Mitsubishi Electric MELSEC-A, MELSEC-A A2CCPU, MELSEC-A A2CCPUP21, MELSEC-A A6DIN3C, MELSEC-A A2CCPUR21 User Manual

User's

Manual

_

type

A2CCPU (P21/R21)

• MITSUBISHI

....

ELECTRIC

I

•

REVISIONS

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

I

Print Date

Nov, 1990

*Manual Number

IB (NA) 66267-A First edition

Revision

•

INTRODUCTION

Thank you

I

lers. Please read this manual carefully so that the equipment is used to its optimum. A manual should be forwarded to the end user.

for

choosing the Mitsubishi MELSEC-A Series of General Purpose Programmable Control-

copy

of this

1

INTRODUCTION

1.1 General Description of Operation

1.1.1 ON/OFF data communication between the A2C and the remote I/O module • . . ...1 - 2

1.1.2

1.2

Features.

1.3

General Terms and Abbreviations 1 - 9 Reference Manuals

1.4

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

Data communication between the A2CCPU and the remote terminal module

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

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

Flow chart used when "RUN" LEDof the A2CCPU flickers Flow chart used when "ERROR" LEDhas turned on 9 - 6 Flow chart used when "ERROR" LED of the A2CCPUflickers Flow chart used when "RD/SD" LEOs of Flow chart used when outputload of output module does not turn on 9 - 10 MaKunetion in program downloadto PC

Error code list 9

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

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

charts.

of Special Relays APP- 6

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

..................•..

...............•..

the

A2CCPUdonot flicker 9 - 9

............................•.....

9 - 1 - 9 - 15

APP - 1 - APP - 28

..

9 - 2

..

9 - 4 9 - 5

9 - 8

9 - 11

-12

10

APP- 28

•

-iii-

1. INTRODUCTION

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

INTRODUCTION

1.

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

A2CCPUP21 and A2CCPUR21 General-purpose Programmable Controller

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

MELSEC·A

(referred to as A2C in this manual).

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

(special-function modules)

The A2C uses the MELSECNET/MINI-S3 data link system

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

remote I/O module and the remote terminal module

the

cables or twtsted-pair cables. Using s-core flat cables,

the

other just as the building block type CPU is used.

without using a base unit.

(*')

(referred to as

(*2)

through

s-core flat

system modules can be arranged close to each

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

This feature makes it possible

meters (328.1 to install

the

away from each other

It)

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

(*1.

with the arrangement of equipment to be controlled.

IREMARKsl

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

.1...

(1)

(2)

(3)

mcdulee

Remote I/O

Remote terminal

See Section

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

.,.

*2

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.

Distance allowed when twisted-pair cables of

*3...

The maximum allowable distance is 50 meters (164.1

0.3

mentioned below.

module:

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

2.3

2

(22 AWG) or thinner are used.

mm

Input/output modules connectable to the A2C. Mitsubishl

general-purpose

series programmable controllers

Special function modules connectable to the A2C, RS-

interface

232C

inverter

modules

0.5

FR~Z200

2

(20 AWG) or thicker are used.

mm

when twisted-pair cables of

tt)

series,

MELSEC-F

-1

1

1. INTRODUCTION

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

1.1 General

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

DescriptionofOperation

Thissection describesthe datacommunication between

I/O module and See Section 4.2

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

(1) Input/output number assignment of

input/output

The to X/y1FFin I/O module.

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

inputs (X) and outputs

See Section 4.7 for numbers.

the

remote terminal module.

for

the A2C functions.

the

remote I/O module

numbers of the A2C system are assignedfrom x/yOOO

the

order of the station number(1to 64) set

(Y)

assigned

the

relationship between station numbers and i/O

for

each module.

MELSEC·A

the

A2C,

for

each remote

the

remote

(Y).

'Ill

(2) ON/OFF data communication with

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. ,

(a) Sequence program execution

X

o ,

H

?

,

~_r,l

n '-'

I

Y20

Y21

~

The sequence

outputMnumberstocontrol

modules.

When

the

(a) The sequence program is executed from

ON/OFF

(b)

ON/OFF

(c)

A2C is

data data

program

running,

of an fromaninput

uses

output

input

remote

operations

(Y) in

moduleistaken

(X) and

I/O

(a), (b)

the

sequenca

-:

and

(0)

mentioned

step

0 to END (FEND).

programisoutput

In by

the

Station:

MINI-S3

the

(b)

ON/OFF

A2C

I

CPU

/'

(c)

ON/OFF

input

MINI-S3Iink

0------

I/O

n

below

are

executed

by the MINI-S3 link.

link.

remote I/O module

dataofoutput

data

(x)

module

repeatedly.

I/O

from

Is taken in.

I/O

Station:

(Y) is

Station:

the

Station:

5

9

~

output.

1

41

I/O

Fig. 1.1 ON/OFF Data

Communication

between

1-2

the

A2C and

the

Remote I/O

Modules

1. INTRODUCTION

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

(3)

Input/output

data

The remote I/O modules is as described below.

(a) To take in an ON/OFF change from

maximum is required.

response time

communication response time between the A2C

the

MELSEC·A

module, 1 scan at

input

and

the

(b) When an output ON/OFF is changed by the sequence program, 1

scan at maximum is required to module.

(c) When ON/OFF control of the

input

the

of ON/OFF status of the output module changes after an ON/OFF changed.

module, 2 scans at maximum are required till the

output

the change to

moduleis done by ON/OFF data

the

output

input

1-3

1. INTRODUCTION

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

1.1.2

Data communication betweenthe A2CCPUand the remote terminal module

MELSEC·A

(1) Maximum

A maximum of 14 remote terminal modules (a maximum of 7 AJ35PTFR2 RS-232C modules) can be connectedto

(2) Data communication with remote terminal modules

(a) Perform the following initial setting.

1)

2) Protocol

(b) Execute data communication with the FROM/TO instruction.

See the ACPU Programming Manual (Common Instructions) details of the FROM/TO instruction.

number

of remote terminal modules to be connected

The first station

See Section 4.2.9

number

for

of

the

remote terminal module

details of initial setting.

(b)Transmission of

I

the

A2C. (See Section 2.2.)

executing TO instruction

designated

data

by

for

4

(a) Sequence

HXf

0

n

!=:i?

..!.-

program

I

execution

TopIH91KOIooIK11-

,

cOmPI~ignal

@[]

Data

communication (a)The FROMITO and PRC (b)The request to

1)

At FROM

2)

TO

instruction

(c) The remote terminal

Cd)

The A2C turns ON terminal

Fig.

module.

1.2

with the remote terminal

send

designated

instruction

module

the

Data

Communication

I

PRCIM1IYOI-

Y21

instructions

data

execution

sends the

complete

signal

A2C

Station:

of

data

A2C

CPU

MINI-S3Iink

I/O

1------

n

described

by

executing

send or receive to

complete

and

the

Remote

-:

module

are executed by the sequence program.

or the data is transmitted

: Data

completion when it received the send/receive

between

is executed as

send

request

sending

signal

the

I/O

Station:

below.

the FROMITO instruction.

the

A2C.

signal

TermInal

Station:

5

from

the

9

(c)

remote

Module

1

Remote

terminal

module

Tra~mission

of

complete

signal

•

(3) Response time

Communication of

8

data with one FROM/TO instruction requires

proximately 400 msec (when scan time is 100 msec). •

1-4

ap-

...

1. INTRODUCTION

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

1.2

Features

MELSEC-A

I

A2CCPU

The A2C has

(1)

Compact (a)

(b) The A2CCPUP21/R21

(c) The A2CI/O

80

mm

(3.15

170

mm

(6.69

in)

the

following features.

size

The

A2C

has

compact

outside

dimensions:

170

mm

(6.69

in)(height) x 100 mm (3.94 in)(width) x 80 mm (3.15 in) (length)

data

link

module

has

compact

outside

dimensions : 170 mm (6.69 in)(height) x 170 mm (6.69 in)(width) x 80 mm (3.15 in)(length).

module

in)

A2CCPUP21/R21

has a short

80

(3.15

170

mm

(6.69

in)

width

mm

in)

of 64 mm (2.5 in).

170

mrn

(6.69

A2CI/O

module

in)

80

(3.15

mm

in)

Fig.

1.3

A2C

Outside

(2) 512 points of

input/output

The A2C is capable of controlling

specified between

X/YO

Dimensions

control

input/output

and X/Y1FF.

operation at 512 points

170

mm

(6.69

in)

(3) A maximum of 8K steps can be contained in one program.

With sequence instructions, basic tions, a maximum of 8K

program. Also,

the

user can be run in combination with a

microcomputer

steps

instructions

can be

programs

and contained and utility

sequence

application

in one

programs

program.

(4) Data link modules usable as master stations or local stations

The A2CCPUP21/R21 can be used as either station in

the

MELSECNET link system.

The A2CCPUP21/R21 cannot be used as

a master station or a local

the

masterstation for

tier.

instruc-

sequence

made by

the

third

1-5

1. INTRODUCTION

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

When

the

-

A2C

0

I/O

--

modules

l

I

(5) Cable connection between modules

Cables designed exclusively for

are used

between

are

arranged

for

connection between the A2C and

the

A2CI/O modules.

sidebyside

A2CI/O module

the

\

Cable

MELSEC·A

A2C or twisted-pair shield cables I

the

A2CI/O module

and

When

the

I/O

A2C

-

0

modules

0

-

are

arranged

/

Twisted-pair cable

Fig.

1.4

apart

Connectionofthe

I

A2CI/O module A2CI/O module

A2CI/O module

A2C

System

•

1-6

1. INTRODUCTION

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

Remote terminal

1

A2CI/O

II

(6) Connection with

minal modules is possible. The A2C can be connected with the MINI-53 link remote I/O modules,

remote terminal modules. (See Section 2.3.1.) The

A2CI/0

modules can be used together.

A2CCPU

module

Fig.

"

Remote

1.5

I

11

Use

module

MELSEC.A

the

MINI-53 link remote I/O modules and remote ter-

modules, MINI-53 link remote I/O modules, remoteterminal

I/O

with

II

module

the

]1

MINI·53

A2CI/O

~

module

Link

Twisted-pair cable

JI

Modules

(7) Vertical and horizontal positions and mounting on a flat base are

possible. The A2C and

tions.

0

-

=

r-'-

A2CI/0

= 0

0

~

Vertical Horizontal

Fig.

1.6

Installing Positions of

modules can be installed in three different posi-

Front

1

111111

~

the

A2C and A2CI/O

;:;

~

FI~t

b'-sO///

Modules

~

1-7

1. INTRODUCTION

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

HOOKfor removing the

module from the DIN

-.

