About This Manual; Abbreviations And Definitions; Numerical Representation; Documents - WEG CFW100 User Manual

ABOUT THIS MANUAL

This manual supplies the necessary information for the operation of the CFW100 frequency inverter using the
Modbus RTU protocol. This manual must be used together with the CFW100 user manual.

ABBREVIATIONS AND DEFINITIONS

ASCII American Standard Code for Information Interchange
CRC Cycling Redundancy Check
EIA Electronic Industries Alliance
TIA Telecommunications Industry Association
RTU Remote Terminal Unit

NUMERICAL REPRESENTATION

Decimal numbers are represented by means of digits without suffix. Hexadecimal numbers are represented with
the letter 'h' after the number. Binary numbers are represented with the letter 'b' after the number.

DOCUMENTS

The Modbus RTU protocol was developed based on the following specifications and documents:
MODBUS Application Protocol Specification, December
28th 2006.
MODBUS Protocol Reference Guide, June 1996.
MODBUS over Serial Line, December 20th 2006.
In order to obtain this documentation, consult MODBUS.ORG, which is nowadays the organization that keeps,
publishes and updates the information related to the Modbus protocol.
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.ctiautomation.net - Email: info@ctiautomation.net
Document
About this Manual
Version Source
V1.1b MODBUS.ORG
Rev. J MODICON
V1.02 MODBUS.ORG