Mitsubishi A1SJ71AP21 User manual

Thank you for purchasing the Mitsubishi program logic controller
MELSEC-A series.
Prior to use, please read this and relevant manuals thorougly to
fully understand the product.
SAFETY PRECAUTIONS
(Be sure to read these instructions before use.)
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.
The instructions given in this manual are concerned with this product.
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 two levels:
"WARNING" and " CAUTION".
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
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
Refer to the type MELSECNET, MELSECNET/B Data Link System
Reference Manual for each station’s operating status when a
communication error occurs in the network.
Erroneous operation may result in accidents.
When controlling a running PLC (data modification) by connecting a
peripheral device or GX Developer to a CPU module or by connecting
a PC to a special function module, create an interlock circuit in the
sequence program so that the entire system will function safely all the
time.
Also, before performing any other controls (e.g. program modification,
operating status change (status control)), read the relevant manual(s)
carefully to ensure the safety.
Especially in control from an external device to a PLC in a remote
location, some PLC side problem may not be resolved immediately due
to failure of data communications.
To prevent this, create an interlock circuit in the sequence program and
set up corrective procedures to be taken in the event of communication
failure between the external device and PLC CPU.
CAUTION
Do 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 100mm (3.94in.) away from each other. Failure to do so
may generate noise that may cause malfunctions.
[Installation Precautions]
CAUTION
Use the PLC in the operating environment that meets the general
specifications of this manual.
Using the PLC in any other operating environments may cause electric
shocks, fires or malfunctions, or may damage or degrade the product.
Insert the module fixing projection into the fixing hole in the base unit to
press the module using the hole as the fulcrum, and then tighten the fixing
screw with the specified torque.
When no screw is tightened, even if the module is installed correctly, it may
cause malfunctions, a failure or a drop of the module.
Tighten the screws within the range of specified torque. If the screws are
loose, it may cause the module to fallout, short circuits, or malfunction. If the
screws are tightened too much, it may cause damage to the screw and/or
the module, resulting in fall out, short circuits or malfunction.
Completely turn off the externally supplied power used in the system before
mounting or removing the module. Failure to do so may damage the
product.
Do not directly touch the conducting parts and electronic parts of the
module. This may cause the module to malfunction or fail.
[Wiring Precautions]
WARNING
Completely turn off the externally supplied power used in the system when
installing or placing wiring.
Failure to do so may cause electric shocks or damage the product.
CAUTION
Solder coaxial cable connectors properly. Incomplete soldering may result
in malfunctioning.
Be careful not to let foreign particles such as chaff and wire chips get inside
the module. They may cause a fire, mechanical breakdown or malfunction.
The top surface of the module is covered with a protective film to prevent
foreign objects such as wire chips from entering the module during wiring
work. Do not remove this film until all the wiring work is complete. Before
operating the system, be sure to remove the film to provide adequate heat
ventilation.
Make sure to place the communication and power cables to be connected
to the module in a duct or fasten them using a clamp. If the cables are not
placed in a duct or fastened with a clamp, their positions may become
unstable and may move, or they may be pulled inadvertently. This may
damage the module and the cables or cause the module to malfunction
because of faulty cable connections.
[Setup and Maintenance Precautions]
CAUTION
Please read this manual thoroughly and confirm the safety before starting
online operations (especially, program modifications, forced outputs, and
operating status modifications), which are performed by connecting the GX
Developer via the MELSECNET network system to a running CPU module
of other station. Performing incorrect online operations may damage the
machinery or result in accidents.
Never disassemble or modify the module. This may cause breakdowns,
malfunctions, injuries or fire.
Use any radio communication device such as a cellular phone or a PHS
phone more than 25cm (9.85 inch) away in all directions of the PLC.
Not doing so can cause a malfunction.
Shut off all phases of the external power supply in the system before
mounting or dismounting the module. Failure to do so may cause failure or
malfunction of the module.
Do not touch the terminals while the power is on. Doing so may cause
malfunctions.