\

Fig.

MELSEC·A

(8) Can be mounted to

The A2C and A2CI/O modules are usually mounted directly

panel or equipment to be controlled using screws. Using adapter, however, the A2C modules can be mounted to

(A clearance of 4 mm (0.16 in) between modules is obtained when DIN adapters are mounted side by side without leaving clearance between them. (See App. 1.)

A2C

0

-

=

-

=

t

A2CI/O

r---

r----f

the

module

DIN rail.

/Nrall

\

the

DIN rail adapter

V-;;;N

1[1

V

tr

0

1.7

~

A2C

and

A2CI/O

~

Modules

Mountedtothe

DIN Rail

to

a control I

the

DIN rail

DIN rail.

the

rail

1-8

1. INTRODUCTION

I

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

1.3

General

Terms

MELSEC-A

and

Abbreviations

General terms and abbreviations used in this manual are explained below.

(1) A2C

the

An abbreviation of troller.

In case A2C is described as A2CCPU or A2CCPUP21/R21.

A2CI/0

(2)

A general term for as

(a) 32-point (b) 32-point (c) 32-point I/O modules

the

A2CCPU.

the

A2CCPU

module

output

input

A2CCPU general-purpose programmable con-

should

the

modules

be discriminatedfrom

following I/O modules which are of

the

A2CCPUP21/R21,

the

same

type

for

See Section 2.3

(3) A2C special function module

A general term for

the

same

typeasthe (a) High speed (b) Analog-digital conversion module (c) Digital-analog conversion module

See Section 2.3 for modules.

(4) MINI-S3 link

An abbreviation of

(5) Peripheral devices

A general term

type classification of

the

following special function modules which are of

A2CCPU.

counter

for

module

type

classification of

the

MELSECNET/MINI-S3

A6GPP, A6PHP, A6HGP and A7PU.

the

A2CI/0

the

data

modules.

A2C special function

link system.

1-9

1. INTRODUCTION

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

(6) Remote I/O module

MELSEC·A

A general term (a)

A2CI/0

(b) MINI-53 link remote I/O modules

1) Out-of-panel

2) Compact

3) AJ72PT35 type link module

4) MELSEC-F series programmable controllers

5) Mitsubishi general-purpose inverters See Section 2.3

applicable MINI-53 link remote I/O modules.

(7) Remote module

A general term

(8) Remote terminal module

A general term link remote terminal modules.

for

the

modules

type

for

following modules.

type

remote I/O modules

for

remote I/O modules and remote terminal modules.

the

A2C special function modules

type

classification of

A2CI/0

and

modules

the

MINI-53

I

and

•

See Section 2.3 for and

applicable MINI-53 link remote terminal modules.

type

classification of A2C special function modules

41

1

-10

1. INTRODUCTION

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

1.4

Reference

I

Manuals

Refer to

(1) ACPU Programming Manual (Fundamentals) : IB(NA)-66249

(2) ACPU Programming Manual (Common instructions) : IB(NA)-66250

(3)

(4) MELSECNET/MINI-S3 Batch Refresh

the

manuals listed below to use

For details of of program necessary for

For details of operation by tions

and application instructions feasible with the A2C.

A2CI/0

For specifications and outside dimensions of

Manual:

the

programming method, devices, parameters and kind

Module User's

IB(NA)-66215

the

Manual:

the

A2C.

programming for

sequence instructions, common instruc-

IB(NA)-66236

Type

MELSEC·A

the

A2C.

the

A2CI/0

Remote I/O Module User's

modules.

For specifications and modules.

(5) MELSECNET(II) Data Link Reference

For specifications functions, and programming of data

link system.

(6) AJ35PTF-R2

66219

For specifications and using

the

(7) Special Function Modules Manual

specifications,

For modules used.

(8) MELSEC-F Series Programmable Controllers Manual

For specifications, handling and programming for PCs.

Type

RS-232C interface module.

handlingofthe

RS-232C Interface Module User's

handling

and

batch refresh

Manual:

for communication with calculators

programming

IB(NA)-66263

the

for

the

type

remote I/O

MELSECNET(II)

Manual:

special

MELSEC-F series

IB(NA)-

function

(9) FR-Z200 Series General-Purpose Inverters Manual

the

For specifications and handling of inverters.

1- 11

FR-Z200 series general-purpose

2. SYSTEM CONFIGURATION

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

2.

SYSTEM

2.1

Overall

~

Memory

Type[jKROM

~

DIN

Type

adapter

A6DIN2C

CONFIGURATION

Configuration

+

I-

~

CPU

module A2CCPU

Type

(P21/R21)

+

s.ccre

flat

(A2C-005)

Twlsted-pafr shield

cable

•

.....

•

....

...

~

...

•

...

~

A2CI/O

module

lIJ

A2C

special

function module

MELSEC·A

I

....

.....

•

~

.....

•

DIN rail

..

DIN

Type

~

adapter

A6

DIN[

jC

For

24 VDC

power

•

supply

...

..

...

MINI-53

remote

AJ35PTF-R2

link

I/O

module

RS-232C interface

module

~-nl

~.!

"I

I

I I

lL5

Power

Type

pose

~

supply

module

A66PC

eral

power

supply

[]

•e

,

I

~

....

~

....

.

~

....

5-core

flat

(A2C-005)

Twisted-pair

shield

cable

t

•

Fig. 2.1

Overall

2-1

Configuration

i

2. SYSTEM CONFIGURATION

I

MELSEC-A

AC30R4

cable

...

JI'

...

JI'

...

...,.

...

...,.

A7PU

programming

unit

A6WU

P-ROM

writer

unit

A6HGPE

handy

graphic

erccrernmer

t

SW3-HGPAEE

system

disk

A6PHPE

plasma handy

programmer

SW4GP-

•

GPPAEE

system

disk

.1

......

.2

.3

~

....

.-

...

•

....

cassette(J-1)

..

Cable

for

audio

AC03WU

cable

for

A6WU

AC30R2

RS-232C

cable

SWO·GPPU

user

disk

--~

-~

Audio

cassette

recorder

A6WU

P-ROM

unit

Printers :

KSPR,

K6PR-K,

K7PR, A7PR, GT-10,

generaJ-

purpose

printer

.5

writer

t

...

•

IREMARKSI

(1) See (2) See (3) A

A6GPPE

intelligent

GPP

App.4for Section

maximum

i+

~

"'l[

restrictions

5.3

for

of 7 AJ35PTF-R2 RS-232C

for

use of

specificationsofs-core

I

cleaning

'*

1to.5.

interface

SWO-FDC

AC10MD

composite

video

cable

EP-ROM

flat

cables

modules

disk

cables

CRT

*.

-~IL..--_

and

twisted-pair

can be

connected.

2-2

2. SYSTEM CONFIGURATION

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

2.2

Notes

on

System

MELSEC-A

Construction

(1) Connection of remote I/O modules and remote terminal modules

A maximum of 64 stations of remote I/O modules and remote terminal modules can be connected to the A2C.

Also,

the

MINI-S3Iink disclosedevices can be connected. (See Section

2.3.)

(2) Applicable remote terminal modules

A maximum of 14 remote terminal modules among those mentioned

below can be connected RS-232C interface module is used, up to 7 modules can be connected.

(a) A68ADC A/D conversion module (b) A64DAVC D/A conversion module • (c) A64DAIC D/A conversion module (d) AD61C high speed

to

the

counter

A2C. However, when

module

the

AJ35PTF-R2

I

(e) AJ35PTF-R2 RS-232C interface module (no-protocol mode only)

(3) Use of the MINI-S3 link modules

The following restrictions are applied when the MINI-S3 link remote I/O

modules (a) Twisted-pair data link

(b) Optical/twisted-pair data link

(c) Optical

and

remote terminal modules are used.

module:

No restriction is applied.

module:

When twisted-pair shield cables are used, no restriction is ap-

plied. •

When an optical data link module is used, use switch the twisted-pair shield cable data link with cable

Usable when the

data

link.

data

link

module:

the

optical/twisted-pair data link module is used as

optical data link module.

this

the

..

module to fiber-optic

2-3

2. SYSTEM CONFIGURATION

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

I

Twisted-pair shield cable

-.

(8)

\

Optical fiber cable

Fig.

2.2

(4) Power

modules

supply

A2CCPU

(C)

(8)

/

Connectionofthe

for

the

A2CI/0

Twisted-pair shield cable

/

(A)

Twisted-pair

.>:

(A) : Twisted-pair data link (8) : Optical/twisted-pair

(C) : Optical data link module

MELSECNET/MINI-S3

module and

shield

the

A2C special function

MELSEC-A

cable

module

data

link

module

Modules

The

A2CI/0

VDC power supply. Use

purpose

(5) Both remote I/O modules and remote terminal modules, when used with

the

A2C, need station

If

two

or more different modules are set incorrect modules which are set for one same station

turned

See Section 4.7 for details of station setting.

modules and

24 VDC power supply.

input

and

ON.

the

number

output

A2C special function modules require 24

A66PC

will occur. Make sure

power

setting.

supply

for

module

one same station number,

number

or a general-

that

there

when

the

are no

power

is

2-4

2. SYSTEM CONFIGURATION

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

(6) To eliminate incorrect

system considering the following. (a) Measures on turning ON and OFF

1) When turning ON the power,

first, and then, turn ON

remote I/O modules

2) When turn OFF the same time.

IREMARKSI

Power supply for the remote I/O modules indicates the following.

(1)

I/O

module power

5 VDC inside the system and used in the internal circuit of the (2) Input external power (3) Output external power

See the following manual for details.

A2CI/0

Module User's Manual

turning

the

supply:

inputatthe

together

OFF

the

remote I/O modules. Or,

Power supplied to the

Power supply for input modules

supply:

Power supply for output modules

remote I/O modules, design

the

A2C. Or, turn ON

power, turn OFF the A2C first, and then,

the

power

turn

ON

at the same time.

turn

I/O

module power supply Is converted to

MELSEC-A

the

remote I/O modules

the

A2C and the

them OFF

I/O

module.

together

the

A2C

I

at

(b) Measures against momentary power failure

Momentary power failure of the cause incorrect input.

1) Cause

The I/O module hardware converts the I/O module (24 VDC) to 5 VDC inside the module.

