Mitsubishi MELSEC-A AJ71PT3 User manual

User's Manual
a~-------------------
•
Master
type MELSECNET/MINI
•MITSUBISHI
;"ELECTRIC

•
•

CONTENTS
1. INTRODUCTION ··· ····..·..·..··..··1-1
-1-4
1.1 MINILinkFeatures· · ·..·..·..·..· ·..·..·..·..· ·..· · ·1-2
1.2 Function Block Diagram ··· ·..·.. ····1-4
2. SYSTEM CONFIGURATION 2-1 - 2-9
2.1 Overall Configuration ·..
········· ··2-1
2.2 Applicable A-Series System· ·..·..·..····
·········· ········ ·········· ·..·..·..·.. 2-3
2.3 System Configuration Example 2-4
2.4 Equipment Used with the MINI Link 2-5
2.5 Noteson Configuring the System 2-7
3. SPECIFICATIONS 3-1 - 3-21 •
3.1 General Specifications·..·..·..···..·..····..·····..·.... ····..···..·..
········· .. ········· ..· ·..····..··3-1
3.2 Performance Specifications·..······..······....
········· ..·.... ········· ..·..···..·..···..· ·..·..·..·..·3-2
3.2.1 Performance
specifications················· ..·..·..······..······..· ·.... ······· ·..····..·· 3-2
3.2.2 Optical
fiber cable specifications·..··..·.. ······· ..··.. ······· ..· ····..·..·· 3-4
3.2.3 Twisted
pair cable specifications 3-5
3.3 1/0 List for the PCCPU ·..· · · 3-6
3.4 Buffer Memory· ......····..·..· ······..···· ······..·..·..······ ·..·..········.. ······· ·..·..·..·· 3-9
3.4.1 Buffer memory assignment 3-9
3.4.2 Buffer memory and data location..· · ·..·..·..· · ·..·..· · ·..· 3-10
3.4.3 Buffer
memory assignment and the number of stations occupied·..· ·.. 3-17
3.5 1/0 Refresh······· .. ··········· ..·.... ······..·..·.... ·..·.... ·..·.... ····.... ····.. ·············· ..···..······..· 3-18
3.5.1 Relation between PCCPU operating status and 1/0 refresh 3-18
3.5.2 1/0 refresh at occurrence of communication error ·..· · · · 3-19
3.5.3 1/0 delay time in remote 1/0 stations · ·3-20
4. PRE-OPERATION SETTING AND PROCEDURE 4-1 - 4-14
4.1 Master
Module Handling Instructions 4-1
4.2 Pre-Operation Setting and Procedure 4-2
4.3 MasterStation Nomenclature and Settings ·..·..· · ·..· · · · 4-3
4.3.1 Master
module nomenclature ·..·..· · ·..·..· ·..· ·..·.. ·4-3
4.3.2 Mode setting switch··· ..·..·..····..·..··.. ······· ..·.. ··········· ..·.. ·············· ..······..···.. ··4-4
4.3.3 Monitor station number setting switch · · ·..· ·..·.. ·4-5
4.4 Setting the Remote 1/0 Station Numbers · ·..·..·..· · ·..· 4-6
4.5
Wiring 4-8
4.5.1 Handling instructions
for optical fiber and twisted pair cables 4-8
4.5.2 Connection
of optical fiber cables · · · · · ·..·.. ·4-8
4.5.3 Connection oftwisted pair cables 4-10
4.5.4 Connection
of units for both optical and twisted pair data links 4-11
4.6
TestMode········· .. ······· ..····.. ········ .. ············ .. ················ ..····..········..······..·..······.. ·4-12
4.6.1 Line check mode ..·..· 4-12
4.6.2
Luminous energy check mode · · · · · · · 4-14
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18(NA) 66164·A

