Mitsubishi Melsec A series User manual

User’s Manual
(Hardware)
AJ71E71N3-T, A1SJ71E71N3-T
AJ71E71N-B5, A1SJ71E71N-B5
AJ71E71N-B2, A1SJ71E71N-B2
Thank you for buying the Mitsubishi general-purpose programmable
controller MELSEC-A Series
© 2004 MITSUBISHI ELECTRIC CORPORATION
A Series Ethernet
Interface Module
Prior to use, please read both this manual and detailed manual
thoroughly and familiarize yourself with the product.
MODEL AJ71E71N-U-HW
MODEL
CODE 13JP67
IB (NA)-0800308-C(1112)MEE

A-1
SAFETY PRECAUTIONS
(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.
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
When controlling (changing data, program or operation status (remote RUN/
STOP) in particular) a PLC while it is running via a device such as a personal
computer connected to the special function module, configure an interlock
circuit in the sequence program so that the safety of the overall system is
always maintained.
Especially, when performing the above control for a remote PLC from an
external device, troubles occurring on the PLC side due to data
communication error may not be handled immediately.
Determine error handling methods between the external device and the PLC
CPU for when data communication errors occur, in addition to configuring a
interlock circuit in the sequence program.
WARNING
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.
CAUTION

A-2
[Design Precautions]
[Installation Precautions]
CAUTION
When laying the control wire or communication cable, do not bundle with or
place near main circuit or power line.
Keep them at least 100 mm (3.94 in.) away from such cables.
Noise may cause erroneous operation.
CAUTION
Use the PLC in the environment given in the general specifications section of
the user's manual to be used. Using the PLC outside the range of the general
specifications may result in electric shock, fire, or erroneous operation or
may damage or degrade the product.
Make sure to switch all phases of the external power supply off when
installing or placing wiring. If you do not switch off the external power supply,
it will cause electric shock or damage to the product.
Make sure to switch all phases of the external power supply off before
mounting or removing the module. If you do not switch off the external power
supply, it may result in electric shock, or may damage the product.
Insert the fixing latch on the bottom of the module into the fixing hole in the
base unit and install the module using the hole point as a fulcrum. (The AnS
series module shall be fastened by screws in the base unit at the specified
torque.)
Not installing the module correctly could result in erroneous operation,
damage, or pieces of the product falling.
Tighten the screw within the range of specified torque.
If the screws are loose, it may result in fallout, short circuits or malfunction.
Tightening the screws to far may cause damage to the screw and/or the
module, resulting in fallout, short circuits or malfunction.
Do not touch the electronic parts or the module conducting area directly.
It may cause erroneous operation or failure.

A-3
[Wiring Precautions]
CAUTION
Do not connect the AUI cable when the module installation station's power is
turned on.
Perform 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.
Attach connector to the module securely.
Be 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, alllowing them to be
accidentally pulled, which may cause a module malfunction and cable
damage.
Tighten the screw within the range of specified torque.
If the screws are loose, it may result in short circuits or malfunction.
Tightening the screws to far may cause damage to the screw and/or the
module, resulting in fallout, short circuits or malfunction.
Do not grab on the cable when removing the communication cable
connected to the module.
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 a
malfunction or damage to the module or cable.
Solder coaxial cable connectors properly.
Insufficient soldering may cause malfunction.
Be sure that cuttings, wire chips, or other foreign matter do not enter the
module.
Foreign matter may start a fire or cause an accident or erroneous operation.

A-4
[Startup and Maintenance Precautions]
WARNING
Do not touch the terminals while the electricity is on.
Doing so could cause erroneous operation.
Make sure to switch all phases of the external power supply off before
cleaning or re-tightening screws.
If you do not switch off the external power supply, it will cause failure or
erroneous operation of the module.
If the screws are loose, it may result in fallout, short circuits, or erroneous
operation.
Tightening the screws too far may cause damage to the screws and/or the
module, resulting in fallout, short circuits, or erroneous operation.
CAUTION
Do not disassemble or rebuild the module.
It may cause failure, erroneous operation, injury, or fire.
Make sure to switch all phases of the external power supply off before
mounting or removing the module.
If you do not switch off the external power supply, it will cause failure or
erroneous operation of the module.
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.