If momentary power failure input below OFF to turning OFF of internal 5VDC)

time of

Externalsupply 24 VDC (for I/O module power supply

and

input

Inside5VDC

Input (Xn)

for

occurs

because:

input

external

incorrect input due to momentary powerfailure

if I/O refresh is executed within duration (A) shown

(Time from occurrence of external

module).

power

supply)

power

occursinthe

ON

supply of

-

Whenthe input input(Xn)turnsoffafterthe ON-OFF responsetime

ofthe

input

external

module.

for

the

I/O module

the

I/O module may

power

I/O module, incorrect

power

supply

> (ON to OFF response

(A)

-

powersupplyisturnedoff,

OFF

•

2-5

2. SYSTEM CONFIGURATION

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

I

When

DC is

used

2) Prevention of incorrect Connect

the

to one same power supply.

L-

input

A2C, A66PC, stabilized

A2CCPU

",J

/TWisted.pai'

, / I/O

Stabilized

power supply

A66PC

A2CCPU

24 VDC

power

L-

__

MELSEC-A

supply

cable

I/O module power supply

-----'I

and

module

I Input external

AC

input

power supply

When input

used

AC

is

Stabilized

'-----

Fig.

power supply

2.3

A66PC

Power

Supply

24 VOC

Wiring

VOmodule power supply

------'1

Example

I

Input external power supply

2-6

2. SYSTEM CONFIGURATION

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

MELSEC-A

(7) If two or more I/O modules are connected to one power supply, choose

drop

cables and wiring route considering voltage

the

The figure below explains

0---)

Stabilized

power supply

voltage

/

11

I

+ 12

\

Rl

drop

1/

caused by cables.

\

/

1/

caused by cables.

V2

R2

I

12

I

-,

,

I I

I,

I/O module 1

V1

Voltage drop between stabilized power supply and I/O module 1

V2 VoRage drop between I/O module 1 and I/O module 2

R1

Resistancebetween stabilized power supply and

R2 Resistance between

h Current consumption of I/O module 1

12

Current consumption of I/O module 2

I/O

module 1 and I/O module 2

110

12

I/O module

module 1

2

I

!Voltage

VI = Rl x

V2 = R2X

I

Receiving

(Receiving port voltage of I/O module 1)

(Receiving port voltage of I/O module 2)

drop

calculation

(11+12)

12

port

voltage

= (Voltage of stabilized power supply) - VI

of

I

I/O

module

I

=(Voltage of stabilized power supply) - VI - V2

An I/O module can be connected if the receiving portvoltage of I/O module

the

is higher than

rated voltage of the I/O moduletobe used.

•

2-7

2. SYSTEM CONFIGURATION

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

System

2.3

2.3.1

Modules whIch can be connected to

Table

Module Type

CPU

module

Equipment

2.1

Remote

P2.C

CPU

Program steps

1/0

T : 256 points, C : 256 points, D:

User (Program

Comment

bytes)

MELSEC·A

In this section,

with

the

A2C are listed.

The remote I/O modules and remote terminal modules which can be connectedtothe

I/O

Modules

Description

capacity:

points:

1024 points, M,L,S : 2048

512

memory

area:8Ksteps

and

area:

file

the

I/O modules and peripheral devices which can be used

the

A2CCPU

A2CCPU are listed in Table 2.1.

and

Maximum

points

32K

registers:

Remote

8K

points

bytes

12K

Terminal

OCCupied

S1atlons Point. sumptlon

- -

Modules

OCCupied

Operable

Power

Con-

fYA)

110

Current

Con·

sumption

24VDC

(A)

-

with

Appllcol-

0

the

lion

A2C

Remar""

Built-In

power

supply

EP-ROM

I/O

module

power

=

VO

module

supply

Input module

4K

For 2K

ROM

8K

For 6K

ROM 16K

For 8K

ROM

A66

PC

PJ(

11C

PJ(

41C

PJ(

81C

Input

Output

AC

Input

100-120 VAC, 32 points

DC

input

12/24 VDC, 32

DC

input

(source/sink

12/24 VDC, 32

IREMARKsl

(1)

steps

:

100/200VAC

: 24 VDC, 0.6 A

module

Symbols

(sink

points

loading)

points

0,~and

o Applicable.

A

Applicable

I

loading)

I

x in

with

I

the

"Application"

restrictions.

- - -

-

4

eta-

tions

-

32 0.056

points

column

(See

indicate

Section

- •

110

-

0.056

-

0.100

applicabilityofmoduleasfollows.

2.2.)

0

x

Not

(2) * :EP-ROM is

be

used.

applicable.

used

for

EEP-ROM

running

cannotbeused

thePCusingaprogram

2-8

for

the A2C.

stored

in ROM;

one

EP-ROM

can

2. SYSTEM CONFIGURATION

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

Table

A2C

VO

module

A2C

VO

module module

2.1 Remote I/O (Continued)

Module

Output module

VOoom-

posile

Type Descrlp1lon

AY (sink loading) 51C

AY

23C

AY 13C

AY 81C

fIJ(

lOY lOC

fIJ(

40X 0.116 lOC

fIJ(

40Y

SOC

fIJ(

lOY

22C

Modules

Transistor

12/24 VDC, 0.3 A, 32

Triac

100-240 VAC, 0.3 A, 32 Relay 24 VDC, 0.5A 110 VAC, 0.5A,

32

Transistor

(source type) 24 VDC, 0.5A 32 points

AC input,

Input

Output : 24 VDC, 0.5 A, 110 VAC,

DC sink input, relay

Input : 2/24 VDC (sink loading)

Output : 4 VDC, 0.5 A, 100 VAC,

DC sink input, transistor

output

Input

Output

AC input, triac output

Input

Output : 100-240 VAC, 0.3 A,

sink

output

points

output

relay

: 100-120 V, 16 points

0.5

16

0.5

module

: 12/24 VDC (sink loading)

16

: 12/24 VDC (sink loading)

0.3A.16

100-120 VAC, 16 points

:

16

and Remote TermInal

output

module

points

module

output

A, 16 points

points

A, 16 points

points

module

output

points

module

I

points

I

module

sink

OCCupied

Stations

4 sta-

tions

4 sta- 32

tions

Modules

OCCupied

Point. sumptlon

32

points

Power

Con-

(VA)

-

Operable

Current

Con-

8umptlon

24VDC

(A)

0.09

0.18

0.093

0.055

0.074

0.072

0.074

MELSEC-A

with

the

Appllca-

tlon

0

A2C

Remerks

I

•

.emN

DIN Used to

adapter

lC A6DIN

(optional)

2C

IREMARKSI

(1)

(2) * : EP-ROM is

mount

to DIN rail

Symbols0,Ii.

o

Applicable.

Ii.

Applicable

x

Not

applicable.

used.

be

and

x in

with

used

for

EEP-ROM

-

the

"Application"

restrictions.

running cannotbeused

thePCusingaprogram

2-9

- -

column

(See

for

Section

the

A2C.

indicate

2.2.)

0

For

A2C1/0

-

0

applicabilityofmoduleasfollows.

stored

in ROM;

one

For

A2CCPU

EP-ROM can

2. SYSTEM CONFIGURATION

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

Table

MINIS3

remote

I/O

module

Module

Oul-of-

panel

typa

2.1

Remote (Continued)

MINI-53

Twl

Opll-

CIII

0

ted-

pair

I/O

Unk

..

Modules

Optl-

cal/

twl

..

ted-

pair

and

Remote

Input

VDC, 0.1

VDC, 0.5

points

Description

module

output

(sink

output

(sink loading)

Type

AC

A.l35P

J.8A

100-120 VAC, 8 DC input module (sink loading)

AJ35P

J-8D

12/24 VDC, 8

Contact output module I

AJ35P

24 VDC, 2 A, 240 VAC, 2 A,

J-8R

8 points

Transistor

module

AJ35P

J-8T1

12/24

S points

Transistor

module

AJ35P

J-8T2

12/24

8

Terminal

points

loading)

A/point,

Modules

oe-

cupIed cupIed

StatIons PoInts tlon

I

1 sta-

tion points

Operable

oe-

8

with

Power

Con-

sump- sump-

(VA) 24VDC

-

Cur·

rent

Con-

tlon

(A)

0.04

0.13

0.08

0.03

MELSEC-A

the

A2C

Ap-

pll

..

lion

-

I'J.

Transistor

module (sink loading)

AJ35P

J-8T3

12/24

8

points

Triac

AJ35P

100/240

J-8S1

8

points

Triac

AJ35P

100/240

J-8S2

S

points

IREMARKSI

Symbols0,A and x in

o Applicable.

A

Applicable

x Not

applicable.

VDC, 2

output

VAC,

output

VAC, 2

the

with

output

A/point,

module

0.6

Alpoint,

module

A/point,

"Application"

restrictions.

I

column

(See

indicate

Section

0.065

0.08

applicabilityofmodule

2.2.)

as follows.

2-10

2. SYSTEM CONFIGURATION

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

Table

MIN~

S3

remote

VO

module

2.1 Remote

Module

Out-of-

panel

type

(Continued)

MINI-S3Unk

Twls-

Optl-

ted-

cal

pair

0

I/O

Opll-

cal/

twIs-

tedpair

Modules

Type

AC

AJ35T

J-8A

100-120 VAC,a

DC

AJ35T

(sink loading)

J-8D

12/24

Contact output module

AJ35T

24 VDC, 2 A,

J-8R

S

Transistor

(sink loading)

AJ35T

J-8T1

12/24

a

Transistor

(sink loading)

AJ35T

J-8T2

12/24 VDC, 0.5 AJpoint,

8

and

Remote

DescrIption

input

module

input

module

VDC, a

points

240

output

VDC, 0.1 A/point,

output

Terminal

Modules

oe- oe-

...-

SlatIons PoInta

T

points

T

VAC,2 A,

module

module I tion points

I

1 sta-

Operable

...-

a

MELSEC·A

with

the

Current

Power

Con- Ap-

sump-

-

tlon

(VA)

Con-

sump-

lion

24VDC

(A)

0.05

0.13

0.09

0.03

plica-

Ii.

tlon

A2C

Rerrwt<s

I

Transistor output module

AJ35T

J-8T3

12/24

Triac

AJ35T

J-8S1

100/240

8

Triac

AJ35T

100/240 VAC,2 AJpoint,

J-8S2

8

IREMARKSI

Symbols0,A

o Applicable.

Ii.

Applicable

x Not applicable.

(sink

loading)

VDC, 2 AJpoint, 8

output

VAC,

points

output

points

and

x in

I

points

module

0.6

AJpoint,

module

the

"Application" column Indicate

with restrictions.

1 1

(See

Section

0.065

0.09

applicabilityofmodule

2.2.)

•

as follows.

