Mitsubishi MELSEC QJ71C24N User manual

Serial Communication

Module

User's Manual

(Hardware)

QJ71C24N, QJ71C24N-R2

QJ71C24N-R4

QJ71C24, QJ71C24-R2

Thank you for purchasing the Mitsubishi programmable controller

MELSEC-Q Series.

Prior to use, please read this and relevant manuals thoroughly to

fully understand the product.

MODEL QJ71C24-U-HW-JE

MODEL

CODE 13JQ31

IB(NA)-0800008-I (0807)MEE

-1

DANGER

CAUTION

•SAFETY PRECAUTIONS •

(Be sure to read these instructions before using the product.)

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

introduced in this manual carefully and pay full attention to safety to handle the

product correctly.

Note that these precautions apply only to this product. Refer to the user's

manual of the CPU module for the programmable controller system safety

precautions.

In this manual, the safety instructions are ranked as "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 medium or slight personal injury or

physical damage.

Note that the CAUTION level may lead to a serious consequence

according to the circumstances.

Always follow the instructions of both levels because they are important to

personal safety.

Please save this manual to make it accessible when required and always

forward it to the end user.

-2

[Design Instructions]

CAUTION

zDo not bunch the control wires or communication cables with the main

circuit or power wires, or install them close to each other.

They should be installed 100mm(3.9inch) or more from each other.

Not doing so could result in noise that may cause malfunction.

[Installation Instructions]

CAUTION

zUse the programmable controller in an environment that meets the general

specifications contained in the user's manual of the CPU module to use.

Using this programmable controller in an environment outside the range of

the general specifications could result in electric shock, fire, erroneous

operation, and damage to or deterioration of the product.

zWhile pressing the installation lever located at the bottom of module, insert

the module fixing tab into the fixing hole in the base unit until it stops. Then,

securely mount the module with the fixing hole as a supporting point.

Incorrect loading of the module can cause a malfunction, failure or drop.

When using the programmable controller in the environment of much

vibration, tighten the module with a screw.

zTighten the screw in the specified torque range.

Undertightening can cause a drop, short circuit or malfunction.

Overtightening can cause a drop, short circuit or malfunction due to

damage to the screw or module.

zCompletely turn off the externally supplied power used in the system before

mounting or removing the module.

Not doing so could result in damage to the product.

zDo not directly touch the conductive area or electronic components of the

module.

Doing so may cause malfunction or failure in the module.

-3

[Wiring Instructions]

CAUTION

zWhen turning on the power and operating the module after installation and

wiring are completed, always attach the terminal cover that comes with the

product.

There is a risk of electric shock if the terminal cover is not attached.

zPerform correct pressure-displacement, crimp-contact or soldering for

external wire connections using the tools specified by the manufactures.

Incorrect connection may cause short circuits, fire, or malfunction.

zAttach connectors to the module securely.

zBe sure to fix communication cables or power supply cables leading from

the module by placing them in the duct or clamping them.

Cables not placed in the duct or without clamping may hang or shift,

allowing them to be accidentally pulled, which may cause a module

malfunction and cable damage.

zBefore connecting the cables, check the type of interface to be connected.

Connecting or erroneous wiring to the wrong interface may cause failure to

the module and external devices.

zTighten the terminal screws within the range of specified torque.

If the terminal screws are loose, it may result in short circuits or

malfunction.

If the screws are tightened too much, it may cause damage to the screw

and/or the module, resulting in fallout, short circuits or malfunction.

zWhen removing the communication cable or power supply cable from the

module, do not pull the cable. When removing the cable with a connector,

hold the connector on the side that is connected to the module.

When removing the cable connected to the terminal block, first loosen the

screws on the part that is connected to the terminal block.

Pulling the cable that is still connected to the module may cause

malfunction or damage to the module or cable.

zBe sure there are no foreign substances such as sawdust or wiring debris

inside the module. Such debris could cause fires, damage, or erroneous

operation.

zThe module has an ingress prevention label on its top to prevent foreign

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

Do not peel this label during wiring.

Before starting system operation, be sure to peel this label because of heat

dissipation.

-4

Revisions

The manual number is given on the bottom right of the cover.

Print Date Manual Number Revision

Sep., 1999 IB(NA)-0800008-A First printing

Dec., 1999 IB(NA)-0800008-B Addition

"Compliance with the EMC Directive and Low Voltage

Directive", Chapter 6 (1) (a) · (c) ·(2) REMARK

Correction

"Safety Precautions", Chapter 2, Section 5.2 (3)

Sep., 2000 IB(NA)-0800008-C Add the contents of the function version B.