A-5
[Operating Precautions]
[Disposal Precautions]
WARNING
Do not write data in the “system area” in the buffer memory of the special
function module.
Also, of the output signals directed to the special function module from the
PLC CPU, do not output (switch on) the signals that are “use-prohibited”.
If data is written to the ”system area” or output is performed with respect to a
“use-prohibited” signal, it may result in the malfunction of the PLC system.
CAUTION
Before performing the control of the PLC in operation (especially changing
data, program, and operation status (remote RUN/STOP)) by connecting a
personal computer, etc. to the special function module, read the manual
carefully and confirm if the overall safety is maintained.
Failure to perform correct operations to change data, program, or the
operation status may result in system malfunction, machine damage, or an
accident.
Remote RUN/STOP for the module installation station’s PLC/CPU is
recommended to use the “Data Exchange during PLC CPU STOP” function
after throughly reading the manual.
If the remote RUN/STOP is executed without using the “Data Exchange
during PLC CPU STOP” function, the output signal from the PLC CPU to the
module goes OFF and the communication line is disconnected (close
processing).
As a result, all data transmission from other nodes, including status control of
the PLC CPU, becomes impossible.
CAUTION
When disposing of this product, handle it as industrial waste.

A-6
CONDITIONS OF USE FOR THE PRODUCT
(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;
• Nuclear 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.
• Railway 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.
• Aircraft 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.

A-7
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.

A-8
REVISIONS
*The manual number is noted at the lower right of the top cover.
©2004 MITSUBISHI ELECTRIC CORPORATION
Print Date * Manual Number Revision
Sep., 2004 IB(NA)-0800308-A First printing
Dec., 2004 IB(NA)-0800308-B
AJ71E71N3-T, A1SJ71E71N3-T
AJ71E71N-T, A1SJ71E71N-T
Dec., 2011 IB(NA)-0800308-C
SAFETY PRECAUTIONS, COMPLIANCE WITH
EMC AND LOW VOLTAGE DIRECTIVES
SAFETY PRECAUTIONS (Chinese),
CONDITIONS OF USE FOR THE PRODUCT
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.
Additional model
Deleted model
Correction
Addition

A-9
CONTENTS
1. OVERVIEW .................................................................................................... 1
2. PERFORMANCE SPECIFICATIONS ............................................................. 2
3. SETTINGS AND NAMES OF EACH PART ................................................... 6
4. LOADING AND INSTALLATION .................................................................. 10
4.1 Handling Precautions ............................................................................. 10
4.2 Installation Environment ......................................................................... 10
5. CONNECTION TO A NETWORK ................................................................ 11
5.1 Connecting to the 10BASE-T
(AJ71E71N3-T, A1SJ71E71N3-T) ......................................................... 12
5.2 Connecting to the 10BASE5
(AJ71E71N-B5, A1SJ71E71N-B5) ......................................................... 12
5.3 Connecting to the 10BASE2
(AJ71E71N-B2, A1SJ71E71N-B2) ......................................................... 12
6. EXTERNAL DIMENSIONS .......................................................................... 13

A-10
ABOUT THE MANUALS
The following product are available for this equipment.
Refer to the table given below to choose suitable manuals.
COMPLIANCE WITH EMC AND LOW VOLTAGE DIRECTIVES
(1) Method of ensuring compliance
To ensure that Mitsubishi programmable controllers maintain EMC
and Low Voltage Directives when incorporated into other
machinery or equipment, certain measures may be necessary.
Please refer to one of the following manuals.
• User's manual for the CPU module used
• User's manual (hardware) for the CPU module or base unit
used
The CE mark on the side of the programmable controller indicates
compliance with EMC and Low Voltage Directives.
(2) Additional measures
To ensure that this product maintains EMC and Low Voltage
Directives, please refer to one of the manuals listed under (1).
Related Manual
Manual name Manual No.
(Model code)
For A Ethernet Interface Module User's Manual SH-080192
(13JR45)

1
1. OVERVIEW
This manual explains how to install the following Ethernet interface
modules (abbreviated as E71 hereafter) for A series PLC CPU and how
to wire them with external devices.
After unpacking E71, verify that the following parts are contained.
Model name Product name No. of items
AJ71E71N3-T AJ71E71N3-T type Ethernet Interface Module 1
AJ71E71N-B5 AJ71E71N-B5 type Ethernet Interface Module 1
AJ71E71N-B2 AJ71E71N-B2 type Ethernet Interface Module 1
F type Connector (A6RCON-F) 1
A1SJ71E71N3-T A1SJ71E71N3-T type Ethernet Interface Module 1
A1SJ71E71N-B5 A1SJ71E71N-B5 type Ethernet Interface Module 1
A1SJ71E71N-B2 A1SJ71E71N-B2 type Ethernet Interface Module 1
F type Connector (A6RCON-F) 1