•
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5. PROGRAMMING···························································································5-1 - 5-16
5.1
Programming Procedure..·..···..·· ·..·..· ····..·..· ·..·..·..·..· ·· ·· ·..·..·..···5-1
5.2
Writing the Initial Data 5-2
5.3
Programming for Batch Refresh Type Remote 1/0 Units 5-3
5.3.1 Buffer
memory for batch refresh 5-3
5.3.2 Reading the
input data 5-4
5.3.3
Writing the output data 5-5
5.4
Programming for Partial Refresh Type 1/0 Units· · · · · 5-6
5.4.1 Buffer
memory for partial refresh station 5-6
5.4.2 Setting
the partial refresh stations 5-9
5.4.3 Reading
the input data 5-11
5.4.4
Writing the output data 5-12
5.5 Program Example ·..·..
··5-13
6. TROUBLESHOOTING ·6-1 - 6-10
6.1 Data Communication Errors 6-1
6.1.1 Data
communication continue error · · · · · 6-1
6.1.2 Data communication stop error 6-2
6.2 Troubleshooting 6-3
6.2.1 General
troubleshooting flowchart 6-3
6.2.2 Master
module RUN LED off 6-4
6.2.3 Master
module RDISDLED off" 6-5
6.2.4 Remote 1/0 staion RDISDLED
off 6-6
6.2.5
Input fault ..··..·..·..·..·..· ·..·..· · ·..·..· ·..··..·..· ·..· 6-7
6.2.6
Output fault ·..·..·..· ·..·..· ·..·..·..·..· ·· ·..···..·..·..·· 6-9
APPENDiCES············································ APP-l - APP-7
Appendix 1. Optical ConnectorManufacturing Method · · APP-l
Appendix 2. Communication Data Assignment Sheets APP-4
Appendix 3. Dimensions APP-7
JB(NA) 66164-A

•
•
1. INTRODUCTION
2. SYSTEM CONFIGURATION
3. SPECIFICATIONS
,
4. PRE-OPERATION SETTING AND PROCEDURE
5. PROGRAMMING
6. TROUBLESHOOTING
APPENDICES

I
1. INTRODUCTION
1. INTRODUCTION
This manual includes specifications, handling instructions and
programming procedures for the AJ71PT32 data link module
(referred to as "master module") for use as the master station of a
MELSECNET/MINI data link system (referred to as
"MINI link").
The AJ71PT32 is a master
unit used for both optical and twisted
pair data links. The AJ71PT32 and AJ71P32IT32 have the same
functions and are compatible with each other.
The 1/0 specifications
of MINI link remote 1/0 stations are given in
the MELSECNET/MINI Remote 1/0 User's Manual.
The general CPU names used in
this manual include the following
CPU models:
(1) PC CPU
A1(El. A2(El. A3(E)CPU(P21/R21)
A1N, A2N, A3NCPU(P21/R21)
A3HCPU(P21/R21)
AOJ2CPU(P23/R23)
(2) Building block
type CPU
A1(E), A2(El. A3(E)CPU(P21/R21)
A1N, A2N, A3NCPU(P21/R21)
A3HCPU(P21/R21)
(3) Compact
type CPU
AOJ2CPU(P23/R23)
POINT I
In this manual, the 1/0 addresses of the master module
assume that the master module is loaded on slot 0 of the
main base unit used with the building block type CPU. If
the master module is loaded on any other slot or is used
with the AOJ2CPU, its 1/0 addresses should be determined
in accordance with the CPU module 1/0 address assign-
ment.
1-1
•
•
IB (NA) 66164-A

REVISIONS
*The manual number is given on the bottom left of the back cover.
Print Date £lManual
Number Revision
Dec., 1988 16 (NA) 66164-A First edition

INTRODUCTION
Thank you for choosing the Mitsubishi MELSEC-A Series of General Purpose Programmable
Controllers. Please read
this manual carefully so that the equipment is used to its optimum.
Acopy of this manual should be forwarded to the end User.
•
•
IBINA)66164-A

•
•
1. INTRODUCTION
1.1 MINI Link Features
IMELSEC;4
The MINI link is a remote 1/0 system which uses the master
module on the main or extension base unit.
This system is designed to reduce wiring work costs for 1/0
devices installed away from the PC CPU.
For example,
remote 1/0 stations installed to a conveyor line,
machines and
equipment, etc. can be controlled from the master
module via optical fiberltwisted pair cables.
(1) Max. 512 link
points
One master module allows up to 64 remote 1/0 stations to be
connected and up
to 512 inputsloutputs to be controlled.
The number of master modules loaded is not limited.
(2) Fast 1/0 refresh
The I/O refresh
time between the master and remote 1/0
stations is between 3.2 and 3.9ms for 512 points.
(3) 1/0 refresh system
Abatch
or apartial refresh system is available in accordance
with the remote 1/0 unit used.
(a) Batch refresh
Remote 1/0 station data is transferred by one 1/0 refresh. 8
input or output points can be controlled by a remote 1/0
unit which occupies 1station.
(b) Partial refresh
Remote 1/0 station data is transferred by several 1/0
refreshes. This system allows many 1/0 points to be
controlled by a few occupied stations, e.g. 64 input and 64
output points can be controlled by the AJ35PTF-128DT
which occupies 4stations.
(4) Remote 1/0
unit types
The following remote 1/0 units and module are available:
(a) Stand-alone
remote 1/0 unit
Has a high-strength, drip-proof casing made of aluminum
diecast for installation onto a machine and may be used as
arelay box.
Its protective structure
conforms to IP54G (JEM1030).
(b)
Compact remote 1/0 unit
Same in style as the AOJ2 1/0 units. Models available are
32-point dedicated input, 24-point dedicated output, 16-
point input/12-point output and 32-point input/24-point
output compound units.
(c) Partial refresh
type remote 1/0 unit
Refreshes remote 1/0 station data in groups of given
points.
Allows many I/O points to be controlled with a few
stations occupied by the master module.
(d) AJ72PT35 link module
Allows the Aseries building block type 1/0 modules to be
used in
the MINI link system.
1-2
•
18(NAI66164-A

