![background image](http://html1.mh-extra.com/html/omron/sysdrive-3g3mv-a2002/sysdrive-3g3mv-a2002_user-manual_742836205.webp)
7-11
H
Message Data Configuration
·
The communications message is configured entirely of hexadecimal data. (ASCII and
FINS are not used.)
·
Communications data is divided into the four areas shown in the following table.
Data name
Description
Slave address
Set the Slave address (the set value in n153) of the Inverter, to
which the DSR message is sent. The Slave address must be
within a range from 00 to 32 (00 to 20 Hex).
Function code
A command giving instructions of the details of processing to
the Inverter.
Example: Data read (03 Hex) and data write (10 Hex)
Communications data
Data attached to the command.
Example: The register number of read start data and the
number of registers of read data
Error check
CRC-16 check code for checking the reliability of the message
data.
Note
In the above communications, the default is --1 (65535) and the LSB (least-signifi-
cant byte) is converted as MSB (most-significant byte) (in the opposite direction).
The CRC-16 check is automatically performed by using the protocol macro func-
tion of OMRON’s SYSMAC CS1-series or C200HX/HG/HE Programmable Con-
trollers.
H
Slave Address
·
The Master can communicate with a maximum of 32 Slaves over RS-422/485. A
unique Slave address is allocated to each Slave (Inverter) for communications.
·
Slave addresses are within a range from 00 to 32 (00 through 20 Hex). If a DSR mes-
sage is issued to Slave address 00, the message will be a broadcast message.
Note
The broadcast message is addressed to all Slaves. Only the RUN command
(register 0001 Hex) and frequency command (register 0002 Hex) can be written
to the message. The Inverter receiving this message does not return a response
regardless of whether or not the message is received properly. Therefore, for
measures against communications errors, the monitor function of the Inverter
should be used for checking the reception of broadcast messages.
H
Function Code
·
The function code is a command giving instructions of the details of processing to the
Inverter.
Communications
Chapter 7
Summary of Contents for SYSDRIVE 3G3MV A2002
Page 1: ...USER S MANUAL SYSDRIVE 3G3MV Multi function Compact Inverter Cat No I527 E2 02...
Page 15: ...Chapter 1 Overview 1 1 Function 1 2 Nomenclature 1 3 New Features 1...
Page 24: ...Chapter 2 Design 2 1 Installation 2 2 Wiring 2...
Page 89: ...Chapter 4 Test Run 4 1 Procedure for Test Run 4 2 Operation Example 4...
Page 286: ...Chapter 9 Specifications 9 1 Inverter Specifications 9 2 Option Specifications 9...
Page 311: ...Chapter 10 List of Parameters 10...
Page 342: ...Chapter 11 Using the Inverter for a Motor 11...
Page 348: ...Appendix A Standard Models...