MODBUS/TCP Network | Mitsubishi Electric Americas

(8/31/2015)

Modbus/TCP Network Module

The QJ71MT91 module offers a full MODBUS/TCP network communications facility to any Q Series system. Use this module to establish control of a MODBUS/TCP network of devices from a Q Series based system.

Key Features:

Easily configured with Intelligent Function Module utilities in GX Developer or GX Works2 (requires plug-in)
GX Configurator-MB or GX Configurator2-MB reduce setup and maintenance time
Master communication function supports both automatic communications or communication under program control if required
Also supports slave communication functions including automatic response and MODBUS device assignment
Both slave and master functions can operate concurrently
100Mbit Ethernet capability with KeepAlive and router relay functions

Required Manuals

Model Number	Description	Contents	Included?	Stocked Item
IB(NA)0800280	MODBUS/TCP Interface Module User’s Manual (Hardware) QJ71MT91	Basic information on QJ71MT91	Yes	-
SH(NA)080446	MODBUS/TCP Interface Module User’s Manual	Covers QJ71MT91 and GX Configurator MB	Included with GX Configurator MB as PDF	-

Note: Many of these manuals are available by free download from our website, www.meau.com

Model Number			QJ71MT91
			10BASE-T	100BASE-TX
Stocked Item			S
Certification			UL • cUL • CE
Transmission Specifications	Data Transmission Rate		10Mbps	100Mbps
	Maximum Node-To-Node Distance		200m
	Maximum Segment Length (*1)		100m
	Number of Cascade Connection Stages		Max. 4 stages	Max. 2 stages
	Maximum Number of Connections (*2)		64 connections
	Number of Routers That Can Be Set		1 default router + any 8 routers
	Cable		Cable compliant with the IEEE802.3 10BASE-T Standard (unshielded twisted pair cable (UTP cable), Category 3, 4, 5)	Cable compliant with the IEEE802.3 100BASE-TX Standard (shielded twisted pair cable (STP cable), Category 5)
	Connector Applicable For External Wiring		RJ45
Master Function	Automatic Communication Function	Number of Slaves (*3)	64 slaves
		Input Area Size	4k words
		Output Area Size	4k words
	Dedicated Instruction	Number of Instructions That Can Be Executed Concurrently (*4)	Up to 8 instructions
		Input Area Size	Max. 253 bytes per instruction
		Output Area Size	Max. 253 bytes per instruction
Slave Function	MODBUS Device Size	Coil	64k points
		Input	64k points
		Input Register	64k points
		Holding Register	64k points
		Extended File Register	Max. 4086k points
	No. of Simultaneously Acceptable Request Messages		64
Number of Simultaneously Connectable MELSOFT PCs			Max. 8
I/O Device Points Occupied			32 points
5VDC Internal Current Consumption			0.52A
Weight (kg)			0.11
Base Unit Slots Occupied			1

Notes:

Length between a hub and a node.
Indicates the number of TCP connections that can be established simultaneously.
Indicates the maximum number of slaves that can be communication targets.
Indicates the maximum number of dedicated instructions that can be started simultaneously from a sequence program.

MODBUS® RTU Master Module

The QJ71MB91 module adds Modbus RTU capability to a Q Series system. Use this module to communicate with and control any of a wide variety of third party Modbus compatible products.

Key Features:

Easily configured with Intelligent Function Module utilities in GX Developer or GX Works2 (requires plug-in)
GX Configurator-MB or GX Configurator2-MB reduce setup and maintenance time
Supports master communication with automatic communication
Dedicated instructions are available for communications
Supports slave communications with automatic response and device assignment function
Link operation function; allows a third party Modbus device to communicate with Modbus slaves connected to the Q Series controller via the QJ71MB91 module
115.2kbps communication speed

Required Manuals

Model Number	Description	Contents	Included?	Stocked Item
IB(NA)0800329	Modbus Interface Module User’s Manual (Hardware)	Basic information on the QJ71MB91	Yes	-
SH(NA)080578	Modbus Interface Module User’s Manual	Covers QJ71MB91 and GX Configurator MB	No	-

Note: Many of these manuals are available by free download from our website, www.meau.com. Modbus is a registered trademark of Schneider Electric.

Model Number

QJ71MB91

Stocked Item

S

Certification

UL • cUL • CE

Transmission Specifications

Number of Interfaces

RS-232 1 channel; RS-422/485 1 channel

Transmission Speed (bps)

Total transmission speed of two interfaces must be 115200 bps or less

300	600	1200	2400
4800	9600	14400	19200
28800	38400	57600	115200

Transmission Distance (Overall Distance)

RS-232

Max. 15m (49.2 ft.)

RS-422/485

Max. 1200m (3936.9 ft.) (Overall distance)

Master Function

Automatic Communication Function

Number of Slaves (*1)

32 per channel

Input Area Size

4k words

Output Area Size

4k words

Dedicated Instruction

Number of Instructions That Can Be Executed Concurrently (*2)

1 per channel

Input Area Size

Max. 253 bytes per instruction

Output Area Size

Max. 253 bytes per instruction

Slave Function

MODBUS® Device Size

Coil

64k points

Input

64k points

Input Register

64k points

Holding Register

64k points

Extended File Register

Max. 4086k points

Number of Simultaneously Acceptable Request Messages

1 request per channel

Station Number

1 to 247

I/O Device Points Occupied

32 points

5VDC Internal Current Consumption

0.31A

Weight (kg)

0.20

Base Unit Slots Occupied

1

Notes:

Indicates the maximum number of slaves that can be communication targets.
Indicates the maximum number of dedicated instructions that can be activated simultaneously from a sequence program.