2-11

2. SYSTEM CONFIGURATION

____________________

MELSEC-A

Table

Module

MINI-

S3

remote

VO

modul

Com-

pact

type

2.1

MINI-S3

Optl-

cal

Remote

I/O

(Continued)

Link

OpU-

wls-

call

twls-

ted-

pair

0

Modules

Type

AJ35

PTF-

32A

AJ35

PTF-

32D

AJ35

PTF-

24R

AJ35

PTF-

248

AJ35

PTF-

24T

AJ35

PTF-

28AR

AJ35

PTF-

28AS

AJ35

PTF-

28DR

AJ35

PTF-

2805

and

Remote

Description

AC input

100-120 VAC, 32 DC

12/24

Contact

24VDC,2

Triac

100/240 VAC,

24

Transistor

module

12/24 VDC, 0.5

AC

module

Input

Output:

AC input, triac

Input

Output:

DC input,

output

Input

Output:

DC Input

Output:

module

input

module

VDC, 32

output

A,240 VAC,2 A,24 points

output

module

points

output

(sink

loading)

input

contact

:

100-120

24 VDC, 2 A, 2 A, 12

: 100-120 VAC, 16

100-240 VAC, 0.6 AI

point,12points

contact

module

: Sink

loading,

12/24

24 VDC, 2 A, 2 A, 12

input,

triac

:

Sink

loading,

12/24 VDC, 16 100-240 VAC, 0.6 AI

point,12points

points (sink

points

module

0.6

Npoint,

output

V, 16

points

output

VDC, 16

points

output

Terminal

I

loading)

I

24 points

I

points

240

VAC,

module

points

I

points

240

VAC,

module

points

Modules

oe-

cupied

Stations

4stB- 32

tions points

oe-

cupled

Points

Operable

Current

Power

Con-

sump-

tlon

(VA)

Con-

sump-

24VDC

0.11

0.12

0.20

0.13

0.12

-

0.14

0.12

0.15

lion

(A)

with

Ap-

pllca-

tlon

0

the

Remarks

A2C

DC

output

AJ35

PTF-

28DT

Input:12/24 Output:

IREMARKSI

Symbols

0,

6.

o Applicable.

/!

Applicable

x Not

input,

module

(sink

12/24 VDC

(sink

0.5

and

x in

applicable.

transistor

VDC

loading)16points

loading)

Npoint,12points

the

"Application"

with

restrictions.

2-12

I

column

(See

indicate

Section

0.11

applicabilityofmoduleasfollows.

2.2.)

2. SYSTEM CONFIGURATION

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

.

Table

'-IN-

53

"'""*'

va

module

Module

Compoet

type

2.1

MINI-S3 Link

Optl.

cII

Remote (Continued)

iTwl

ted-

pol,

l•

I/O

Opll-

CIl/

\wll-

ted-

pol'

0

Modules

Type

AJ35

PTF-

56AR

AJ35

PTF-

56AS

AJ35

PTF-

56DR

AJ35

PTF·

5608

and

Remote

Delc,lptlon

AC

Input

output Input

Output:

AC Input,

Input : 100-120 VAC,32 Output:

DC input,

output

Input

Output:

DC input, triac output

Input Output:

contact

module

: 100-120 V,32points

24 VDC, 2 A, 2 A, 24 points

triac

100-240 VAC, 0.6 AI

point,

contact

module

: Sink

loading, 12/24 24 VDC, 2 A, 2 A, 24

: Sink

loading, 12/24 100-240 VAC,

point,

output

24

points

VDC, 32

point.

VDC, 32

24

points

240

module

240

module

0.6

Terminal

I

VAC,

point.

I

points

VAC,

points

AI

Modules

Oc- Oc-

copied copied

Statlono

8s1a-

lion.

PoInto

64

points

Operable

CUrrent

Power

Con-

lump-

tlon

(VA)

con-

lUmp-

24VDC

0.15

0.23

0.15

-

0.23

MELSEC·A

with

Ap·

pllce.

lion

(AI

0

the

Remorb

A2C

I

AJ35

PTF-

56DT

0lIa r!< AI12

mcdJo

PT35 left.

IREMARKSI

Symbols0,11

x Not applicable.

DC input, transistor

output

module

Input

:

Output:

Used when the

type

I/O module is used as the

remote I/O module.

• Max. of I/O

• Max. I/O

• Occup.ied

16

(selecteble)

and x in the

o Applicable.

Ii.

Applicable

I

12/24

VDC

(sink loading) 32

12/24

VDC

(sink loading)

0.5 Alpoint, 24 points

building

modules:

points:

stations:

"Application"

with restrictions. (See Section 2.2.)

128

points

block

8

4, 8, 12,

column indicate

see

left.

applicability

0.16

-

of module as follows.

•

2-13

2. SYSTEM CONFIGURATION

I

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

Table

Remote

terinal

module

'2

Inter-

face

module

2.1 Remote I/O (Continued)

MINI-53

Module

Optl-

cal

NO

module V)12·bitdigital output

"""""'"'"

DlA

converter 4sla- 32

module

High

speed

counter

module

RSZl2C

interface

module

(opticaV

twisted·

pairdala link)

Forcon-

rec&1g

foIEI.SEC.

series

F

Pes

For

necting

FR-Z2lO

general-

purpose to

inverters

0

ron-

0

"'wlo-

ted-

pal,

0

Link

Optl-

cal/

twls-

ted-

pal'

0

Modules

Type

MIl

ADC

A64

DAVC

A64

DAIC

AD61C

A.l35P

TF-R2

F-16

NP

F-16

NT

FRZDL

MELSEC-A

and

Remote

Description

8 channels, 12-bit

input

(4 to 20 m

4 channels, Con-

12-bit digital input

Analog

output

4

channels,

12-bit

digital

Analog

2 channels, binary 24 bits,

1/2 reversible

kpps

Connecting external

of RS-232C interface specifications

Used

the A2C.

Used Mitsubishi general-purpose

output

phase

module

MELSEC-F

the

for

devices

for

A2C.

input, counter,

connecting

series

connecting

FR-Z200

Terminal

analog

NO

to

±10

0 to

±10

V 1he

input

4 - 20 rnA ...d

50

NoplctoooI

Bar 4sla-

code tions

Modules

00-

cupled cupled

Stations

tions points

00-

Points

32

poirrts

Operable

Cunenl

Power

Con-

Bump-

tlon

(VA)

Cor>-

oump-

lion

24VDC

0.3

0.23

-

0.34

0.15

-

0.20

with

Ap-

plica-

tlon

(A)

0

x

read...

1Jpil*>

pes

to

the

series

inverters

2sla-

tions

4sla- 32

tions points

16

points

-

*1

x

l!.

0

l!.

the

Remarka

Iormsto

MiIsu-

bishi

Stand-

Protocol.

A2C

IREMARKSI

(1)

Symbols0,A follows. o

Applicable.

A :

Applicable Not

x :

(2)*1

:For

current

(3)*2:Amaximum

A

maximum

and

with

applicable.

consumption,

of 14

remote

of 7 RS-232C

x in

the

restrictions.

see

terminal

interface

2-14

"Application"

(See

Section

the

manualsofinterface

modules

column

can be used.

2.2.)

can be

indicate

used.

applicabilityofmodule

modules.

as

2. SYSTEM CONFIGURATION

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

2.3.2

Peripheral devices

Unit

Programming

unit

with

CRT

Description

Intelligent

GPP

Composite

video

cable

Table

Type

A6GPPESET

*1

AC10MD

2.2

LIstofPerIpheral

•

Consistsofthe

Type

A6GPPE

SW[

jGP-GPPAEE A

SW[

jGP·GPPKEE

SWO-GPPU User

AC30R4

Cable

for

It

length.

• Consists of

connection

the

Devices

following

• Programming

•

Equipped

interface series

K series system

Cable

3

m/9.84

of GPP and

following

Remarks

models:

unit

with

ROM writer, FOD

functions.

system

disk

for

models:

disk disk

(3.5 inch, formatted)

connection

It

length

expanded

MELSEC-A

Remark

•

with CRT

and

of CPU and A6GPPE

monitor

display.

printer

1

m/3.28

I

•

Programming

unit

with

LCD

Programming unit

with

plasma

display

Hendy graphic programmer

Plasma

hendy

programmer

A6HGPE· SET

*2

A6PHPE-

SET *3

Type

•

Programming

A6HGPE

SW[

IGP-HGPAEE A

SW[

jGP-HGPKEE

SWO-GPPU User

AC30R4

• Consists of

A6PHPE

SW[

IGP-HGPAEE A series system

SW[

IGP-HGPKEE K series system

SWO-GPPU User

AC30R4

the

Type

•

Equipped

memory card interface functions.

series

K

series

Cable

3

m/9.84

following

•

Programming

•

Equipped memory

Cable

3

m/9.84

unit

with

FDD,

system

disk

system

disk

(3.5 inch, formatted)

for

connection

It

length

models:

unit

with

FOD,

card

interface

disk disk

disk

(3.5 inch, formatted)

for

connection

It

length

Remarks

with

LCD

printer

Interface

of CPU

Remarks

with

of CPU and A6PHPE

plasma

printer

functions.

and

A6HGPE

display

interface

and

•

and

2-15

2. SYSTEM CONFIGURATION

I

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

Unit

Common

programming

unit

and LCO

Programming unit

P-ROM

unit

to

with CRT

writer

Description

RS-422

cable

User

Cleaning

disk

Programming

unit

RS-422 cable

P-ROM

writer unit

RS-422

cable

disk

Table

2.2

LIstofPeripheral

Type

AC30R4

AC300R4

SWO-GPPU

SWO-FOC

A7PU

AC30R4 3

AC300R4

A6WU

AC30R4

AC300R4 30

Cable

for

A6GPP/A6HGP/A6PHP

User

disk

Cleaning

• -Connected to the CPU

*4

.5

programs.

•

The

A7PU is

audio

cassette

Cable

for

•

Usedtostore

the CPU.

•

Connection

Cable

for

Devices

connection

(3.5

inch,1ormatted)

disk

for

disk

Equipped

supplied

recorder.

connection

programs

by RS·422

connection

(Continued)

Remarks

of CPU

of CPU and A6WU.

and

for

storing

drive

directlyofvia

withMTfunction.

with a cable

and

A7PU.

onto

ROM

cable

for

and

programs

cable

to read and

connection

read

programs

MELSEC·A

3

m/9.84

It

30

m/98.4

fllength

write

of the A7PU and

m/9.84

It

30 m/98.4 It

from

3

m/9.84

It

m/98.4

It

length

ROM

length

to

POINTI

(1)

.1:

Use

the

SW4GP-GPPA system

disk

upgraded

for

the

If SW[ IGPPA or SW3GP-GPPA is used, operate following

The system disk is not used, operate

the

cautions given in App. 4.

upgraded

the

A6HGP following

for

the

A2C. If SW[ IHGPAis

the

cautions

given in App.