Shut off all phases of the external power supply in the system before
cleaning or retightening the terminal screws or module fixing screws.
Not doing so may cause failure or malfunction of the module.
If the screws are loose, it may cause the module to fallout, short circuits, or
malfunction.
If the screws are tightened too much, it may cause damages to the screws
and or/the module, resulting in fall out, short circuits or malfunction.
Before touching the module, be sure to touch grounded metal, etc. to
discharge static electricity from human body, etc.
Failure to do so may cause the module to fail or malfunction.
[Disposal Precautions]
CAUTION
When disposing of this product, treat it as industrial waste.
Data link module
type A1SJ71AP21(-S3)
/AR21
User’s Manual
(Hardware)
A1SJ71AP21
A1SJ71AP21-S3
A1SJ71AR21
1994 MITSUBISHI ELECTRIC CORPORATION
MODEL A1SJ71AP21/R21
(H/W)-U-E
MODEL
CODE 13JE58
IB(NA)-66480-C(1112)MEE

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.
Manuals
The following manual is related with this product.
Please order it as necessary.
Manual name Manual Number
(Model code)
type MELSECNET, MELSECNET/B Data Link
System Reference Manual
IB-66350
(13JF70)
Please read type MELSECNET, MELSECNET/B Data Link System Reference
Manual before using this module
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.
yUser's manual for the CPU module used
yUser'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).
1. Overview
This manual provides the specifications and descriptions of the part names
of the A1SJ71AP21(-S3)/AR21 Data Link Module (hereinafter referred to as
A1SJ71AP21/AR21) used in the MELSEC-A series MELSECNET data link
system.
(1) The following shows applications, applicable cable types and mounting
positions of the A1SJ71AP21/AR21.
Applicable cable
Optical fiber
cable
Application
SI,
H-PCF GI
Coaxial
cable
Module mounting
position
A1SJ71AP21 --- ---
A 1 S J 7 1 A P 2 1 - S 3 ---
---
A1SJ71AR21
Master or
local station --- ---
I/O slot in A1S series main
base or extension base
A1SJ71AR21 cannot
be mounted in slot 0
of A1S6 B extension
base.
(2) After unpacking, confirm that the following is included.
•A1SJ71AP21
Product name Quantity
A1SJ71AP21 data link module 1
•A1SJ71AP21-S3
Product name Quantity
A1SJ71AP21-S3 data link module 1

•A1SJ71AR21
Product name Quantity
A1SJ71AR21 data link module 1
(3) The following table lists PLC CPUs applicable to the A1SJ71AP21/
AR21 and numbers of mountable modules.
Applicable PLC CPU No. of Mountable Modules
A1SCPU, A1SJCPU-S3, A2SCPU, A1SHCPU,
A1SJHCPU, A2SHCPU 1
A2ASCPU(S1), A2USHCPU-S1, Q2ASCPU(S1),
Q2ASHCPU(S1) 2
2. Specification
Item Fiber-Optic Cable Data Link Coaxial Cable
Data Link
Model A1SJ71AP21 A1SJ71AP21-S3 A1SJ71AR21
Input (X)Max. number
of link points
used per
station
Output (Y) Up to the max. I/O points for the CPU used
B 1024points (128bytes)Max.
number of
link points
per system
W 1024points (2048bytes)
MELSECNET
Mode Max. number
of link points
per station
+ 2 W(points) 1024bytes
Y(points)+B(points)
8
B 4096points (512bytes)Max.
number of
link points
per system
W 4096points (8192bytes)
MELSECNET
II Mode Max. number
of link points
per station
first half:
+ 2 W(points) 1024bytes
Y(points)+B(points)
8
second half: + 2 W(points) 1024bytes
B(points)
8
B 4096points (512bytes)Max.
