Mitsubishi QJ71NT11B User manual

MELSECNET/H

Network Module

User’s Manual

(Hardware)

QJ71NT11B

Thank you for purchasing the Mitsubishi programmable controller

MELSEC-Q Series.

Prior to use, please read both this manual and detailed manual

thoroughly and familiarize yourself with the product.

MODEL QJ71NT11B-U-HW

MODEL

CODE 13JY93

IB(NA)-0800440-B(0903)MEE

2008 MITSUBISHI ELECTRIC CORPORATION

-1

zSAFETY PRECAUTIONS z

(Read these precautions before using this product.)

Before using this product, please read this manual and the relevant manuals

carefully and pay full attention to safety to handle the product correctly.

Precautionary notes in this manual cover only the installations of this product.

For precautions on designing and discarding this product, refer to "Safety

Precautions" in the MELSECNET/H Reference Manual.

For the safety instructions of the programmable controller system, please read

the CPU module user's manual.

In this manual, the safety precautions are classified into to levels: "DANGER" and

"CAUTION".

Indicates that incorrect handling may cause hazardous

conditions, resulting in death or severe injury.

Indicates that incorrect handling may cause hazardous

conditions, resulting in minor or moderate injury or property

damage.

Under some circumstances, failure to observe the precautions given under "

CAUTION" may lead to serious consequences.

Observe the precautions of both levels because they are important for personal

and system safety.

Make sure that the end users read this manual and then keep the manual in a

safe place for future reference.

DANGER

CAUTION

-2

[Installation Precautions]

CAUTION

zUse the programmable controller in the operating an environment that meets

the general specifications given in the user's manual for the CPU module

used.

Failure to do so may result in electric shock, fire, malfunction, or damage to

or deterioration of the product.

zTo mount the module, while pressing the module mounting lever located in

the lower part of module, fully insert the module fixing projection(s) into the

hole(s) in the base unit press the module until it snaps into place.

Incorrect mounting may cause malfunction, failure or drop of the module.

When using the programmable controller in an environment of frequent

vibrations, fix the module a screw.

Tighten the screw within the specified torque range.

Undertightening can cause drop of the screw, short circuit or malfunction.

Overtightening can damage the screw and/or module, resulting in drop, short

circuit, or malfunction.

zShut off the external power supply for the system in all phases before

mounting or removing the module.

Failure to do so may result in damage to the product.

zDo not directly touch any conductive part of the module.

Doing so can cause malfunction or failure of the module.

zBefore handling the module, touch a grounded metal object to discharge the

static electricity from the human body.

Failure to do so may cause the module to fail or malfunction.

-3

[Wiring Precautions]

DANGER

zShut off the external power supply for the system in all phases before wiring.

Failure to do so may result in electric shock or damage to the product.

CAUTION

zGround the FG and LG terminals to the protective ground conductor

dedicated to the programmable controller.

Failure to do so may result in electric shock malfunction.

zCheck the rated voltage and terminal layout before wiring to the terminal

block for the external power supply, and connect the cable correctly.

Connecting a cable to power supply with a different voltage rating or

incorrect wiring may cause a fire or failure.

zTighten the terminal screw within the specified torque range.

Undertightening can cause drop of the screw, short circuit or malfunction.

Overtightening can damage the screw and/or module, resulting in drop,

short circuit, or malfunction.

zCorrectly solder coaxial cable connectors. Incomplete soldering may result in

malfunction.

zPrevent foreign matter such as dust or wire chips from entering the module.

Such foreign matter can cause a fire, failure, or malfunction.

zA protective film is attached to the top of the module to prevent foreign

matter, such as wire chips, from entering the module during wiring.

Do not remove this film during wiring.

Remove it for heat dissipation before system operation.

zPlace the cables in a duct or clamp them.

If not, dangling cable may swing or inadvertently be pulled, resulting in

damage to the module or cables or malfunction due to poor contact.

zWhen disconnecting the communication and power cables from the module,

do not pull the cable by the cable part.

Loosen the screws of connector before disconnecting the cable.

When disconnecting a cable connected to a terminal block, loosen the

screws on the terminal block first before removing the cable.

Failure to do so may result in damage to the module or cable or malfunction

due to poor contact.

-4

Revisions

* The manual number is noted at the lower right of the top cover.

Print Date *Manual Number Revision

Oct., 2008 IB(NA)-0800440-A First edition

Mar., 2009 IB(NA)-0800440-B Partial Correction

SAFETY PRECAUTIONS, Capter 4, 5, 6

This manual confers no industrial property rights or any rights of any other kind, nor does it

confer any patent licenses. Mitsubishi Electric Corporation cannot be held responsible for

any problems involving industrial property rights which may occur as a result of using the

contents noted in this manual.