4.

Use

the

SW4GP-GPPA system

If SW3-GPPA is used, operate

disk

upgraded

the

A6PHP following

for

the

given in App. 4. The A7PU is not

the

A7PU following

the

Use

A6WU

upgraded are applicable to A6WU of versions

upgraded

the

"0"

for

the

A2C. If A7PU is used, operate

cautions given in App. 4.

for

the

A2C. (Versions "E" and later

A2C.) Those EP-ROMs written by

and older

cannot

be installed to

(Only one ROM can be installed in A2C. However, regards tempted,

the

A2C as "A2', and if writing to

the

ROM is divided to

the

"even' and

the

EP-ROM is at-

"odd"

address areas.)

A2C.

the

A6GPP

A2C.

the

cautions

the

A6WU

numbered

the

A2C.

2-16

3. GENERAL SPECIFICATIONS

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

3. GENERAL SPECIFICATIONS

Table 3.1 shows

Table

Item

Operating

ambient o

temperature

Storage ambient

temperature

Operating

ambient

Storage ambient humidity

Vibration

resistance

Shock

Noise

Dielectric

withstand

voltage

humidity

resistance

durability By

to

55°C

-20to75°C

10 to 90% RH,

10

to 90% RH, non-condensing

Conforms to

*JIS

C 0911

ConformstoJIS C

noise

1500

VAC

500 VAC

non-condensing

9012

simulator of

for1minute

Frequency Acceleration

10 10

5510150

1500

across

the

common specification of various modules used.

3.1 General

55Hz

Hz

(10 9 x 3

times

Vpp

noise

AC externals

DC external

SpecificatIons

Specification

-

1 9

in 3

directions)

voltage,1ps

and

ground

terminals

noise

and

AmplRude

0.075

mm

(0.003 in) 10 times

-

width

and

25 to 60 Hz noise

ground

MELSEC-A

Sweep Count

*(1 octave/minute)

frequency

I

•

Insulation

resistance Grounding Operating

ambient Cooling

method

5Meof AC

Class3grounding:

Free of

Self-cooling

larger

external

corrosive

by 400 VOC

terminals

IREMARKSI

(1)

One

octave frequency. 40 Hzto20 Hz,

(2)

Sinceavaristorisprovided

between

(3)

Disconnect A66PC.00not since

they

Note:

insulation

and

ground

groundingisnot

gases.

Oust

marked*indicatesachange

For

example,

and

AC and LG.

grounding

connect

are

shortedinthe

resistance

required

shouldbeminimal.

any of

20 Hz to

between

of FG

andLGbefore

leadstoFG and LG

when

the

changes

10Hz

are referred to as

AC and LG, do

module.

tester

across

it is

impossible

from from

applying

when

10Hz

applying

*JIS : Japanese Industria/ Standard

the

initial

frequencytodoubleorhalf

to 20 Hz,

one

not

applyavoltageof400Vor

the

maximum

octave.

the

maximum

from

allowable

20 Hzto40 Hz,

voltagetothe

allowable

voltage

from

higher

•

3-1

4.A2CCPU

4. A2CCPU

Performance

4.1

MELSEC-A

I

(1) Performance specifications

Item

Control system I/O control method

Programming language

Sequence instruction

Number of

instructions

Processing speed (sequence instruction) (p sec/step)

110

points Watch dog timer Memory capacity

Program capacity

Internal Latch

Number of step relays (8) (point)

Link

relay

relay (L)

relay

(WOn

(B)

Basic instruction

Application

instruction

(msec)

.1

(M) (point)

(point)

Number of points

Table 4.1

Repeated operation (using stored program)

Refresh mode

Language dedicated to sequence control (Combined use of relay symbol

type and logic symbolic language)

22

131

97

1.25

512 10 to

32 K byte built-in RAM for user

Max. 16K (8K step) 1000 (MOto 999) 1048

ListofPerformance

2000

(L1000 to 2047)

Performance

The number of Ms + Ls + 55 =

(set in parameters)

2048

o (Defaults to no value)

1024 (BOto 3FF)

256

Device

Timer

en

Specifications

Counter

Data register (D) (points) 1024 (DO to 1023)

Link

Annunciator (F) (points) Index register (V, Z) (points)

Nesting

(C)

register

(N)

Numberofpoints

Specifications

0"1)

(points) 1024 0"10to 3FF)

(points)

*1 •

Total memory capacity for parameters, TIC set values, program capacity, file registers,

comment points, sampling trace and status latch. See Section 4.4 for memory capacity calculation.

100 msec

10 msec 100 msec retentive

(setting time 0.1 to 3276.7sec)

256 Selling

256 (FOto255) Max. 4096 (AO to 4095) 8 (NOto 7)

timer:

range

1 to 32767 (COto 255)

4-1

selling

time

0.1 to 3276.7sec

setting time 0.01 to 327.67sec (T200 to 255) parameters

timer:

depending on setting

(TO

to 199)

]-

Set

in

4.A2CCPU

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

Table

Item

Pointer (P) (points)

Device

Special Special

Comment (points)

Self·diagnostlc functions

Operation mode at the time of error STOP/CONTINUE

STOP

~ RUN

A2C

internal

supply

Weight

kg (Ib)

relay (M) (points) register (D) (points)

.2

output

mode

Input power

Input frequency 50/60 Hz ± 3 Hz

Maximum

power

input apparent 110 VA or less

power

Input current 20 AP/20 AP or less Efficiency

Allowable

momentary

power failure

4.1

ListofPerformance

256 (POto 255) 256 (M9000 to 9255) 256 (09000to 9255)

Max.

1600

(Specify in batches of 64 points)

Watch dog error monitor (watch dog timer 200 msec), Memory error detection, CPU error detection,

etc.

Output

dataattimeofSTOP

100to

120 VAC/200 to 240 VAC

(85 to 132 VAC/170 to 264 VAC)

65% or over

20 msee or

A2CCPU : 1.1 (2.41) A2CCPUP21 A2CCPUR21 : 1.5 (3.28)

less

1.5 (3.28)

:

MELSEC·A

(Continued)

Performance

I/O

error detection, battery error detection,

restored/data output after operation execution

:;:1~~

I

.2.

With GPP/PHP/HGP, comments up to 4032 points can be used. Note that the maximum

of storage capacity of the A2C is 1600 points.

•

4-2

4.A2CCPU MELSEC-A

(2) Data link module performance specifications

I

Table

Maximum

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

Max. usable link

points per station

Max.

link

1

system

Max. Allowable Communication Communication Synchronous

Transmission path

Overall loop

Numberofconnected Demodulation Transmission Error

RAS

Connector

Cable

numberofI/O

number

points

of

number

numberoflink

of

in

momentary

method

distance

method

format

control

function

system

used

Input Output Link

Link

points

power

speed method

method

*1

stations

points

(X)

(y)

reley register

in 1

failure

4.2

(B)

station

rt'/)

Data

time

Link

Module

512 512

points

512

points

1024

(1/8

1024(2bytes/points, Y + B + W s Within

20 msee

1.25

MBPS

Half

duplex

Frame

synchronous

Duplex

Max. 10 km (32810 It) Max. 10 km (32810 It) (1 km (3281 It)

Max. 65 CMI

method

ConformstoHOLe

Optical

A2CCPUP2t

(64 (64

byte/point,

1024

bit

loop

method

units/loop

Performance

Data

bytes) bytes)

serial method

station

(1 master station, 64 local/remote I/O stations)

Retrydue to CRC (generating polynomial X

Loopback

diagnostic 2-core

(CA9003) 81-200/250 3C-2V, 5C-2V

function

optical

duetoerror

connector

Link

128

bytes)

2048

bytes)

bytes

method

interval)

(frame

method)

suchashost

plug

Specifications

Coaxial

A2CCPUR2t

(500 m (1640.5 It)

16

+X12+

detection

link

line

BNC-P-5, BNC-P-3-NI (DDK)

equivalent

and

x.s

cable

Data

Link

station

intervaQ

+ 1) and time over

breakage,

equivalent

IREMARKSI

The

overall

the

receiving

10 km (32,810 tt) in

loop

distanceisthe

port

of the

Overall

both

loop

master

optical

distance

4-3

distance

station

via

and coaxial

from

slave

the

cable

sending

stations.

loop.

portofthe

The

maximum

master

loop

station

distance

to

is

4.A2CCPU

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

4.1.1 Repeated operation processing

Sequence programs are written by the peripheral device and stored to the

A2C user program area (maximum 8K steps). The A2C reads

area and performs

the [END)(FEND) instruction.

(1) Stored program system

Sequentially reads and operates the program stored in gram area.

(2) Scanning

Operates

[END)(FEND). •

Step number Sequence program

Flg.4.1

the

required program sequentially from the

the

repeated operation processing in

the

program in

0

1

2

3

+

Sequence

LD

OR

ANI

OUT

orderofstep

XOOO YOlO XOO1 YOlO

to

END

Program

Operation

numbers from

n

,

J

Processing

MELSEC-A

user

program

orderofstep

the

user pro-

step

0 to the

I

0 to

I

4.1.2

Initial processing

Initial processing initiates

following initial processing is executed when

by

the

RUN key switch.

Initial processing time is 2 to 3 seconds

figuration

(1) I/O modules initialization

Resets and initializes

(2) Data memory clear

Clears the

(3) Link parameter setting

In

the

a data link module before starting data link.

data

case of a MELSECNET link station, link parameter data is set to

the

sequence program operation processing. The

though

the

I/O modules.

memory which is not latched by

the

A2C is turned ON or reset

it varies with system con-

the

peripheral.

411

4-4

4. A2CCPU

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

MELSEC-A

(4) Self-diagnosis

I

4.1.3

END processing

The PC CPU further

END processing returns the A2C to step 0 after execution to allow repeated operation processing.

(1) CPU error check

Checks battery power, etc.. See Section 4.3.1 for details.

(2) Timer/counter processing

Updates timer/counter present values and details, see Section 4.1.4 and 4.1.5.

(3) Sampling trace processing

Stores

sampling trace is executed every scan (after END execution)

conducts

details, see Section 4.3.1.

the

specified device status to

self-checks when it is powered up or reset. For

the

END (FEND) instruction

contact

sampling

status. For further

trace

area when

the

(4) Operation state check

Checks operation state of the A2C and switches to PAUSE state. For transition processing to states, see Section 4.1.9.

