Mitsubishi Electric MELSEC-A Series Manual de usuario

User's

Manual

•

type

A2CCPU (P21/R21)

•MITSUBISHI

....

ELECTRIC

•

REVISIONS

*The manual number is given on the bottom left of the back cover.

Print Date *Manual Number Revision

Nov, 1990 IB (NA) 66267-A First edition

•

INTRODUCTION

Thank you

for

choosing the Mitsubishi MELSEC-ASeries of General Purpose Programmable Control-

lers. Please read this manual carefully so that the equipment is used to its optimum. A

copy

of this

manual should be forwarded to the end user.

CONTENTS

INTRODUCTION

•...••...•••••....••.•••••••••••....•••••.•••••••••••••

1-1

-1-11

1.1 General Description of Operation

1-2

1.1.1 ON/OFF data communication between the A2C and the remote I/O module •. . .

1 - 2

1.1.2 Data communication between the A2CCPU and the remote terminal module

.....

1 - 4

1.2

Features.

.................................................................

1 - 5

1.3 General Terms and Abbreviations 1 - 9

1.4 Reference Manuals

.........................................................•

1- 11

2SYSTEM CONFIGURATION

2-1

-2-16

2.1 Overall Configuration ..........................................................2 - 1

2.2

Notes on System Construction 2 - 3

2.3 System Equipment 2 - 8 4

2.3.1 Modules which can be connected to the A2CCPU 2 - 8

2.3.2 Peripheral devices 2 - 15

3GENERAL SPECIFICATIONS

3-1

4A2CCPU

••••••...••••....••••••••••••..••....••••••.•...••••...••••.

4-1

4-94

4.1 Performance ............................................................•..

4 - 1

4.1.1 Repeated operation processing 4 - 4

4.1.2

In~ial

processing 4 - 4

4.1.3 END processing 4 - 5

4.1.4 Timerprocessing and accuracy 4 - 6

4.1.5 Counterprocessing and maximum counting speed 4 - 8

4.1.6 Operation processing at momentary powerfailure 4 - 9

4.1.7 Scantime 4

-10

4.1.8 Watch

dog

timer

(WDl)

4 - 11

4.1.9 RUN. STOP. PAUSE operation processing

4-13

4.2 Functions 4 - 18

4.2.1 Constant scan 4 - 19

4.2.2 Power failure compensation for device data in the A2C

(LATCHfunction) 4 - 22

4.2.3 Running and stoppingthe A2C from external devices

(Remote RUN/STOPfunction) 4 - 24

4.2.4 Stoppingthe sequence program operation retaining outputs (PAUSEfunction)

4 - 26

4.2.5 Status latch

.......................................................•..

4 - 28

4.2.6 Samplingtrace 4 - 30

4.2.7 Offline

sw~ch

function 4 - 33

4.2.8 Setting priority for ERRORLED indication 4 -

4.2.9 Control functions of remote I/O modules and remote terminal modules 4 - 37

4.2.10 Outputfrom the ERRterminals 4 - 41

-i-

I4.3 Fault Detection 4 - 42

4.3.1

SeR-diagnosis 4 - 42

4.3.2 Faultdetection with annunciator

(F)

4 - 47

4.4 ParameterSetting Range 4 - 49

4.4.1

Memory capacity setting 4 - 53

4.4.2 Operation mode at an occurrence of error 4 - 55

4.4.3 STOP

RUN

output mode 4- 56

4.4.4 Entry code registration 4 - 57

4.4.5 Printtitle registration .

.. ..

.. .. ..

...

. .