Put Windows®base software products together from

Mitsubishi Programmable Controller MELSEC series to

Mitsubishi integrated FA software MELSOFT series.

Standardize the name from software package (GPP

function) to product name (GX Developer).

Correction

"Safety Precautions", "Manuals", "Compliance with the

EMC Directive and Low Voltage Directive", Chapter 2,

Chapter 6(1)(b)(c).

Dec., 2002 IB(NA)-0800008-D Addition model

QJ71C24N, QJ71C24N-R2, QJ71C24N-R4

Feb., 2003 IB(NA)-0800008-E Addition

Chapter 1, Section 3.1

Mar., 2006 IB(NA)-0800008-F Correction

"Safety Precautions", "Compliance with the EMC and

Low Voltage Directives", Section3.1, 5.2, Chapter 7

Sep., 2007 IB(NA)-0800008-G

Change of a term

"PLC" was changed to "programmable controller".

Correction

Section 3.1, Chapter 4, Section 5.1, 5.2, Chapter 7

Jan., 2008 IB(NA)-0800008-H

Correction

Section 3.1, Chapter 4, 7

Jul., 2008 IB(NA)-0800008-I Correction

"Compliance with the EMC and Low Voltage Directives",

Section 3.1, 5.2

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.

-5

CONTENTS

1. Overview······································································································ 1

2. Performance Specifications ········································································· 2

3. Mounting and Installation ············································································· 3

3.1 Handling Precautions ············································································· 3

3.2 Installation Environment ········································································· 3

4. Part Names·································································································· 4

5. External Wiring ···························································································· 6

5.1 Connecting to the RS-232 line································································ 6

5.2 Connecting to the RS-422/485 line························································· 9

6. Settings for GX Developer ········································································· 13

7. External Dimensions ·················································································· 16

About Manuals

The following table lists manuals relating to this product.

If necessary, obtain a proper manual in accordance with the intended use.

Relevant Manuals

Manual name Manual No.

(Model code)

Q Corresponding Serial Communication Module

User's Manual (Basic)

SH-080006

(13JL86)

Q Corresponding Serial Communication Module

User's Manual (Application)

SH-080007

(13JL87)

Q Corresponding MELSEC Communication Protocol

Reference Manual

SH-080008

(13JF89)

Please read the Q Corresponding Serial Communication Module User's

Manual (Basic) before using this module.

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 is written to provide proper information and instructions on

installation and wiring of the QJ71C24N, QJ71C24N-R2, QJ71C24N-R4,

QJ71C24 and QJ71C24-R2 serial communication modules (hereinafter referred

to as the serial communication module).

Check that the following items are included with the product package.

Model name Product name Quantity

QJ71C24N or QJ71C24 serial communication module 1

Terminal resistor for RS-422 communication 330 1/4 W

(Orange-Orange-Brown) *1 2

QJ71C24N or

QJ71C24 Terminal resistor for RS-485 communication 110 1/2 W

(Brown-Brown-Brown) *1 2

QJ71C24N-R2

or QJ71C24-R2

QJ71C24N-R2 or QJ71C24-R2 serial communication

module 1

QJ71C24N-R4 serial communication module 1

RS-422/485 plug-in connector socket block 2

Terminal resistor for RS-422 communication 330 1/4 W

(Orange-Orange-Brown) *1 4

Terminal resistor for RS-485 communication 110 1/2 W

(Brown-Brown-Brown) *1 4

QJ71C24N-R4

Plate terminal for braided shield cable connection 4

1: Differentiate the terminal resistors as follows:

330 110

Brown

Orange Orange Brown Brown Brown

2. Performance Specifications

The following describes the performance specifications of the serial

communication module.

Use the modem function with reference to the relevant performance

specifications in the user's manual (Basic).

For general specifications of the serial communication module, refer to the

user's manual of the CPU module.

Specifications (when the modern function is not used)

Item QJ71C24N

QJ71C24

QJ71C24N-R2

QJ71C24-R2 QJ71C24N-R4

CH1 RS-232-compliance

(D-sub 9pin)

RS-232-compliance

(D-sub 9pin)

RS-422/485-compliance

(2-piece plug-in

connector socket block)

Interface

CH2 RS-422/485-compliance

(2-piece terminal block)

RS-232-compliance

(D-sub 9pin)

RS-422/485-compliance

(2-piece plug-in

connector socket block)

Synchronization method Start-stop synchronization method

[QJ71C24N(-R2/R4)]

50 300 600 1200 2400 4800 9600

14400 19200 28800 38400 57600 115200 230400 (bps)

•Transmission speed 230400 bps is available for only CH1. (Not

available for CH2)

•Total transmission speed of two interfaces is available up to 230400

bps.