(5) Constant scan processing

the

Allows

specified constant scan time (set to special

reached.

(6) Link refresh processing

After receiving a link refresh request signal from

link, link refresh processing is executed.

The A2CCPUP21/R21 can set link refresh enable/disable by M9053 and

DI/EI instructions.

repeated

operation

processing

the

to be

the

RUN, STOP or

RUN, STOP and PAUSE

initiated

data

register D9020) is

the

MELSECNET

after

the

data

4-5

4.A2CCPU

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

4.1.4

Timer processing and accuracy

MELSEC·A

The A2C uses up-timing timers which increase present value as measuring time increases. Three kinds of timers are provided; 100 msec timer, 10 msec timer and 100 msec retentive timer.

• 100 msec timers ... setting

0.1 to 3276.7

• 10 msec timers ... setting

0.01 to 327.67

• 100 msec retentive timers ... setting

0.1 to 3276.7

Processing when the coil is turned off differs from msec timers.

The following paragraphs explain timer processing.

(1) Timer present value and contact status update

With continuity in front of a timer coil, the timer present value

contact status are updated after instruction and

sec

in 100 msec increments

sec

in 10 msec increments

sec

in 100 msec increments

the

range:

the

execution of

timer contacts close after

the

timer has

processing of 100

the

END (of FEND)

timed

out.

and

I

(a) 100 msec

When present value is reset to 0 and

(b) 100 msec retentive timer

When the continuity is removed from in front of the

present value update is stopped

(2) RST

T[

) instruction executed

When

reset to 0 and

present value

instruction.

the

and

the

continuity is removed from in front of the

timer is reset by the RSTT[) instruction,

the

and

10 msec timers

timer

coil,

the

timer contacts open.

timer

coil, the

but

the present value is retained.

the

present value is •

timer contacts open. The retentive timers retain their

contact status, and are reset using

the

RSTT[)

4-6

4.A2CCPU

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

MELSEC-A

(3) OUT T[ I jumped

If

the

OUT T[ I instruction is jumped after the timer has started timing,

it continues to time. The contacts are closedwhen

o

I

f-------y

I

END 0

I I

IVvA(V''vI--1-----f/V'/V'.,N--

ITimer

present value updated I

the

timer times out.

END 0

I

AAAA

I v v '1

L

ITimer contact status updated

FIg. 4.2

JREMARKsl

Accuracy of timers when external inputs are used is within 0 to+2from the scan time. For timer timing and accuracy, read the ACPU Programming Manual (Fundamentals).

Timer

Processing

4-7

4.A2CCPU

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

4.1.5 Counter processing and maximum counting speed

The A2C uses up-timing counterswhich increase leading edge of an

Counters are used by incorporating in routine programs.

(1) Counter present value and contact status update

Counter coil Is switched on and off by counter

after

the

close after

presentvalue and contact status even ifthe countercoil is switched off.

(2) RST C[

I instruction executed

When the counter is reset by the RST C[

is reset to 0 and the counter contacts open.

input

signal.

present value is

updatedonthe

END (FEND) instruction is executed. The counter contacts

the

counter has counted out. The counters retain their

... MELSEC·A

their

presentvalues on

the

main routine programs or

the

OUT C[ I instruction. The

leading

I instruction, the present value

edgeofthe

the

sub

coil signal

I

o

END

Counter present value updated

Counter contact status updated

Fig. 4.3

o

Counter

Processing

END

o

IREMARKSI

The maximum counting speed of the counter depends on the scan time. Counting Is only

possible if the input condition is on for more than one scan time. For further details, see the ACPU Programming Manual.

Maximum counting speed Cmax

where. n =

duty

(%)

Duty is the ratio of the input signal's on time to off

Count input signal

ON OFF

=

1~Ox~

(times/sec)

time

as a percentage.

If T1 s T2

lin>

T2

ts : Program scan time (sec)

n = n =

4-8

T1

Tf+T2X

T2

Tf+T2x

100 (%) 100 (%)

4.A2CCPU

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

MELSEC-A

4.1.6

Operation processing at momentary powerfailure

The A2C detects momentary power failure when

power supply module falls below

The A2C performs two different kinds of operation processing the

length of momentary power failure time across 20 msec allowable value.

(1) Momentary power failure within 20 msec

(a) The operation processing is (b) The operation processing resumed where normal status is restored. (c) The watch

stop. For instance, if and 190 msec respectively, an momentary power failure of 20 msec will result is a WDT error.

Momentary power failure occurs.

END 0 1 / END 0 END

I I

~ND

processing The A2C stops program

dog

timer (WDT) keeps timing while the operation is at a

the

. Power recovery

"\

i I I I

-+-----+-

operation. operation

WDTtiming

the

input

line voltage to the

the

defined range.

depending

stopped

WDT and scan time settings are 200 msec

(Sequence program continues.)

with the

output

retained.

on

o

I

'-------y'

Sequence

Fig. 4.4

(2) Momentary power failure over 20 msec

The A2C is reset. The A2C performs the initial start processing as it does when it is turned on or reset by

Momentary power failure occurs.

END 0 j

I I •

'--cE'ND

Fig.

Momentary

processing

4.5

Momentary

Power

Failure

Power failure (Initial start)

within

the

RUN key switch operation.

20

msec

/0

'i I 1===11--

~Sequence

I L Initial program

processing

The A2C stops operation.

Power

Failure

. operation

over

20

msec

oEND

4-9

4.A2CCPU

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

4.1.7

Scan time

(1) Scan time

the

Scan time is executed.

o

period in which PC one scan [0 to END (FEND)) is

Scan time

T--~T_-

----------oi[

(2) Scan time confirmation

--

----_-_-

__

Fig.

4.6

sequence

Processing of counters and timers

Self-diagnosis check

Scan Time

program

MELSEC·A

I

The A2CCPU counts the scan time between an END (FEND) instruction

to

the

next END (FEND) instruction and registers

in special registers D9017 to D9019.

(a) Special register data (D9017 to D9019)

• D9017 : The minimum scan time

• D9018 : Present scan time

• D9019 : The maximum scan time

(b) Accuracy of scan time

The accurate to scan time counted by the programmable controller

is accurate to

Therefore, if the data in D9017 to D9019 is 5, actual scan time is in the

range of 40 to 60 msec.

(c) The datain D9017 to D9019 is not cleared when

is executed; the scan time between an END (FEND) instruction and

the next END (FEND) instruction is registered.

IREMARKsl

(1) The scan time can be confirmed by the circuit monitoring operation using a peripheral

device.

* Scan time of 0 to 20 msec : 10 msec is displayed

±10 msec.

the

counted

WDT instruction

scan time

'*Scan time of 10 to 30 msec: 20 msec is displayed

(2)

The

constant scan function allows the scan time of every scan to be fixed to 8 constant

value. For more details on the constant scan function, see Section 4.2.1.

4-10

4, A2CCPU

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

4.1.8 Watch dog timer (WDT)

The watch

repeated operation function. It also monitors sequence program.

(1) Watch

The watch This setting can be changed to between 10 and 2000 msec (in intervals

of 10 msec) using a parameter.

(2) Watch

(a) The watch

(b) A watch

dog

timer

is an internal timer used to

dog

timer setting

dog

timer default value is 200 msec.

dog

timer

operation

dog

timer is reset after

tion

as

long

as PC operation is normal (scan time is within

setting).

dog

timer

error

will

occurifprocessingisnot within scan time or faulty hardware. In

the

predetermined time due to a long sequence program

detect

the

execution of

this

case, operation stops.

errors in

time of one scan of a

MELSEC-A

the

END instruc-

completed

PC's

the

(3) Response to watch

After

the

watch

(a) Infinite

1) The A2C stops communication with a remote

2) The A2CCPU can be monitored with a peripheral.

3) Error

(b) END instruction executed after

1) The A2C

2) After

loop

However, sequence program operation continues RUN key switch is set

STOP is to be

Test operation of

program using

code

Only sequence program operation continues (even when RUN switch is set in

the

communicate with a peripheral.

dog

timer counts up,

done

the

"25'

is stored in 09008.

stops

communication with a remote

execution of

timer

errors

the

following

for

STOP because swltchinq from RUN to

after

the

execution of

the

A2CCPU or read/write/verify of a sequence

peripheral is not possible.

the

watch

the

STOP position).

the

END instruction,

the

dog

processing

module.*

though

END instruction.

timer

setting expires

module.*

the

A2CCPU can

occurs.

the

3) After

the

execution of

stored in 09008.

the

4) The scan time required until

is stored in 09019 and 09018.

4

-11

END instruction, error

the

execution of

the

ENO instruction

code

"25'

is

4.A2CCPU

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

MELSEC·A

Scan time (WDT counting value)

Sequence program

operat1ion

~ND

END 0 END

==1.-I=======I-t=======-

(4) Watch

Do one of the following if than

(a) Change

(b) Change the watch

dog

timer error processing

the

watch

the

watch dog timer setting.

Setting

range:

Fig. 4.7

dog

sequence program so

Resetting

the

scan time of a sequence program is greater

timer setting.

dog

timer setting.

0 to 2000 msec

I

1

pro6eSsing time

o END

1 I

L WDT reset

Watch

that

WDT error occurs If the WOT counter value exceeds

the

.etting

(WDT

Is reset

when END is executed)

Dog

Timer

the operation time is within

I

•

(c) Reset

The watch

executed and it begins counting again from "0·. Note

reset when

POINT I

(1) The watch dog timer setting must be as indicated below if constant

scan (see Section 4.2.1) is set.

IConstant scan setting + 10 msec s Watch

(2) When the A2C stops communication with a remote terminal module.

the output state of the remote module is as

(a) A2C I/O module : all turns OFF

(b) Remote I/O module

the

program.

that

watch

the

dog

timerwith

dog

timer is reset at the time the WOT instruction is

scan time values registered in

the

WOT instruction is executed.

for

MINI-53:

the

worinstruction in

09017to09019

dog

timer setting I

follows:

depends

on EC mode setting

the

sequence

are not

4-12

4. A2CCPU

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

I

IREMARKSI

(1)":An

infinite

loop

maybecaused

step number because of a CJ instruction.

Example:

if a

program

execution

MELSEC-A

sequenceisjumpedtoa

smaller

4.1.9

xo

(1) Data

a)

b)

c)

xo

storedinspecial

09017:

09018:

09019:

OJ

Smallest

Present

Largest

registers

valueofscan

RUN, STOP, PAUSE operation processing

The A2CCPU operates in one of the following

(a) RUN state

The PC CPU operates to

the

END (FEND) instruction.

(b) STOP state

All

outputs

(Y) are

not executed.