2
2. PERFORMANCE SPECIFICATIONS
The performance specifications of E71 is shown below. See CPU
module user's manual to be used for E71 general specifications.
Item
Specifications
AJ71E71N3-T
A1SJ71E71N3-T
10BASE-T
Transmission
specifications
Data transmission
speed 10 Mbps
Communication mode Half-duplex
Transmission method Base band
Maximum distance
between nodes —
Maximum segment
length 100 m (328.08 ft.) (*1)
Maximum number of
nodes/connection Cascade connection is a maximum 4 stages
Minimum node
interval —
Transmission
data storage
memory
Number of allowable
simultaneously open
connectors
8 connections
Fixed buffer 1 k word ×8
Random access
buffer 3 k word ×2
Number of remote nodes that can be
communicated in a single initial
processing
No restrictions
Number of occupied I/O points 32 points/1 slot (I/O assignments: special 32 points)
5 V DC internal current consumption AJ71E71N3-T : 0.69A
A1SJ71E71N3-T : 0.69A
Connector Modular jack (RJ45)
Connection cable Unshielded twisted pair cable (UTP), or shielded
twisted pair cable (STP) rated in category 3, 4 or 5
12 V DC external power supply
capacity (for transceiver) —
External dimensions
AJ71E71N3-T:
250 (9.84) (H) ×37.5 (1.48) (W) ×106 (4.17) (D)
[mm (in.)]
A1SJ71E71N3-T:
130 (5.12) (H) ×34.5 (1.36) (W) ×94 (3.70) (D)
[mm (in.)]
• All do not include the protruded section on the front
surface.
Weight AJ71E71N3-T
A1SJ71E71N3-T
: 0.30 kg (0.66Ib.)
: 0.17 kg (0.37Ib.)

3
*1 Length between hub and node.
*2 It is required to use the one that satisfies the specifications of the transceiver
and the AUI cable. Also, for the AJ71E71N-B5, the voltage drop (Max. 0.8V)
must be taken into account.
Item
Specifications
AJ71E71N-B5
A1SJ71E71N-B5
AJ71E71N-B2
A1SJ71E71N-B2
10BASE5 10BASE2
Transmission
specifications
Data transmission
speed 10 Mbps
Communication mode Half-duplex
Transmission method Base band
Maximum distance
between nodes 2500 m (8202.10 ft.) 925 m (3034.77 ft.)
Maximum segment
length 500 m (1640.42 ft.) 185 m (606.96 ft.)
Maximum number of
nodes/connection 100 nodes per segment 30 nodes per segment
Minimum node
interval 2.5 m (8.20 ft.) 0.5 m (1.64 ft.)
Transmission
data storage
memory
Number of allowable
simultaneously open
connectors
8 connections
Fixed buffer 1 k word ×8
Random access
buffer 3 k word ×2
Number of remote nodes that can be
communicated in a single initial
processing
No restrictions
Number of occupied I/O points 32 points/1 slot (I/O assignments: special 32 points)
5 V DC internal current consumption AJ71E71N-B5 : 0.55A
A1SJ71E71N-B5 : 0.57A
AJ71E71N-B2 : 0.67A
A1SJ71E71N-B2 : 0.66A
Connector D-sub connector
(Male 15-pin) BCN connector
Connection cable AUI cable
(Twisted pair cable)
Coaxial cable
(RG58A/U, RG58C/U)
12 V DC external power supply
capacity (for transceiver) (*2) —
External dimensions
AJ71E71N-B5, AJ71E71N-B2:
250 (9.84) (H) ×37.5 (1.48) (W) ×106 (4.17) (D)
[mm (in.)]
A1SJ71E71N-B5, A1SJ71E71N-B2:
130 (5.12) (H) ×34.5 (1.36) (W) ×94 (3.70) (D)
[mm (in.)]
• All do not include the protruded section on the front
surface.
Weight
AJ71E71N-B5:
0.33 kg (0.73Ib.)
A1SJ71E71N-B5:
0.20 kg (0.44Ib.) (*3)
AJ71E71N-B2:
0.35 kg (0.77Ib.)
A1SJ71E71N-B2:
0.21 kg (0.46Ib.) (*4)

4
*3 The weight of the A1SJ71E71N-B5 is 0.19kg (0.42lb.) when the hardware
version is "A".
*4 The weight of the A1SJ71E71N-B2 is 0.20kg (0.44lb.) when the hardware
version is "B" or earlier.