number of
link points
per system
W 4096points (8192bytes)
MELSECNET
II Composite
Mode Max. number
of link points
per station
first half:
+ 2 W(points) 1024bytes
Y(points)+B(points)
8
second half: + 2 W(points) 1024bytes
B(points)
8
Internal current consumption
(5V DC) 0.33A 0.80A
Weight 0.30kg 0.33kg
No. of occupied I/O points 32points
System's allowable
momentary power failure time Within 20ms
Communication speed 1.25Mbps
Communications method Half-duplex bit serial
Synchronous method Frame synchronous
Transmission path method Duplex loop
Overall loop distance
Max. 10km
(32810ft)
(1km (3281 ft)
station intervals)
Max. 10km
(32810ft)
(2km (6562ft)
station intervals)
Max. 10km
(32810ft)
(500m (1640.5ft)
station intervals)
Number of connectable
stations
Max. 65 stations/loop (1 master station, 64
local/remote I/O stations)
Demodulation method CMI
Transmission format Conforms to HDLC (frame method)
Error control system Retry due to CRC (generating polynomial X16
+ X12 + X5+ 1) and time over
RAS function
The loopback function checks error detection and
cable breakage.
The diagnostic function checks the self link line
Connector 2-core optical connector plug
(Arranged by user*1) ---
Cable used
SI optical fiber
cable
H-PCF optical
fiber cable
GI optical fiber
cable
3C-2V, 5C-2V
equivalent
T r a n s m i s s i o n l o s s M a x . 1 2 d B / k m M a x . 3 d B / k m ---
Sending level -17 to -11 dBm
(peak value)
-17 to -10 dBm
(peak value) ---
Receiving level -32 to -11 dBm
(peak value)
-29 to -10 dBm
(peak value) ---
*1: Specialised skill and specific tools are required to connect the connector to the
opticalfiber cable; the connector itself is a custom product. Please contact your
nearest Mitsubishi Electric System & Service Corporation when purchasing these
products.
REMARK
1) The overall loop distance refers to the distance from
the master station sending port to the master station
receiving port via slave stations.
For both the fiber optic cables and coaxial cables,
The overall loop distance is a maximum of 10km
(32810ft.).
2) For general specifications of the date link system,
refer to the user's manual for the PLC CPU module
that is to be used. Overall distance
M
L1
R2
L3
R4
R5
L6
3. Names and Settings of Each Part
A1SJ71AP21(-S3) A1SJ71AR21
1)
2)
3)
4)
1)
2)
3)
5)
No. Name Description
RUN ON when data link is normal
SD ON during data transmission
RD ON during data reception
F.LOOP •ON while data are received from the
forward loop side
•OFF while data are received from the
reverse loop side
CPU ON during communication with PLC CPU
CRC ON during code check of received data
OVER ON indicating an error when receive data
processing is delayed
AB.IF ON indicating an error when too many
consecutive 1s are received or when the
length of received data is too short
TIME ON indicating an error when the data link
monitoring timer is activated
DATA ON indicating an error when erroneous data
of 2k bytes or more are received
UNDER ON indicating an error when the internal
processing of send data is not done at the
fixed intervals
F.LOOP Turns ON by a reception error on the forward
loop side
1) LED
R.LOOP Turns ON by a reception error on the reverse
loop side
2) Station number setting
switches
X10
X1
STATION
NO.
Set a station number within a range from 00 to 64.
(factory set: 00)
•master station 00
local station 01 to 64
X10 Set a tens digit.
X1 Set a units digit.
Select a mode from the following. (factory set: 00)
No. Mode Description
0 On-line Data link with automatic return
1 On-line Data link without automatic return
2 Off-line Puts this station into cut-off status.
3 Forward
loop test
Checks the forward loop in the
entire data link system.
4 Reverse
loop test
Checks the reverse loop in the
entire data link system.
5,6 Station-to-
station test
Checks a line between 2 adjacent
stations.
7 Self-
loopback
test
Checks hardware of the data link
module, including sending/
receiving circuits in the
communication system.
3) Mode setting switch
MODE
0:ONLINE(A.R.)
1:ONLINE(U.R.)
2:OFFLINE
3:TEST 1(F.L.)
