Mitsubishi MELSEC-A AJ71PT3 User manual

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

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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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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

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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
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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.
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IBINA)66164-A

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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.
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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
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IS (NA) 66164-A