I
1. INTRODUCTION
IMELSEC;4
(5) The MINI link may be used with the MELSECNET system. Any
of the tier two master station and the tier three master station
and local stations in
the MELSECNET may be used as the
master station in the MINI link.
(6) Ease
of machining optical cable connectors
Optical cable connectors can be machined easily by the user
with the tool kit available from Mitsubishi.
(7) Ease of checking luminous energy in optical data link system
In
luminous energy check mode of the master module,
luminous energy can be checked by connecting the optical
power tester to the receive connector of each remote I/O
station.
REMARKS I
The MINI linkdoes not have a loopbackfunction as it has only one loop of data link
cables.
1-3
•
•
IS (NA) 66164-A

1. INTRODUCTION
__________ --..;/MELSEC;4
1.2 Function Block Diagram
Fig. 1.2
shows the sequence of remote I/O station data in the MINI
link.
(1) I/O refresh is
continuously executed between the master
module and remote I/O stations at intervals of 3.2 to 3.9ms
(512 points).
(2) I/O refresh and master station sequence
program are executed
asynchronously,
with the exception that I/O refresh is stopped
while the IFROM [jQJ instruction is executed from the PC
CPU to
the master module.
•(3)
Input data from a remote I/O station is read from the master
module buffer memory by the IFROM I instruction .
(4)
Output data to a remote I/O station is written to the master
module buffer memory by the ITO I instruction.
Master module Remote 1/0 station
•
CD
r- r- r- r-
r-
Master module
~~
1/0 signals
m@m
Uu Input
oj!!
um
••
n,
Optical/twisted
oj!!
mu
oS
su's
OJ air data link m
oj!!
m
c,
®
.~
.s
,'g
"0
U
<=>
s
Buffer memory
s
~
~
C"
Uc
~
c
c,
data transfer
oj!!
~
Output
~
<:
:>
sssx
rn
E"rn w
memory
c
--
'-----
'-----
--•
Fig. 1.2 Function Block Diagram
1) I/O signals assigned to the master module. These signals are
used
for communication between the PC CPU and master
module. For more information, see Section 3.3.
2) Allows remote I/O station input data to be read, output data to
be written, a faulty station to be read, etc. Buffer memory data
transfer is made by the IFROM I and ITO I instructions in the
sequence program. For full information of the buffer memory,
see Section 3.4.
3) Data
link start is directed from the sequence program. After
data transfer is initiated, I/O refresh is continually executed
independently of the sequence program execution.
1-4 IS (NAI 66164-A

2. SYSTEM CONFIGURATION ________ _ __ / M ELSEC ;4
2. SYSTEM CONFIGURATION
2.1
Overall Con figur ation
The m aster mod ule may be used on the A series base
uni t in ei the r
of the building block type CPU (Fig. 2.1) and compact t yp e CPU
(Fig. 2.2) syste
ms as sho wn bel ow :
(1) Buil din g block type CPU system
Build ing bloc k type
CPU roo oute •
•
A32B
A35B
A388
•••••••••••
j .J 1m lU IU
.. ~ .... ~ ..
E xtens ion cable
D
Main base un it
AC 068
Type AC128
AC30 B
Ty pe
MELSECNETtM INl
data link mo dul e
Type I AJ71PT32
•
7
•
Optical fiber/twisted
pair cable
Rem ote va stat ion
I REMAR KS I
- po' •••••••
t i ~ m RI .
. -- -
The remote 1/ 0sta tion specifica tio ns are given in
the ME LSECNET/M INI Rem ote I/O
User 's M anua l.
T ype
A658
AG8S
A55B
A58B
Fig _ 2.1 B uilding B lock T ype CPU Sy st em Co nfig u rat ion
2-1 R ". :. ,t
'.-,.::,