4:TEST 2(R.L.)
5:TEST 3(B.M.)
6:TEST 4(B.S.)
7:TEST 5(S.R.)
8 t o F --- U s e p r o h i b i t e d
Connector For A1SJ71AP21(-S3) 4)
IN
Reverse loop
sending
Forward loop
receiving
OUT
Forward loop
sending
Reverse loop
receiving
Optical fiber cable connector
Connector For A1SJ71AR21 5)
IN R-SDOUT R-RD
Reverse loop
receiving Reverse loop sending
OUT F-SD IN F-RD
Forward loop
sending Forward loop
receiving
Coaxial cable connector
POINT
For details on the settings and the operating method in test mode, refer to the type
MELSECNET, MELSECNET/B Data Link System Reference Manual.

4. Mounting and Installation
This section describes the handling precautions for procedures from
unpacking to installation of the A1SJ71AP21/AR21 and its installation
environment.
For details, refer to the user’s manual for your PLC CPU.
4.1 Handling Precautions
In this section, handling precautions for the module are described.
(1) The module case is made of resin, so do not drop it or apply strong
impacts on it.
(2) Do not remove the PC board from the module case. This may cause a
fault.
(3) Be careful to prevent foreign matter from entering from the module top
during wiring.
(4) Tighten the module fixing screws within the following ranges.
Screw location Torque range
Module fixing screws (M4 screw) 78 to 118N.cm
4.2 Installation Environment
Do not install PLCs in the following environments:
(1) Locations where the ambient temperature is outside the range 0 to
55 .
(2) Locations where the ambient humidity is outside the range 10% RH to
90%RH.
(3) Locations where dewing occurs due to sudden temperature changes.
(4) Locations exposed to corrosive or combustible gases.
(5) Locations exposed to large amounts of highly conductive dust, iron
powder, oil mist, salt or organic solvents.
(6) Locations where the module is exposed to direct sunlight.
(7) Locations where a strong electric or magnetic field is generated.
(8) Locations where the module will be subject to direct vibration or
impact.
5. Cable Connection
5.1 Connecting optical fiber cables
INOUT INOUT INOUT IN
OUT
IN : Connected to previous station's OUT
OUT: Connected to next station's IN
FRONT
Master station No.1
FRONT FRONT FRONT
No.2
5.2 Connecting coaxial cables
INOUT
F-SD R-SD
R-RD F-RD
FRONT
IN
R-RD
F-SD
F-RD
OUT
R-SD
IN R-SD: Connected to previous
station's OUT R-RD
IN F-RD: Connected to previous
station's OUT F-SD
OUT F-SD: Connected to next
station's IN F-RD
OUT R-RD: Connected to next
station's IN R-SD
Master station No.1 No.2
FRONT
INOUT
F-SD R-SD
R-RD F-RD FRONT
INOUT
F-SD R-SD
R-RD F-RD FRONT
5.3 Securing space for the cables
The radius of the fiber-optic cables or coaxial cables must not be smaller
than the allowable bend radius.
When connecting a fiber-optic cable or coaxial cable to a link module, make
sure that there is enough space for the cable to be bent to a larger radius
than the allowable bend radius.
For connector A and bend radius r of the fiber-optic cable, contact Mitsubishi
Electric System & Service Corporation.
Cable Connector
A (mm)
Allowable Bend
Radius r (mm)
3C-2V 23
A
r
Data link
module
Coaxial
cable
5C-2V
30
30
6. External Dimensions
A1SJ71AP21(-S3)
A1SJ71AR21
Unit: mm (inch)
*1: Please contact your nearest Mitsubishi Electric System & Service
Corporation for detail.
WARRANTY
Mitsubishi will not be held liable for damage caused by factors found not to be the
cause of Mitsubishi; machine damage or lost profits caused by faults in the
Mitsubishi products; damage, secondary damage, accident compensation
caused by special factors unpredictable by Mitsubishi; damages to products other
than Mitsubishi products; and to other duties.