Mitsubishi MELSEC-A AJ71DN91 Manuale utente

Model AJ71DN91/A1SJ71DN91

DeviceNet Master Module

User’s Manual

(Hardware)

Thank you for buying the Mitsubishi general-purpose programmable

controller MELSEC-A Series

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

thoroughly and familiarize yourself with the product.

MODEL AJ71DN91-U-H-E

MODEL

CODE 13JL68

IB (NA)-66867-D(1112) MEE

zSAFETY PRECAUTIONS z

(Always read before starting use)

Before using this product, read this manual and the relevant manuals introduced in this manual

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

The instructions given this manual are concerned with this product. Refer to the User’s Manual

of the CPU module in use for details on the safety instructions for the programmable logic

controller system.

In this manual, the safety precautions are classified into two levels:

"WARNING" and " CAUTION".

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.

[DESIGN PRECAUTIONS]

WARNING

zIf a communications error occurs to a DeviceNetwork, the station in such a

communications error will be in a state as follows:

(1) The master station (AJ71DN91, A1SJ71DN91) maintains input data which had been

received from the slave station before the error occurred.

(2) Whether or not the output signal of the slave station to be turned off or maintained is

determined by the specification of the slave station or by the parameter settings in the

master station.

By referring to communications states of the slave station, arrange an interlock circuit in a

sequential program and provide safety mechanism externally of the slave station in order

the system to operate safely.

CAUTION

zDo not bundle the control wires and communication cables with the main circuit or power

wires, or install them close to each other. They should be installed at least 100 mm (3.94

in.) away from each other. Failure to do so may generate noise that may cause

malfunctions.

[INSTALLATION PRECAUTIONS]

CAUTION

zUse the PLC in the operating environment that meets the general specifications given in

the user's manual of the CPU module. Using the PLC in any other operating environment

may cause an electric shock, fire or malfunction, or may damage or degrade 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.

If the module is not installed properly, it may cause the module to malfunction, fail or fall off.

Secure the module with screws especially when it is used in an environment where

constant vibrations or strong impact may be expected.

Be sure to tighten the screws using the specified torque. If the screws are loose, it may

cause the module to malfunction or fall off. If the screws are tightened excessively, it may

damage the screws and/or the module, and cause the module to malfunction or fall off.

zBefore mounting or dismounting the module, make sure to shut off all phases of the

external power supply. Failure to do so may damage the product.

zDo not directly touch the conducting parts and electronic parts of the module. This may

cause the module to malfunction or fail.

[WIRING PRECAUTIONS]

WARNING

zMake sure to shut off all the phases of the external power supply before starting installation

or wiring. Otherwise, the personnel may be subjected to an electric shock or the product to

a damage.

CAUTION

zAlways ground the FG terminal for the PLC. There is a risk of malfunction.

zTighten the terminal screws with the specified torque. If the terminal screws are loose, it

could result in short circuits or erroneous operation. Tightening the terminal screws too far

may cause damages to the screws or the module, resulting in fallout, short circuits, or

malfunction.

[WIRING PRECAUTIONS]

CAUTION

zMake sure that foreign materials such as chips or wire pieces may not be caught inside the module.

They could cause a fire, a malfunction, or an operation error.

zMake sure to place the communications and power supply cables connected to the module within a

duct or clamp them. Unless the cables are placed within a duct or clamped, the module or cables

could be broken by swinging or moving of the cables or unintentional pulling to cause an operation

error resulting from a contact error.

zDo not pull cables by holding them with a hand for removing the communications or power supply

cables that are connected to the module. To remove a cable having a connector, hold the connector

connected to the module with a hand. To remove a cable not having a connector, loosen the screws

fastening to connect the module. The cables being pulled while they are still connected to the module

could break the module or cables, or cause an operation error resulting from a contact error.

[SETUP AND MAINTENANCE PRECAUTIONS]

CAUTION

zDo not touch the terminals while the power is on. Doing so may cause malfunctions.

zMake sure to shut off all the phases of the power supply before starting to clean the module or

retighten the terminal screws. Otherwise, an operation error could occur.

If the screws are loose, it may cause the module to short-circuit, malfunction or fall off. If the screws

are tightened excessively, it may damage the screws and cause the module to short circuit,

malfunction or fall off.

zDo not disassemble or modify the module. Disassembling or modifying the module could cause a

failure, an operation error, an injury, or a fire.

zMake sure to shut off all the phases of the power supply externally before installing or removing the

module. Otherwise, the module could cause a failure or an operation error.

zBefore handling the module, always touch grounded metal, etc. to discharge static electricity from the

human body.

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

[DISPOSAL PRECAUTIONS]

CAUTION

zTo dispose of this product, treat it as an industrial waste.

zCONDITIONS OF USE FOR THE PRODUCT z

(1) Mitsubishi programmable controller ("the PRODUCT") shall be used in conditions;

i) where any problem, fault or failure occurring in the PRODUCT, if any, shall not lead

to any major or serious accident; and

ii) where the backup and fail-safe function are systematically or automatically provided

outside of the PRODUCT for the case of any problem, fault or failure occurring in the

PRODUCT.

(2) The PRODUCT has been designed and manufactured for the purpose of being used in

general industries.