. 4- 57

4.5 Devices 4 - 58

4.5.1

Device list 4 - 58

4.6

INSTRUCTIONS

4 - 60

4.6.1

Sequence instructions 4 - 60

4.6.2 Basic instructions 4 - 62

4.6.3 Application instructions 4 - 68

4.7 I/O Numbers and Station Number Setting 4 - 74

4.8 Precautions on Handling 4 - 76

4.9 PartIdentification 4 - n

4.10 PartIdentification 4 - 84

4.10.1

Externalview of

A2CCPUP21/R21

4 - 84

4.10.2 Setting for MELSECNET Data Link 4 - 92

4.10.3 Selecting test mode 4 - 93

4.10.4 SeR-loopbacktest

4-94

5 MEMORY ICa, BATTERY, CABLES AND DIN ADAPTER 5

-1

- 5

-10

5.1

MemoryICs 5- 1

5.1.1

Specifications 5- 1

5.1.2 Handling instructions 5- 1

• 5.1.3

Installation............................................................

5- 2

5.2 Battery......................................................................5-3

5.2.1

Specifications..

.....................................................

5- 3

5.2.2 Handling instructions 5- 3

5.2.3

Installation............................................................

5- 4

5.3 Cables 5 - 5

5.4 DINAdapter 5- 7

5.4.1

Specifications..

. . .

.. .. ..

. .

.. ..

. .

....

5- 7

5.4.2 Handling instructions 5- 7

5.4.3 Fixinga

DIN

adapter to a module 5- 9

5.4.4 Mounting to the DINrail 5- 10

-ii-

6 LOADING AND INSTALLATION 6

-1

-6

-11

6.1 Fail-safe Circuit. ............................................................

6 - 1t

6.2 Installation Environment 6 - 1 ,

6.3 Calculation of Heat Generated by the A2C System 6 - 2

6.4

Wiring.

...................................................................

6 - 4

6.4.1 Wiring instructions 6 - 4

6.4.2 Connection between

modules.

.........................................

6 - 8

6.5 InstallingThe A2CCPU 6 - 11

7TEST RUN

••••••••••••••••••••••.•••••••.....••••••••••••...••••••••••

1 - 7 - 4

7.1 Check Points before Test Run 7 - 1

7.2 Test Run Procedures. .......................................................

7 - 3

8MAINTENANCE AND INSPECTION 8 - 1 - 8 - 4

8.1 Daily Inspection

...........................................................•..

8 - 1

8.2 Periodic Inspection

..........................................................•

8 - 2

8.3 Replacement ofBattery......................................................

8 - 3

8.3.1 Battery

IKe

8 - 3

8.3.2 Replacing procedures 8 - 4

9TROUBLESHOOTING

.•••••....••••••••••••••••.•••......•.......••••..

9 - 1 - 9 - 15

9.1 Basic Troubleshooting. ......................................................

9 - 1

9.2 Troubleshooting 9 - 2

9.2.1 Troubleshootingflow

charts.

...........................................

9 - 2

9.2.2 Flow chart used when "POWER" LEDof the A2CCPU has turned off 9 - 3

9.2.3 Flow chart used when "RUN" LEDof the A2CCPU has turned off

...........

9 - 4

9.2.4 Flow chart usedwhen "RUN" LEDof the A2CCPU flickers

..................•..

9 - 5

9.2.5 Flow chart used when "ERROR" LEDhas turned on 9 - 6

9.2.6 Flow chart used when "ERROR" LEDof the A2CCPUflickers

...............•..

9 - 8

9.2.7 Flow chart used when "RD/SD" LEOs of

the

A2CCPU

not flicker 9 - 9

9.2.8 Flow chart used when output load of output module does not turn on 9 - 10

9.2.9 MaKunetion in program download to PC

............................•.....

9 - 11

9.3 Error Code Ust 9 - 12

9.3.1 Error code list 9

-12

APPENDICES

•••••••••.••••••••••..•••....••••....•••.•.•••••..•••••

APP - 1 - APP - 28

APPENDIX1 Outside Dimensions APP- 1

APPENDIX2 Ust of Special Relays APP- 6

APPENDIX3 List of Special Registers APP- 10

APPENDIX4 Instructionsfor Use with Peripheral Devices APP- 20

APPENDIX5 Cautions on Editing Programs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

APP- 28

-iii-

•

1. INTRODUCTION

--------------------

MELSEC·A

Remote I/O

module:

•

1. INTRODUCTION

This manual gives the system, specifications and handling of the A2CCPU,

A2CCPUP21 and A2CCPUR21 General-purpose Programmable Controller

(referred to as A2C in this manual).

