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QJ71MT91
Mitsubishi Electric QJ71MT91 User Manual
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MODBUS/TCP
Interface Module User's Manual
-QJ71MT91
-GX Configurator-M
B (SW1D5C-QMBU-
E)
2
Table of Contents
Default Chapter
3
Safety Precautions
3
Conditions of Use for the Product
7
Revisions
8
Table of Contents
10
Compliance with the Emc and Low Voltage Directives
14
The Manual's Usage and Structure
14
About the Generic Terms and Abbreviations
16
Meanings and Definitions of Terms
17
Product Configuration
17
1 Overview
18
Features
18
2 System Configuration
23
Applicable Systems
23
Devices Necessary for Network Configuration
25
System Configuration and Access Range
27
Precautions for System Configuration
29
Checking Function Version and Software Version
30
3 Specifications
33
Performance Specifications
34
I/O Signals for Programmable Controller CPU
35
I/O Signal List
35
Applications and Assignment of Buffer Memory
37
Buffer Memory List
37
4 Modbus Standard Functions
43
MODBUS Standard Function Support List
43
Frame Specifications
45
PDU Formats by Functions
46
Read Coils (FC: 01)
48
Read Discrete Inputs (FC: 02)
49
Read Holding Registers (FC: 03)
50
Read Input Registers (FC: 04)
51
Write Single Coil (FC: 05)
52
Write Single Register (FC: 06)
53
Write Multiple Coils (FC: 15)
54
Write Multiple Registers (FC: 16)
56
Read File Record (FC: 20) (SC: 06)
57
Write File Record (FC: 21) (SC: 06)
59
Mask Write Register (FC: 22)
61
Read/Write Multiple Registers (FC: 23)
62
5 Functions
63
Function List
63
Master Function
65
Automatic Communication Function
65
Dedicated Instructions
71
Slave Function
72
Automatic Response Function
72
MODBUS Device Assignment Function
73
Keepalive Function
74
Router Relay Function
76
GX Developer Connection Function
77
6 Pre-Operational Procedures and Setting
78
Handling Precautions
78
Pre-Operational Procedures and Setting
78
Part Names
81
Connection to Ethernet
83
Unit Tests
85
Hardware Test
85
Self-Loopback Test
86
Intelligent Function Module Switch Setting
87
Communication Starting Conditions Depending on Basic Parameter/Modbus Device Assignment Parameter Starting Method Setting
93
7 Parameter Setting
98
Parameter Settings and Setting Procedure
98
Basic Parameters
103
Basic Parameters Details
103
TCP/UDP/IP Setting
103
GX Developer Connection Information Setting
104
MODBUS/TCP Setting
104
Automatic Communication Parameters
116
Automatic Communication Parameters Details
116
MODBUS Device Assignment Parameters
120
MODBUS Device Sizes
122
MODBUS Device Assignment Parameters Details
123
Default Assignment Parameters
126
MODBUS Extended File Register Assignment
128
QJ71MT91 Buffer Memory Assignment
129
8 UTILITY PACKAGE (GX Configurator-MB)
131
Functions of the Utility Package
131
Installing and Uninstalling the Utility Package
132
Handling Precautions
132
Operating Environment
134
Utility Package Operation
136
Common Utility Package Operations
136
Operation Overview
139
Starting the Intelligent Function Module Utility
141
Initial Setting
143
Auto Refresh Setting
145
Monitor/Test
147
X/Y Monitor/Test
151
Basic/Modbus Device Assignment Parameter Status
153
Automatic Communication Status
154
Error Log
156
Communication Status
157
PING Test
159
Parameter Setting Using GX Configurator-MB
160
Basic Parameters
160
Automatic Communication Parameters
163
MODBUS Device Assignment Parameters
165
9 Programming
167
Parameter Setting
167
Basic Parameter Setting
167
Automatic Communication Parameter Setting
170
MODBUS Device Assignment Parameter Setting
173
Program Example for Normal System Configuration
177
System Configuration and Program Conditions
177
Program Using Utility Package
184
Program Without Using Utility Package
188
Program Example for Use in MELSECNET/H Remote I/O Network
195
System Configuration and Program Conditions
195
Program Using Utility Package
201
Program Without Using Utility Package
205
10 Dedicated Instructions
216
Dedicated Instruction List and Available Devices
216
Z(P).Mbrw
217
Z(P).Mbreq
226
11 Troubleshooting
234
Confirming QJ71MT91 Status
245
Error Codes
248
Error Code Storage Areas
248
Exception Code List
254
Error Code List
256
Turning off the COM.ERR. LED
273
From GX Configurator-MB
273
Program Example for Use of Sequence Program
276
Conducting PING Test to Check QJ71MT91 Connection
277
From GX Configurator-MB
278
Program Example for Use of Sequence Program
282
Appendices
285
Appendix 1 External Dimensions
285
Appendix 2 Function Upgrade of the QJ71MT91
286
Appendix 3 Processing Time
286
Appendix 4 GX Developer Connection Setup Example
290
4
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Mitsubishi Electric QJ71MT91 Specifications
General
Brand
Mitsubishi Electric
Model
QJ71MT91
Category
Control Unit
Language
English
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