bit)

STRING

Character String (1 byte per character)

SHORT

STRINGNN

Character String (1

st

byte is length; up to NN

characters)

BYTE

Bit String (8-bits)

WORD

Bit String (16-bits)

DWORD

Bit String (32-bits)

REAL

IEEE 32-bit Single Precision Floating Point

C.1.3.

Reference Documents

ODVA Volume 1: CIP Common Specification, Edition 3.2 ©2007 ODVA

ODVA Volume 3: DeviceNet Adaptation of CIP, Edition 1.4 ©2007 ODVA

C.1.4.

Open DeviceNet Vendor Association, Inc. (ODVA)

ODVA is an independent supplier organization that manages the DeviceNet and EtherNet/IP specification and

supports the worldwide growth of the Common Industrial Protocol (CIP).

Advertising