MITSUBISHI SHALL HAVE NO RESPONSIBILITY OR LIABILITY (INCLUDING, BUT

NOT LIMITED TO ANY AND ALL RESPONSIBILITY OR LIABILITY BASED ON

CONTRACT, WARRANTY, TORT, PRODUCT LIABILITY) FOR ANY INJURY OR

DEATH TO PERSONS OR LOSS OR DAMAGE TO PROPERTY CAUSED BY the

PRODUCT THAT ARE OPERATED OR USED IN APPLICATION NOT INTENDED

OR EXCLUDED BY INSTRUCTIONS, PRECAUTIONS, OR WARNING CONTAINED

IN MITSUBISHI'S USER, INSTRUCTION AND/OR SAFETY MANUALS, TECHNICAL

BULLETINS AND GUIDELINES FOR the PRODUCT.

("Prohibited Application")

Prohibited Applications include, but not limited to, the use of the PRODUCT in;

yNuclear Power Plants and any other power plants operated by Power companies,

and/or any other cases in which the public could be affected if any problem or fault

occurs in the PRODUCT.

yRailway companies or Public service purposes, and/or any other cases in which

establishment of a special quality assurance system is required by the Purchaser or

End User.

yAircraft or Aerospace, Medical applications, Train equipment, transport equipment

such as Elevator and Escalator, Incineration and Fuel devices, Vehicles, Manned

transportation, Equipment for Recreation and Amusement, and Safety devices,

handling of Nuclear or Hazardous Materials or Chemicals, Mining and Drilling,

and/or other applications where there is a significant risk of injury to the public or

property.

Notwithstanding the above, restrictions Mitsubishi may in its sole discretion, authorize

use of the PRODUCT in one or more of the Prohibited Applications, provided that the

usage of the PRODUCT is limited only for the specific applications agreed to by

Mitsubishi and provided further that no special quality assurance or fail-safe,

redundant or other safety features which exceed the general specifications of the

PRODUCTs are required. For details, please contact the Mitsubishi representative in

your region.

About the Manuals

The following product are available for this equipment.

Refer to the table given below to choose suitable manuals.

Detailed Manual

Manual name Manual No.

(Model code)

Model AJ71DN91/A1SJ71DN91

DeviceNet Master Module User's Manual

SH-4004

(13JL69)

1. Introduction

This manual describes the specifications and part names of Model

AJ71DN91/A1SJ71DN91 DeviceNet Master Module (referred to as

AJ71DN91,A1SJ71DN91, or DN91, hereafter) which is used in combination with

MELSEC-A/QnA Series PLC CPU.

DN91 controls DeviceNet devices as the master station for DeviceNet. For specifications

of DeviceNet, see DeviceNet Specifications (Release 2.0) Volumes 1 and 2.

DeviceNet is a registered trademark of Open DeviceNet Vendor Association, Inc.

2. System Configuration

The table below lists installable PLC CPUs, applicable data link systems/network systems,

and the number of CPUs, with regard to DN91.

Number of installable CPUs

Installation location A1SJ71DN91 AJ71DN91

A0J2CPU

A0J2HCPU Not applicable

A1SCPU(S1)

A1SHCPU

A1SJCPU(S3)

A1SJHCPU

A1SCPUC24-R2

A2SCPU(S1)

A2SHCPU(S1)

A2USCPU(S1)

A2USHCPU-S1

A2ASCPU(S1/S30/S60)

Q2ASCPU(S1)

Q2ASHCPU(S1)

No limitations

A1CPU

A2CPU(S1)

A3CPU

A1NCPU

A2NCPU(S1)

A3NCPU

A3MCPU

A3HCPU

A2ACPU(S1)

A3ACPU

A2UCPU(S1)

A3UCPU

A4UCPU

Q2ACPU(S1)

Q3ACPU

Q4ACPU

PLC CPU

Q4ARCPU

Not applicable

limitations

Remote I/O station of MELSECNET

Remote I/O station of MELSECNET/B

Not

applicable

AJ72LP25

AJ72BR15

Data link and

network

Remote I/O

station of

MELSECNET/10 AJ72QLP25

AJ72QBR15

Not applicable No

limitations

3. Specifications

3.1 Performance specifications

The table below lists the performance specifications of DN91.The table below lists the

performance specifications of DN91.

Item Specifications

Node type Group 2 dedicated client

Station numbers which can be set 0 to 63

Number of connections which can be

generated

63 connections for I/O communications

63 connections for message communications

Transmitting 2048 points (256 bytes) *2

I/O

communications Receiving 2048 points (256 bytes) *2

Transmitting 240 bytes

Rate of

communications

data

Message

communications Receiving 240 bytes

Communications speed One speed can be selected from 125kbps, 250kbps, and 500kbps.

Maximum transmitting

distance of trunk line

Length of

drop line

Communications

speed Thick

Cables

Thick and

Thin

Cables

Thick and

thin cables

coexist

Maximum Total

125

kbaud 500m 156

250

kbaud 250m 78m

Communications specifications

Maximum cable length *1

500

kbaud 100m

100m See Section

3.1.1 6m

39m

Number of input/output

occupied points Special 32 points

Internal current consumption

(5V DC)(A) 0.24

Mass(kg) A1SJ71DN91: 0.23, AJ71DN91: 0.43

*1: The maximum cable length complies with that in the DeviceNet specification (Release 2.0) Volumes 1

and 2.

*2: Up to 255 bytes can be transferred per slave station.

3.1.1 Maximum Transmitting Distance when Thick and Thin Cables Coexist

The table below lists both the maximum transmitting distance when thick and thin cables

coexist.

Communications speed Maximum transmitting distance of trunk line when thick

and thin cables coexit

125kbaud Thick cable length+5×Thin cable length 500m

250kbaud Thick cable length+2.5×Thin cable length 250m

500kbaud Thick cable length+Thin cable length 100m

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