The A2C is a building block type CPU module which can construct asystem

including remote I/O modules (I/O modules) and remote terminal modules

(special-function modules)

(*')

without using abase unit.

The A2C uses the MELSECNET/MINI-S3 data link system (*2) (referred to as

MINI-53 in this manual) in place of a base unit for data communication with

the

remote I/O module and the remote terminal module

through

s-core flat

cables or twtsted-pair cables.

Using s-core flat cables,

the

system modules can be arranged close to each

other just as the building block type CPU is used.

Using twisted-pair cables, the system modules can be separated up to 100

meters (328.1

It)

away from each other

(*1.

This feature makes it possible

to install

the

remote I/O module and the remote terminal module to conform

with the arrangement of equipment to be controlled.

IREMARKsl

(1)

.1...

"Remote I/O module" and "remote terminal module" are general terms for the

mcdulee

mentioned below.

Input/output modules connectable to the A2C. Mitsubishl

general-purpose

inverter

FR~Z200

series,

MELSEC-F

series programmable controllers

Remote terminal

module:

Special function modules connectable to the A2C, RS-

232C

interface

modules

See Section

2.3

for names and types of the remote I/O modules and the remote

terminal modules.

(2)

.,.

The MELSECNET/MINI-S3 data link system has been designed to reduce the amount

of wiring between the PC and equipment to be controlled. Since the PC, the remote

I/O module and the remote terminal module are connected with twisted-pair cables

or optical fiber cables, it is possible to install the remote I/O module and the remote

terminal module to suit with the arrangement of equipment to be controlled.

(3)

*3...

Distance allowed when twisted-pair cables of

0.5

mm2(20 AWG) or thicker are used.

The maximum allowable distance is 50 meters (164.1

tt)

when twisted-pair cables of

0.3

(22 AWG) or thinner are used.

-1

1. INTRODUCTION

--------------------

MELSEC·A

1.1 General

Description

Operation

Thissection describesthe datacommunication between

the

A2C,

the

remote

I/O module and

the

remote terminal module.

See Section 4.2

for

the A2C functions.

1.1.1 ON/OFFdata communication between the A2C and the remote I/O module

ON/OFF data communication is performed using inputs (X) and outputs

(Y).

(1) Input/output number assignment of

the

remote I/O module

The

input/output

numbers of the A2C system are assigned from x/yOOO

to X/y1FFin

the

order ofthe station number

to 64) set

for

each remote

I/O module.

Data communication with a remote I/O module is performed using ..

inputs (X) and outputs

(Y)

assigned

for

each module.

'Ill

See Section 4.7 for

the

relationship between station numbers and i/O

numbers.

(2) ON/OFF data communication with

the

remote I/O module

The ON/OFF data communication with the remote I/O module is per-

formed in the refresh mode.

Fig. 1.1 shows the data communication between the A2C and the

remote I/O modules. ,

(b)

ON/OFF

data

output

(Y) is

output.

A2C

Station:

(a) Sequence program execution I-:

CPU

I/O

(c)

ON/OFF

data

from

the

o ,

Y20

input

(x)

module

Is taken in.

Station:

I/O

MINI-S3Iink

~_r,l

n '-'

Y21

I/O

0------

I/O

The sequence

program

uses

input

(X) and

output

numbers

control

remote

I/O

Station:

modules.

When

the

A2C is

running,

operations

(a), (b)

and

(0)

mentioned

below

are

executed

repeatedly.

(a) The sequence program is executed from

step

0 to END (FEND).

(b)

ON/OFF

data

of an

output

(Y) in

the

sequenca

program

output

by the MINI-S3 link.

(c)

ON/OFF

data

from

input

module

taken

In by

the

MINI-S3

link.

Fig. 1.1 ON/OFF Data

Communication

between

the

A2C and

the

Remote I/O

Modules

1-2

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