An

infinite

struction step

CJ POto

thereby

PO,

END instruction.

09017to9019

time

the

sequence program repeatedly from step

turned

off and sequence program operation is

loop

calling

between

precluding

is caused if

forajump

pointPOand

the

three

there

is no

step

jump

beyond

step

to a

executionofthe

states:

in-

CJ

(c) PAUSE state

Execution of a sequence program is suspended. The status of all outputs

The

PC

described

(Y) before entering

CPU's

operation

below.

the

PAUSE state are saved.

processing

in

each

operation

state

is

4-13

4.A2CCPU _-------------------

MELSEC-A

(1) Operation processing in RUN state

(a) The RUN state indicates the state in which

sequence program repeatedly from instruction.

(b) The

(c) In the RUN state,

output varies according to the 'STOP parameter.

1) Output of operation state before STOP After

are output,

2) Output after operation Outputs The time required before starting sequence program operation

after to seconds.

until

the

status of the

the

outputs (y) saved before the entry to

the

PC CPU executes the sequence program.

(Y) are

the

changing

the

system

operation state is changed from RUN to STOP or PAUSE.

output

configuration;

the

outputs

after one scan of

the

switch from STOPto RUNvaries according t

processing illustrated in Fig. 4.8 is repeated

....

(V)

it is

step

at

RUN

the

usually

the

PC CPU operates a

0 to

the

entry to

output"

the

mode

the

sequence program.

between 1

END (FEND) I

RUN state

set with a

STOP state

and

3

RUN

Is the output

mode at STOP-to-RUN

switch before

operation'?

YES (Before operation)

The

status of the outputs M

which have

before entering the STOP

state is

I/O modules are refreshed

Sequence program operation processing

END (FEND) instruction

END

Operation state check

been

set

to the

Step 0

to

processing

I

saved

device

area.

)

NO (After 1 scan)

•

I

Fig. 4.8 RUN

IREMARKSI

For details on individual processing in Fig. 4.8, refer to Section 4.1.1 to Section

4-14

Operation

Processing

4.1.3.

4.A2CCPU

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

I

MELSEC-A

(2) STOP operation processing

(a) The STOP state indicates the state in which sequence program

operation has been STOP switch.

(b) When the PCCPU entersthe

before other than

(c) In the STOP state,

until the operation state is changed from STOP to RUN or PAUSE.

turning

the

stopped

off all

outputs

(Y)

the

processing illustrated in Fig.

(

Output state is saved and all

outputs are turned off

I/O modules are refreshed

using

stop

(Y).

is retained.

STOP

I

the

RUN switch or the remote

state, it saves

Note

that

)

the

output

the

status of devices

4.9

is repeated

I

CPU error check

statuses

I

Operation state check

I

Fig. 4.9 STOP

IREMARKSI

(1) To set the PC CPU in the stop state, use one of the following

a) RUN

b) Remote STOP contact

c) Peripheral device

d) STOP

switch

J-For details, refer to 4,2,3.

command:

For details on individual processing, refer to the ACPU Programming Manual (common

instructions).

Operation

Processing

methods:

4-15

4.A2CCPU

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

(3) PAUSE operation processing

(a) The PAUSE state indicates

processing is stopped by the remote PAUSE signal. The status of

the outputs

(b) In

the

repeated until the operation state is

or STOP.

(V)

and the data memory are retained.

PAUSE state,

(

I I

I

the

I/O modules refreshed

CPU error check

Operation state check

MELSEC-A

the

state in which sequence operation

processing

PAUSE

j

illustrated

changed

)

in Fig. 4.10 is

from PAUSE to RUN

I

1

I

1

I

•

Fig. 4.10 PAUSE

IREMARKSI

To set the PC CPU in the pause state, use one of the following

a) Remote PAUSE contact b) Peripheral device For details, refer to Section 4.2.4.

Operation

Processing

methods:

•

4-16

4. A2CCPU MELSEC-A

(4) The relationship between the A2CCPU operation state and operation

processing is indicated in Table 4.3.

I

~

A2C

Operation

Processing

State

RUN~STOP

STOP ~ RUN Started

~

PAUSE

RUN

PAUSE ~ RUN Started

Sequence

<,

Stopped

Stoppad

(5) Processing while sequence program operation processing is stopped

Table

Processing

I/O

Refresh

A2C

State

Table

Operation

4.3 A2C

Program

Output status is savedbythe

and all outputs switched off. retained.

Depends on the

output mode set in the parameter. at the

Output status is retained.

Operation resumes In the PAUSE output status.

is indicated in Table 4.4.

4.4

CPU

Check

Error

Processing

Timer!

Counter

Present

Value

Contact

Statu.

Update

During

and

Operation

External

Output

STOP..RUN

Program

Constant

Scan

Processing

(with

constant

scan

Processing

as

Operation

Refresh

Processing

set)

Data

Memory

(M,l,S, T, C, D)

Statusatthe

Operation is resumed in the status

tima

Status at retained.

Operation resumes in the status at the time of PAUSE.

time

of STOP.

the

timeofPAUSE

of

Stop

Link

Sampling

Trace

Processing

Operation

State

STOP

Check

is

RUN (END

processing)

STOP PAUSE Executed Executed

Executed Executed Executed

Executed

- -

Executed Enable Executed Executed

Enable Enable

-

Executed Executed

4-17

4. A2CCPU

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

4.2

Functions

Function

Constant scan

Latch (power failure

compensation)

Remote RUN/STOP

Pause

Status

latch

Sampling

trace

MELSEC-A

Functions of

•

Execute pendentlyofthe

•

Setting

allowed

• Retains

powerfailure

• L, B, T, C, 0 and W can be latched.

•

Allows

remote

external

•

Stops

operation

• Pause

•

function

• Remote

•

Peripheral

Stores

all

status

latch

The

stored

Samples intervals

the A2C. Section 4.2.6

the

CPU module are listed in Table 4.5.

the

sequence

device

Table

4.5

programatthe

scan

time.

between10and

dataifthe

occurs20msec

run/stop

input,

computer)

with

output

maybeswitched

pause

contact

device

datainthe

conditionisswitched

data

can be

the and

specified

stores

device

the

ListofFunctions

Description

predetermined

2000

msec.

PC Is

switched

01 longer.

from

external

with

(Y)

status

monitoredbythe

sampling

device

RUN/STOP

status

on by any of

latch

on.

operating

resultinthe

retained.

intervals

off

or reset or

(e.g.

switchinRUN

the

areainthe

peripheral.

statusatpredetermined

sampling

momentary

peripheral,

position.

following

A2C

when

trace

ways:

inde-

the

area

Ref~r

Section

Seetion

in

I

to:

4.2.1

4.2.2

4.2.3

4.2.4

4.2.5

Offline

switch

Priority

ERROR LED

setting

•

The

•

Allows be

disconnected

•

Sets

stored

data

the

device

on/offofthe

can be

monitoredbythe

(Y, M, L, S, F, B)

from

the

sequence

ERROR LED in

used

with

program

the

caseoferror.

peripheral.

the

OUT

operation

instruction

processing.

to

Section 4.2.7

Section

4.2.8

•

4-18

4.A2CCPU

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

MELSEC-A

4.2.1

Constant scan

Because the processing time of each individual instruction in a sequence program differs depending on whether or not the instruction is executed, the scan time differs accordingly for each scan.

The constant scan function sets such varying scan times to a fixed value regardless of the sequence program processing time.

Scantime - constant scan function Is not used

END

Sequence

~

o END 0 END

~

program

END

processing

I I' I I I

50

msec

I

Scan time - constant scan function Is fixed to 70 msec

END

I

Sequence

~

o END / 0 END

I'

50

msec

70

I'~

Wait

msec

program

END

- ' I I

~

20 rnsec

60

processing

60

msec

70

msec

I

0

I

~

--

10

I

0

+------1

mslec

50

70

I

T

50

msec

END

mS80

msec

END 0

. I

~--+-

20 m

f-----

I

0

ec

Fig. 4.11

(1) Setting range

(a) Constant scantime can be set in

Enter the required constant scan time to special register D9020 in units of 10 msec (setting value between 10 and 2000).

If D9020 is set outside scan time will be set as indicated below.

-32768 1 to

200

201 to

Setting

32767

to 0

for

D9020

Constant

the

Scan

Function

the

range of 10 msec to 2000 msec.

range of 1 msec to 200 msec, the constant

Constant Scan Time

Not

set

10

msec

to

2000

msee

2000

msec

4-19

4.A2CCPU

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

(b) The watch

time setting.

If

the

setting, a WOT error might occur. The relationship between

watch

dog

timersetting must be greater

watch

dog

timer setting is smaller than

the

dog

timer setting is indicated below.

constant scan time setting

o< Constant scan time setting < WOT setting -1

(c) The set constant scan time must be greater

time of the sequence program. If the sequenceprogram scan time is

time, the constant scan function is not performed correctly.

Constant scan setting

Constant

scan

Sequence

program

I I

10 20 30 40

0

I I I I

I

END 0

H-I

35 msec

40 msee

I

10 20

I

5 mseo

30 40

I I I

53

msec

END

H

longer

10 20

I I

0

than

30 40 10 20

35 msee 37 msec

MELSEC·A

than

the

constant

the

constant scan time I

the

maximum scan

than

the constantscan

I I I I

HI

34 msee

2

eo 40

meec

and

Hf-

I

scan

8m

the

sec

Scan

in which c10nstant scan is

not executed correctly

Fig.

4.12

Scan Time

(2) Setting for constant scan execution

(a) Constant scan execution

A constant scantime setting is written to program or

(b) Constant scan not executed

The value the

peripheral device.

the

peripheral device.

"0'

is written to 09020 using

Larger

than

Constant

09020

the

Scan

Setting

using

the

sequence

sequence program or

•

4-20

4. A2CCPU

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

MELSEC-A

(3) Caution

(a) The constant scan time setting value stored in D9020 is cleared to

the

zero (0) when

switch.

Therefore, it is necessary to write

scan is required from is started or reset.

Normally ON contact

A2CCPU is powered up or reset using

the

following program if constant

the

first scan immediately after

the

.>

~0~16~__-[~~

(b) If a momentary power failure of less

constant scan time is lengthened accordingly. In constant scan function is not executed correctly.