2008 MITSUBISHI ELECTRIC CORPORATION

-5

CONTENTS

1. OVERVIEW ................................................................................................... 1

2. PERFORMANCE SPECIFICATIONS ............................................................ 2

3. HANDLING .................................................................................................... 3

3.1 Handling Precautions ............................................................................... 4

4. PART NAME.................................................................................................. 5

5. WIRING ......................................................................................................... 7

5.1 Twisted Bus System (When using twisted pair cable) .............................. 8

5.1.1 Specifications of twisted pair cable .................................................... 8

5.1.2 Precautions for wiring twisted pair cable............................................ 9

5.2 Twisted Bus System (When using CC-Link Ver. 1.10-compatible Cable)10

5.2.1 Specifications of CC-Link Ver. 1.10-compatible cable...................... 10

5.2.2 Precautions for wiring CC-Link Ver. 1.10-compatible cable ............. 11

5.3 Connecting Twisted Pair Cable, and Solderless Terminal for

CC-Link Ver.1.10-compatible Cable....................................................... 12

6. EXTERNAL DIMENSIONS .......................................................................... 14

-6

MANUALS

The following manuals are also related to this product.

Order each manual as needed, referring to the following list.

Related Manuals

Manual name Manual No.

(Model code)

Q corresponding MELSECNET/H Network System

Reference Manual (PLC to PLC network)

SH-080049

(13JF92)

Compliance with the EMC and Low Voltage Directives

(1) For programmable controller system

To configure a system meeting the requirements of the EMC and Low

Voltage Directives when incorporating the Mitsubishi programmable

controller (EMC and Low Voltage Directives compliant) into other

machinery or equipment, refer to Chapter 9 "EMC AND LOW VOLTAGE

DIRECTIVES" of the QCPU User's Manual (Hardware Design,

Maintenance and Inspection).

The CE mark, indicating compliance with the EMC and Low Voltage

Directives, is printed on the rating plate of the programmable controller.

(2) For the product

No additional measures are necessary for the compliance of this product

with the EMC and Low Voltage Directives.

1. OVERVIEW

This manual explains how to handle the MELSECNET/H network module, model

number QJ71NT11B (hereinafter referred to as the network module).

The network module is used as a control/normal station in the PLC to PLC

network in the MELSECNET/H system.

After unpacking the network module, confirm that the following products are

enclosed.

Model name Part name Quantity

Model QJ71NT11B MELSECNET/H Network Module

(twisted bus type) 1

QJ71NT11B

Terminal resistor 110 , 1/2W(brown, brown, brown) 1

2. PERFORMANCE SPECIFICATIONS

The following table shows the performance specifications for the network

module:

Specifications

Item QJ71NT11B

MELSECNET/H mode, MELSECNET/H Extended mode*1

LX/LY 8192 points

LB 16384 points

LW 16384 points

Maximum number of link

points per network

Maximum number of link

points per station

• MELSECNET/H mode

{(LY+ LB) /8 + (2 × LW)} 2000 bytes *2

• MELSECNET/H Extended mode

{(LY+ LB) /8 + (2 × LW)} 35840 bytes *2

Communication speed 156kbps/312kbps/625kbps/1.25Mbps/2.5Mbps/5Mbps/10Mbps

(Switched by network parameters)

Communication method Token bus

Synchronous method Frame synchronous

Transmission path format Bus (RS-485)

Maximum number of

networks 239

Maximum number of

groups 32

Number of stations per

network Up to 32 stations (1 control station, 31 normal stations)

Communication speed Twisted pair

cable

CC-Link Ver.

1.10-compatible

cable

156kbps *3 1200m 1200m

312kbps 600m 900m

625kbps 400m 600m

1.25Mbps 200m 400m

2.5Mbps 200m

5Mbps 150m

10Mbps

(Not applicable) 100m

Overall distance for one

network

Connection cable Twisted pair cable or CC-Link Ver.1.10-compatible cable*4

Number of occupied I/O

points 32 points (intelligent function module: 32 points)

Internal current

consumption (5VDC) 0.6A

External dimensions 98 (3.86) (H) 27.4 (1.08) (W) 90 (3.54) (D) [mm (inch)]

Weight 0.13kg

*1: Mode selection is performed using network parameters.

*2: The number of LY points of the stations set in the I/O master station is the sum total of the

LY points for output to all stations within the block.

*3: This value is set as default of the communication speed.

*4: For details of cable specifications, refer to Section 5.1 or Section 5.2 in this manual.

For general specifications of the network module, refer to the user's manual for the CPU used.

3. HANDLING

CAUTION

zUse the programmable controller in the operating an environment that meets

the general specifications given in the user's manual for the CPU module

used.

Failure to do so may result in electric shock, fire, malfunction, or damage to

or deterioration of the product.

zTo mount the module, while pressing the module mounting lever located in

the lower part of module, fully insert the module fixing projection(s) into the

hole(s) in the base unit press the module until it snaps into place.

Incorrect mounting may cause malfunction, failure or drop of the module.

When using the programmable controller in an environment of frequent

vibrations, fix the module a screw.

Tighten the screw within the specified torque range.

Undertightening can cause drop of the screw, short circuit or malfunction.

Overtightening can damage the screw and/or module, resulting in drop, short

circuit, or malfunction.

zShut off the external power supply for the system in all phases before

mounting or removing the module.

Failure to do so may result in damage to the product.

zDo not directly touch any conductive part of the module.

Doing so can cause malfunction or failure of the module.

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