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ABOUT THE GENERIC TERMS AND ABBREVIATIONS
Generic Term/Abbreviation
QJ71MT91
MODBUS/TCP
MODBUS serial protocol
FC
SC
Programmable controller CPU
Basic model QCPU
High Performance model
QCPU
Process CPU
Redundant CPU
Universal model CPU
GX Developer
GX Works2
Ethernet module
Ethernet Address
MELSECNET/H
Master
Slave
Master function
Slave function
Request message
Response message
Target device
Personal computer
MBRW
MBREQ
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Unless otherwise specified, this manual uses the following generic terms and
abbreviations to explain the QJ71MT91 MODBUS/TCP interface module.
An abbreviation for the QJ71MT91 MODBUS/TCP interface module
A generic term for the protocol designed to use MODBUS protocol messages on a
TCP/IP network
A generic term for the protocol designed to use MODBUS protocol messages on a
serial interface
An abbreviation for the function code
An abbreviation for the sub code
A generic term for the Basic model QCPU, High Performance model QCPU, Process
CPU, Redundant CPU, Universal model QCPU
A generic term for the Q00JCPU, Q00CPU and Q01CPU
A generic term for the Q02CPU, Q02HCPU, Q06HCPU, Q12HCPU and Q25HCPU
A generic term for the Q02PHCPU, Q06PHCPU, Q12PHCPU and Q25PHCPU
A generic term for the Q12PRHCPU and Q25PRHCPU
A generic term for the Q00UJCPU, Q00UCPU, Q01UCPU, Q02UCPU, Q03UDCPU,
Q03UDVCPU, Q03UDECPU, Q04UDHCPU, Q04UDVCPU, Q04UDPVCPU,
Q04UDEHCPU, Q06UDHCPU, Q06UDVCPU, Q06UDPVCPU, Q06UDEHCPU,
Q10UDHCPU, Q10UDEHCPU, Q13UDHCPU, Q13UDVCPU, Q13UDPVCPU,
Q13UDEHCPU, Q20UDHCPU, Q20UDEHCPU, Q26UDHCPU, Q26UDVCPU,
Q26UDPVCPU, Q26UDEHCPU, Q50UDEHCPU, Q100UDEHCPU
The product name of the software package for the MELSEC programmable controllers
The QJ71E71-100 Ethernet interface module
A machine-specific address that is also referred to as the MAC (Media Access Control)
address. This is used to identify the addresses of external devices over a network.
The Ethernet address of the QJ71MT91 can be verified on the MAC ADD column of
the rating plate.
The MELSECNET/H network system
The side from which a request is sent to execute a function
The side where the execution request from the master is processed and its execution
result is sent
The function that allows communication with the MODBUS/TCP compatible slave
device as the master of MODBUS/TCP
The function that allows communication with the MODBUS/TCP compatible master
device as the slave of MODBUS/TCP
The message used to give a function execution request to the slave.
In the MODBUS protocol, a function execution request is given from the master to the
slave.
A function execution request cannot be given from the slave to the master.
The message with which the slave returns a function execution result to the master
A generic term for the communication targets (such as a personal computer, other
QJ71MT91 MODBUS/TCP interface module, and MODBUS protocol compatible
device) connected for data communication.
The IBM PC/AT or compatible DOS/V-based personal computer
The abbreviation for Z.MBRW or ZP.MBRW
The abbreviation for Z.MBREQ or ZP.MBREQ
Description
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