5
Notes (1) Each item in the transmission specifications gives
supplementary explanation.
• When connected by 10BASE2, 10BASE5
• When connected by 10BASE-T
(2) Hardware specifications for E71 are based on IEEE802.3.
Node
Node
Node
Node
Node
Repe-
ater
Repe-
ater
Segment length
Terminator
Transceiver
Segment length Segment length
Maximum
distance
between nodes
Maximum 100 m
(328.08 ft.)
Maximum 100 m
(328.08 ft.)
Hub
E71
Cascade connection
is a maximum of 4 stages

6
3. SETTINGS AND NAMES OF EACH PART
*1 The LED provided on the connector does not light up.
(*1)
4)
3)
2)
1)
7)
6)
5)
3)
2)
1)
8)
3)
2)
1)
A
J71E71N3-T AJ71E71N-B2AJ71E71N-B5
(*1)
Side view indicated
by arrow A
3)
A
3)
4)
2)
1)
6)
7)
2)
1)
8)
3)
2)
1)
A1SJ71E71N3-T A1SJ71E71N-B2A1SJ71E71N-B5

7
(1) Display LED display contents
No. Designation Contents
1) Display LED Refer to (1)
2) Operation mode setting switch Refer to (2)
3) Exchange condition setting
switch Refer to (3)
4) 10BASE-T connector (RJ45) Connector for connecting the E71 to the 10BASE-T.
5) External power supply indicator
lamp
Lamp for verifying if power is being supplied to the
transceiver.
ON:
OFF:
Power supplying
Power not supplied
6) External power supply terminal
Power source terminals for power source supply to
the transceiver.
AJ71E71N-B5
A1SJ71E71N-B5
: 14.08 V to 15.75 V
: 13.28 V to 15.75 V
7) AUI cable connector
Connector for connecting the E71 to the 10BASE5.
(For connection of 10BASE5-use AUI cable
(transceiver cable))
8) 10BASE2 connector Connector for connecting the E71 to the 10BASE2.
Display LED Display contents When lamp is lit Lamp is not lit
RUN Normal operation display Normal Error
RDY Exchange ready end display Starts flashing when On-line Operations
begin
BSY Exchange processing executing
display
Turns on when exchange processing with
remote node is being executed.
SW.ERR. (For system) — —
COM.ERR. Exchange error detection display Exchange error Normal
CPU R/W Exchange processing executing
with PLC CPU display Exchanging Not exchanging
BUF1 to BUF8
Display of communication line
connection status of connection
No.n corresponding to BUFn.
Open completed Closed status
TEST Self diagnostic executing display Self diagnosis
executing
Self diagnosis
completed
TEST ERR. Self diagnosis results display Error Normal

8
Remarks
The order of the display LEDs is shown below.
(2) Operation mode setting switch setting
Set the E71 operation mode. (Usually set to on-line)
(This is set at "0 (on-line) " at the time of shipping from factory.)
Operation mode
setting switch
Setting
number
Setting
designation Setting contents
0 On-line Performs exchange with remote node in the
normal operation mode.
1 Off-line Disconnects the local station from the network.
2Test1 Performs a self diagnosis test using a self
loopback test.
3 Test 2 Performs a RAM test.
4 Test 3 Performs a ROM test.
5 to F Usage not impossible
A1SJ71E71N3-T,A1SJ71E71N-B5,AJ71E71N3-T,AJ71E71N-B5,
A1SJ71E71N-B2AJ71E71N-B2

9
(3) Communications exchange condition setting switch setting
Set the conditions for data communication with other nodes.
(This is set at "OFF" at the time of shipping from factory.)
*1 Set to OFF for normal use.
When a TCP ULP time out error (error code: 9059H) occurs due to data
transfer from remote node while this switch is set to ON, run the close and
open operations with the sequence program.
*2 Set to OFF for normal use.
*3 When the hardware version is "B" or later, the communications exchange
condition setting switches for the A1SJ71E71N-B5 are as shown below.
Communications
exchange condition
setting switch
Switch Setting designation Setting contents
(*3)
SW1
Line processing
selection during
TCP timeout error
Selects the line processing when the TCP
ULP time out error occurrence. (*1)
OFF Close the circuit.
ON Do not close the circuit.
SW2 Data code setting
Selects the type of data code for exchanging
data with the remote node.
OFF Conducts exchange in binary code.
ON Conducts exchange in ASCII code.
SW3
to
SW6
— Usage not possible (Fixed to OFF)
SW7 CPU exchange
timing setting
Selects whether to approve or forbid data
arriving from the remote node when a PLC
CPU is running.
OFF Writing prohibited.
ON Writing approved.
SW8 Initial timing
setting
Selects the initial processing starts up
timing. (*2)
OFF
Quick start (starts without a delay
time)---Set when one network is
used for the entire configuration.
ON
Normal start (start after a delay of 20
seconds)---Use when the entire
configurations is made up of multiple
networks.
SW8
SW7
SW6
SW5
SW4
SW3
SW2
SW1
ONOFF
SW8 SW1
OFF
ON