7-19
·
The DSR message or normal response for loop-back test use is divided into 8-byte
blocks as shown below. Any data can be set as test data 1 or 2 provided that the num-
ber of data items remains changed.
·
This command is used for checking the status of communications or for dummy com-
munications without detecting any communications time-over.
D
DSR Message
Byte No.
Data
1
Slave address
2
Function code (08 Hex)
3
Test data 1
4
Test data 1
5
Test data 2
6
Test data 2
7
CRC-16 check
8
CRC-16 check
D
Response
Normal
Byte No.
Data
1
Slave address
2
Function code (08 Hex)
3
Test data 1
4
Test data 1
5
Test data 2
6
Test data 2
7
CRC-16 check
8
CRC-16 check
Error
Byte No.
Data
1
Slave address
2
Function code (88 Hex)
3
Error code
4
CRC-16 check
5
CRC-16 check
Note
When an error occurs, the MSB of the function code will be set to 1.
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...