•Total transmission speed of two interfaces is available up to 115200

bps when the communication data monitoring function is used.

[QJ71C24(-R2)]

50 300 600 1200 2400 4800 9600

14400 19200 28800 38400 57600 115200 - (bps)

Transmission speed

•Total transmission speed of two interfaces is available up to 115200

bps.

Start bit 1

Data bit 7/8

Parity bit 1(vertical parity) or none

Data format

Stop bit 1/2

Parity check For all protocol, select odd/even by the parameter when there is an error.

Error detection Sum check

code

Select by the parameter for MC protocol/Bidirectional protocol.

Select by the user entry frame for non-procedure protocol.

RS-232 Maximum 15 m

(49.2 ft.)

Maximum 15 m

(49.2 ft.) -

Transmission

distance

(Overall

distance) RS-422/485

Maximum 1200 m

(4592.4 ft.)

(overall distance)

Maximum 1200 m

(4592.4 ft.)

(overall distance)

Allowable number of writes

to flash ROM Maximum 100,000 writes to the same area

Number of occupied I/O

points 32 points per slot (I/O assignment: Intelli: 32 points)

Specifications (when the modern function is not used)

Item QJ71C24N

QJ71C24

QJ71C24N-R2

QJ71C24-R2 QJ71C24N-R4

RS-232 7/0. 127 P HRV-SV Outside diameter 8.5mm (0.33in.) or more

(Oki Electric Cable Co., Ltd. Applicable number is specified in .)

Recommended

cable RS-422/485

(*1)

SPEV (SB)-MPC-0.2 3P Outside diameter approx. 6.5mm (0.26 in.)

(Mitsubishi Cable Industries, LTD.)

SPEV(SB)-0.2 3P Outside diameter approx. 7.5mm (0.3 in.)

(Mitsubishi Cable Industries, LTD.)

Applicable connector for

external wiring D-sub 9 pin (male) screw type (*2) -

5V DC internal current

consumption 0.31A 0.26A 0.39A

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

Weight 0.20kg (0.44lb)

1: Recommended cables SPEV (SB)-MPC-0.2 3P and SPEV (SB)-0.2 3P

are equivalent in the electrical characteristics, but partially different in the

outside diameter, internal wire colors, etc.

2: Refer to Section 5.1 for the recommended cable.

3. Mounting and Installation

3.1 Handling Precautions

(1) Do not drop the module or subject it to heavy impact since it is made of

resin.

(2) Always make sure to touch the grounded metal to discharge the electricity

charged in the body, etc., before touching the module.

Failure to do so may cause a failure or malfunctions of the module.

(3) Tighten the screws such as module fixing screws within the following

ranges.

Screw location Tightening torque range Remarks

RS-422/485 terminal block

terminal screw (M3 screw) 0.42 to 0.58N•m -

RS-422/485 plug-in connector

socket terminal screw for

QJ71C24N-R4 (M2 screw)

0.20 to 0.25N•m -

RS-232 cable connector

screw (M2.6 screw) 0.20 to 0.39N•m

Screw hole depth:

L=3.2mm or less

(Internal length from the

surface)

Module fixing screw (normally

not required) (M3 screw) ( 1) 0.36 to 0.48N•m -

1: The module can be easily fixed onto the base unit using the hook at the

top of the module.

However, it is recommended to secure the module with the module

fixing screw if the module is subject to significant vibration.

3.2 Installation Environment

For further details, refer to the user's manual for the CPU module.

4. Part Names

QJ71C24N

QJ71C24 ( 1)

QJ71C24N-R2

QJ71C24-R2 ( 2)

QJ71C24N-R4

5) 5)

*1: The appearance of the QJ71C24 is almost the same as that of the

QJ71C24N, except for the model name part and serial number plate.

*2: The appearance of the QJ71C24-R2 is almost the same as that of the

QJ71C24N-R2, except for the model name part and serial number plate.

Name Contents

1) Display LED Display LED (For details, see Section (1).)

2) RS-232 Interface RS232 interface for serial communication with external devices

(D-Sub 9pin)

3) RS-422/485

Interface

RS422/485 interface for serial communication with external

devices (2-piece terminal block)

4) RS-422/485

Interface

RS422/485 interface for serial communication with external

devices (2-piece plug-in socket block)

5) Serial number

plate Indicates the serial No. of the serial communication module.

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