2. SYSTEM CONFIGURATION
(2) Com pact ty pe CPU system
Type
Com pac t typ e CPU unit
D
•Ty
pe IAOJ2C04B
AOJ2Cl 0B
Extension cable
Extension base uni t
D
II
A6SB
A55B
. P' ~ •••••••
-~ -: - ~ 1 ~ 11 1l1 1l
........ 0=: -;.. ~ -.,
~ . -. .. '
Type
Type IAJ 71PT3 2
MEl SECNET fMIN I
dat a lin k module
Op tical
fiber/t wis ted
pai r cable
•
Rem ote 110 sta tion
IREMARKS I
•F
or rem ot e 110 specifications, see the MEL SECNET /MIN I Rem ote 11 0 User's
Man ual.
Fig . 2.2 Co m pa ct Ty pe CPU S y st em C onf igur ati on
2-2

2.
SYSTEM
CONFIGURATION
__________
-..JIMELSEC;4
~.~
Applicable A-Series
System
The master
module
can be used
with
the
following
CPU
models:
Applicable
model
AOJ2CPU A1CPU
A2CPU
A3CPU
A3HCPU
A1ECPU
A2ECPU
A3ECPU
A1NCPU
A2NCPU
A3NCPU
There is no
limit
to
the
number
of
master
modules
loaded. The
master
module
may be loaded on any
slot
of
the
base
unit
with
the
following
precautions:
(1) When using
the
master
module
with
the
A558 or A588
extension bases (i.e.
those
without
power
supplies), select
the
power
supply
for
the
main
base
unit
in accordance
with
the
corresponding CPU User's Manual.
•
(2) The
master
module
may
be loaded to
the
master station or a
local station
but
not
into
a
remote
1/0 station in a MELSECNET
data
link
system. The
following
CPU
models
are required
for
the
MELSECNET data link system.
Applicable
models
to
master
or local
stations
AlIE)CPUP21/R21
A2IE)CPUP21/R21
A3IE)CPUP21/R21
A3HCPUP21/R21
AOJ2CPUP23/R23
A1NCPUP21/R21
A2NCPUP21/R21
A3NCPUP21/R21
(local only)
(3) The master
module
cannot be used on
the
last
slot
of
the
seventh extension stage in an A3(E)CPU(P21/R21) system.
••
2-3 IB (NA) 66164-A

2. SYSTEM CONFIGURATION
l
2.3 System Configuration Example
/MELSEC;4
The MINI link is configured by loading the master module to the
main or extension base unit used with the PC CPU as the master
station.
In
addition to the Aseries remote 110 units, the MINI link allows
use of the MELSEC-F series PCs, Mitsubishi FR-Z200 series
transistorized inverters, etc.
Fig. 2.3
shows an example of adata link system configuration.
MELSECNET/MINI master station
•
•
0
00
0
~
:0
-:
DO
~
~
Building block or
compact type CPU
brl
iI: :s
Mitsubishi FR-Z200
series transistorized Stand-a
f]]'
inverter remote
":'1
..-(optical data link only)
;I~
r""'<~
SL..J
I\~
t~ ~ p~
MELSEC-F series PC 0
~
\/Compact remote
110 unit
L..J
0
.n
S
~
1n
~
~
I'----
~
0
~
n
,J U
lone
1/0 unit
I
AJ72PT35 link module
(Remote I/O module for
use with building block
type 110 modules)
IREMARKS I
Partial refresh type
remote 1/0
unit
(1) Optical fiber and twisted pair cables used depend on the unit connected.
Fig. 2.3 System Configuration Example
2-4 18 (NA)
66164-A

2. SYSTEM CONFIGURATION
2.4 Equipment Used with the MINI Link
IMELSEC;4
I
Equipment Type
Description
Number
of Points
Occupied
AOJ2CPU(P23/R23) Program capacity: 7K steps
Number of 110 points: 336 -
A1CPUIP211R21) Program capacity:
A1ECPU(P21/R21) 6K steps
A1NCPU(P21/R21)
Number of 110 points: 256 -
A2CPU(P21/R21) Program capacity:
CPU module
A2ECPU(P21/R21) 14K steps
A2NCPU(P21/R21)
Number of 110 points: 512 -
A3CPU(P21/R21) Program capacity:
A3ECPU(P21/R21) 30K steps X 2
A3NCPU(P21/R21)
Number of 110 points: 2048 -
A3HCPU(P21/R21) Program capacity: 30K steps X 2
Number of 110 points: 2048 -
Data link module AJ71PT32 MELSECNET/MINI master
unit for optical 32 points
and twisted pair data links
2-5 18(NAl 66164-A
•
•

