Mitsubishi QJ71MB91, User Manual

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The Manual's Usage and Structure
This manual lists the process and functions up to systems operation using
the MODBUS interface module (QJ71MB91), divided into subjects.
Refer to the corresponding section when you need to know the following:
(1) Features (
CHAPTER 1)
CHAPTER 1 describes the features of the QJ71MB91.
(2) System Configuration (
CHAPTER 2)
Section 2.1 lists the applicable programmable controller CPU and corresponding
software package.
Section 2.2 lists network configuration example.
(3) Performance and Specifications (
CHAPTER 3)
Section 3.1 lists the performance specifications of the QJ71MB91.
Section 3.2 and 3.3 list the specifications of each interface.
Section 3.4 and 3.5 list the I/O signals and buffer memory of the QJ71MB91.
(4) MODBUS Standard Functions Supporting QJ71MB91 (
CHAPTER 4)
Section 4.1 lists the MODBUS standard functions supporting QJ71MB91.
Sections 4.2 to 4.20 list the frame specifications of the MODBUS standard functions
supporting QJ71MB91.
(5) Usable Functions (
CHAPTER 5)
CHAPTER 5 describes the functions of the QJ71MB91.
(6) Settings and Procedures Necessary for System Operation
(
CHAPTER 6)
CHAPTER 6 describes the pre-operation settings and procedures.
(7) Parameter Settings of the QJ71MB91
( CHAPTER 7)
CHAPTER 7 describes the parameter setting procedures and parameter details.
(8) Setting Parameters from the Utility Package (
CHAPTER 8)
CHAPTER 8 describes how to use the utility package.
(9) Setting Parameters from the Sequence Program (
CHAPTER 9)
CHAPTER 9 describes the I/O signals used for parameter settings, the I/O signal
timing charts, and program examples.
(10)Reading from/Writing to the MODBUS Device using the Sequence
Program
( CHAPTER 10)
CHAPTER 10 describes the dedicated instructions designed to read or write
MODBUS device data with sequence programs.