•
•
2. SYSTEM CONFIGURATION
Equipment Type Description Remarks
1-core connector
for use with the optical
fiber cable. Consists of the following:
Optical fiber
Equipment Quantity
cable CA9104AP
Housing
1
connector Ferrule 1
Sleeve 1
For assembling optical fiber cable con-
The optical fiber cable connector
and assembling tool kit are only
nectors. Consists of the following:
used with the plastic fiber.
Assembling
Equipment Type Quantity
CT9004P
Fiber stripper
snOOD 1
tool kit Fiber
cutter CV1000 1
Fiber damper
FC1000 1
Replacement blade for cutter
-1
Optical power
HT-101P For
measuring the luminous energy of
tester the MINI link.
Optical
fiber
---
Optical fiber cable for MINI link. User prepared in accordance
with
cable
Section 3.2.2.
Twisted pair
---
Twisted pair cable for MINI link. User prepared in accordance
with
shield cable Section 3.2.3.
Cable-through
---
For sealing cables
into astand-alone User prepared.
fitting remote 110 station.
2-6
I

2. SYSTEM CONFIGURATION
2:5 Notes on Configuring the System
The following must be noted for the MINI link system to protect
remote
110 stations from input fault.
(1) For prevention
of input fault at power-on and -off
(a) The master station must powered up after or simul-
taneously with remote 110 stations.
(b) The master station
must powered down before or simul-
taneously with remote 110 stations.
REMARKS I
The following power supplies are available for remote 110 stations. For further
information, see the MELSECNET/MINI Remote
110 User's Manual. .
(a) 110 unit power supply ····················Internally converted to 5V DC and used in •
the internal circuit of the remote I/O
station.
(b) Input external supply power··········· Power supply for the input remote I/O
unit only.
(c) Output external supply power········· Power supply for the output remote
110
unit only.
(2) For prevention of input fault due to instantaneous power
failure of remote 110 station
Input fault may be caused by instantaneous power failure
occurring at the remote
110 station power supply.
I
(a) Input fault caused by instantaneous power failure
The remote
110 hardware uses the I/O unit power supply of
5V DC converted by
itself from 24V DC).
If instantaneous
power failure occurs at the remote 110
station, the time elapsed until 5V DC in the remote 110 is
switched off) becomes greater than
the input unit switch-
off response time. Hence, input fault occurs if liD refresh is
executed
within the period of time indicated by @below. •
®
-=-
\
-
Input (Xn)
External
supply 24V DC
(For liD
unit power supply
and input external supply power)
Internal 5V DC
When the
input external supply power is switched off,
input (Xn) is switched off after the input unit switch-off
response time has elapsed.
2-7 16
INA} 66164-A

•
•
2. SYSTEM CONFIGURATION
(b) For prevention of input fault
Cables should be wired so that the same power supply
provides power to the power supply module, stabilizing
power supply, and input external supply power (AC input
only).
Power supply module Master station
N
<$>
"
~
0-
;:::
~
:;t Data link cable
~
J/ Remote 110 station (input unit)
Q.
.5
<)
-Stabilizing I/O
unit
0power 24V DC power supply
supply
II Input external
supply power
Power supply module Master station
, N
<$>
"
~
0-
~
~ Data link cable
~
Q.
YRemote 1/0 station (input unit)
.5
o
«
~
Stabilizing
110 unit
power 24V DC power supply
supply
II Input external
supply power
Fig. 2.4 Power Supply Wiring Example
2-8
I
IB lNAI 66164-A

2. SYSTEM CONFIGURATION __________ -....IIMELSEC;4
IREMARKS I
Voltage drop should be taken into consideration when selecting and routing
cables for supplying power from one power supply to several remote 110 units.
v,
v,
C::=:J
Stabilizing
power h+I, /I,
~
supply \V/\1
R,
R,
~
~
I, I, •
Remote 110 station 1 Remote
110 station 2
V1 : Voltage drop between stabilizing power supply and remote 110 station 1
V2: Voltage drop between remote 110 stations 1 and 2
R1 : Electrical resistance between stabilizing power supply and remote va station 1
R2: Electrical resistance between remote 110 stations 1 and 2
I1 : Current consumed by remote
110 station 1
I2: Current consumed by remote I/O station 2
(1) Calculating the voltage drop
I
v, - R, X(I, + 1,)
V, - R, X I,
(2) Calculating the receive terminal voltage of remote 1/0 station
(Receiving end voltage
of remote 1/0 station 1) =(stabilizing
power supply voltage) - V,
(Receiving end voltage of remote 1/0 station 2) =(stabilizing
power supply voltage) - V, - V, •
The remote 1/0 station may be connected if its receiving end
voltage is equal to
or greater than its rated voltage.
2-9 IB(NAl66164·A