I MOVP

K [ J[ J

___

I

D9020

I

Constant scan time setting value

than

H

20 msec has occurred,

this

the

RUN

A2CCPU

case,

the the

(c) If a peripheral device is connected to

is lengthened by between

the

time (0.2 msec) required

A2CCPU and

the

peripheral device.

the

A2CCPU,

the

set scan time

for

communication

4-21

4.A2CCPU

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

4.2.2

Power failure compensation

MELSEC·A

for

device data In the A2C (LATCH function)

Each individualdevice of the A2CCPU is reset when

up. Device will be cleared when a momentary power failure than 20 msec. After being reset or cleared, all device data is reset default values (OFF

The latch function retains reset by momentary power failure occurs

Sequence program operation is

(1) Applications

(2) Latch devices and latch range setting

turning

The latch function is used to continue the control by retaining as

the

number

products,

for

more than 20 msec.

(a) The devices whose data can be latched are listed

for

bit devices and 0

the

device data in

on

the power or pressing using the RUN switch or a

for

the

of

completed

and

the addresses should a momentary power failure

for

word devices).

more

than

same whether

products,

the

event

20 msec.

the

A2CCPU is powered I

occurs

that

the

A2CCPU is

data is latched or not.

data

number

of

below:

defective

for

more

to

the

such

occur

•

1) Latch relay

2) Link relay

3) Timer

4) Counter

5) Data register

6) Link register

(b) The latch range is set in

POINTI

Device date within the latch range is backed by installed on the A2C.

(1) The battery is required even when the operation is performed using a

ROM which stores the sequence program.

(2) Device data within the latch range is destroyed if

is disengaged from the A2C when

(TO

(CO

(LO

to L2047)

(BO

to B3FF)

to T255)

to C255)

(DO

to 01023)

(WOtoW3FF)

the

peripheral parameters

the

A2C is

being

per

the

battery (A6BAT)

the

battery turned off.

device.

connector

•

4-22

4. A2CCPU

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

(3) Clearing the latched data

(a) To clear the latched data to

formed. tioned below.

After the latch clear operation, the data in the

"latch

following:

clear" also clears unlatched device data, as men-

1) Y, MIllS, F, B

Turned off

2) Special relays Data is retained

3) T, C

Contacts and coils are turned off; present value is set to O•

4) 0, Z, V, W, A

Data is set to zero.

5) R

MELSEC·A

the

initial value, "latch clear" is per-

the

each device is set to

Data is retained.

6) Special registers

Data is retained.

(b)

latched

1) Using the RUN switch

POINi'T

To cancel

or RESET position while the latch clear operation is being attempted. (1) RUN position

The A2CCPU starts operation in the same manner as when the RUN

switch is placed in the RUN position from the STOP position.

data can be cleared in either of the following

QTurn

iQ

iiQ

the

RUN switch from

position three times.

The RUN

data is ready to be cleared.

Turn the RUN switch from position while the RUN

cleared.

data latch clear operation, turn the RUN switch to

lED

starts flashing. This indicates

the

lED

STOP position to

is flashing;

two

that

the

latched data is

methods.

the

latched

the

L.ClR

RUN

(2) RESET

2) Using GPP/PHP/HGP

position:

"All

be used for latch clear. (For details, read Operating Manual.)

The A2CCPU is reset.

DEVICE CLEAR" of the test functions in

4-23

the

PC

the

GPP/PHP/HGP

mode

can

4.A2CCPU

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

MELSEC·A

4.2.3

Running and stopping the A2C from external devices (Remote RUN/STOPfunction)

The

RUN switch is used "remote RUN/STOP" means controlling A2CCPU nals (peripheral devices, remote RUN contact) with in

the

RUN position.

(1) Application of remote RUN/STOP

Remote RUN/STOP control is possible in

(a) The A2CCPU is out of reach.

(b) The A2CCPU is located in a control box.

(2) Operation

Execution of sequence program operation is controlled as indicated •

below in response to

(a) Remote

The A2CCPU

END (FEND) instruction.

stop

stops

for

A2CCPU

the

remote RUN/STOP operation.

after

the

run/stop

the

following cases.

sequence program is executed to

control.

the

The

with external sig-

RUN switch placed

operation I

the

(b) Remote RUN

The sequence program is executed again from

RUN operation after the A2CCPU has been STOP operation.

(3) Executing remote RUN/STOP

Remote

methods:

(a) Remote RUN contacts

RUN/STOP

Remote RUN/STOP control is possible by remote RUN contacts which are set with parameters.

1) When remote RUN contacts are turned ON. RUN state.

operation

is

possible

step

0 by

stoppedbythe

through

turning

the

on

the

A2C is set to

and

the

remote

following

off

..

the

•

the

4-24

4.A2CCPU

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

I

2) When remote RUN STOP state.

Switching between RUN and STOP is executed after END(FEND)

execution.

Remote RUN contacts

RUN/STOP state

Fig.

4.13

Remote RUN/STOP

(b) Peripheral device

Remote RUN/STOP control is command from a peripheral device.

StepO_

RUN

contacts

END

ON

STOP

f--------

'-------v----"

Stop

Timing

are

turned

StepO_

state

Using

possible

OFF,

the

using

MELSEC·A

the

A2C is

END

0

Remote

the

RUN

remote RUN/STOP

setto

the

Contacts

Peripheral

Flg.4.14

{ Bern

device

A2C : RUN/STOP state

Remote Peripheral

cte

command Remote

command

RUN/STOP

Device

(4) Caution

(a) Note

STOP command.

2) To set

Step

0 END

ON

~O'

RUN

OFF

RUN

Timing

the

Using

the

following points because

1) The A2CCPU is set to the

is given from

the

A2CCPU from

remote RUN

STOP

,

Remote

the

___

----

v

STOP

state

RUN/STOP

the

A2CCPU gives

STOP state when

contact

the

STOP state back to

or a peripheral device.

Step

0

ON

5

.

Command

the

STOP command

END

0

from

prioritytothe

the

RUN state, it is necessary to set all external factors (remote RUN contact, peripheral device) which caused

the

remote STOP to

the

state.

a

RUN

IREMARKI

For details on A2CCPU operation processing in a RUN or STOP state, reter te Section 4.1.9.

4-25

4.A2CCPU

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

MELSEC-A

4:2.4

Stollplng

the

sequence program operation retaining outputs (PAUSEfunction)

The pause function outputs

(1) Application

(2) Using remote PAUSE

(Y).

process

In

(Y)

when

(a) The PAUSE state

END(FEND) instructionof contacts

When

is executed,

(b) By

opening on a peripheral device, program operation resumes from

stops

A2CCPU operation while retaining

control, it is often required to retain

the

A2CCPU

close and

the

END(FEND) instruction of

the

stops

contacts

A2C is set to PAUSE and

remote

operating.

(M9041) close after

the

scan

during

the

PAUSE permission flag (M9040) is set.

the

PAUSE the

contacts

PAUSE state is canceled,

step

scan

or by switching

O.

the

statusof all I

the

status of

the

which

the

after M9041 has set

its

operation

the

execution of

remote PAUSE

stops.

and

outputs

the

off

M9040

sequence

Remole PAUSE

contact

M9040

M9041

RUN/STOP state

Fig.

4.15

0---

OFF

RUN

PAUSE

END

o

----END

ON

I

ON

I

ON

~edOnWhen

conditions to set the CPU module In the pause state are

satisfied

Timingbythe

Remote

PAUSE

PAUSE state

PAUSE

-

O-END

--

Contact

0-

•

4-26

4.A2CCPU

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

(3) Peripheral device

(a) The PAUSE state contacts (M9041) close after the execution of

END(FEND) instruction of the scan

during

which

the

command from a peripheral device is received. When the END(FEND) instruction of the scan after M9041 has set

is executed, the A2C is set to PAUSE and its operation stops.

(b) When

received,

operation resumes from step

Remote PAUSE

contact

Remote RUN

command

M9041

RUN/STOP

state

the

remote

the

0---

OFF

RUN

command

PAUSE state is canceled,

o

----END

END

ON

~edonwhen

conditions

CPU module In the

pause

satisfied

state

to set

are

O.

fromaperipheral

and

the

PAUSE

~

PAUSE

state

sequence program

----END

o

-r

-

MELSEC·A

the

remote PAUSE

device

0-

is

Fig.

4.16

PAUSE

POINT

To switch on or off the output

PAUSE state contacts (M9041).

M20

f------{Y70

M9041

1-+t------{V71

MO

Timing

(V)

the

In

determines

Switches to OFF in

Switches

by

a

Peripheral

Device

in the PAUSE state, interlock with

PAUSE state,

status

to ON in

statusofM20

of Y70.

the

PAUSE

the

PAUSE

state.

the

4-27

4.A2CCPU

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

4.2.5

Status latch

MELSEC-A

The monitoring function of a peripheral cannot confirm the status of each

device all data to the status latch area when the sequence program.

The GPP/PHP/HGP to monitor it.

the

time. The status latch function transfers

device

~-------------------------------,

Device

memory

area

File

register

area

data

saved

A2CCPU GPP/PHP/HGP

Transfer

by

Instruction :in the PC: ISP't

SlT

using

Status

latch

area

theSlT

I,

:Reading: 0"

mode :

+i,:

and

saves

SlT

instruction is executed in the

instruction

can

the

be read by

r-----------------------------,

If:

ay

. or :

mom

onng :

~~~~~s

area

, ,

L

...

<J~,:

device

the

I

~

I

Fig. 4.17

(1) Application

The status latch function can be used to check fault condition exists during debugging. ,

It is also used to find causes when a fault condition exists sequence program execution by making a program

Sl

T instruction if such a condition exists.

(2) Processing

(a) The following data is stored in

instruction is executed.

1) Device memory X, Y, M, T, C Contact and coil ON/OFF data and present

D, W, A, Z, V : Stored data

2) File register (R)

l,

S, F, B ON/OFF data

Status

value

Latch

Sequence

the

status latch area when

device

that

will execute

data

when a t

during

the

theSlT

41

Stored data

4-28

4. A2CCPU

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

MELSEC-A

(b) Data is stored to

executed.

With devices which

the

tion,

after

Example: If a devicewhich

and after before and after

[Circuit example] [Monitor display of status latch data]

the

I"

(3) Caution

data

the

execution of

turns

SLT instruction in a program,

the

10 10

Y11

the

status latch area when

turn

on/off or store

to be stored in

the

on and off with

execution of

I'

data

the

status latch area differs before and

SLT instruction.

the

same

condition

the

SLT instruction.

When the SLT instruction is

executed, Y10 is ON; ON is

displayed for the monitor.

When

Y11

executed, Y11 is OFF; OFF is

displayed for the monitor.

ON/OFF state will differ

the

SLT instruction is

using

the

same condi-

is present before

the

SLT instruction is

(a) Execution of

creased by

Therefore,

dog

timer setting and constant scan time setting for

taking

Processing time

--------

(msec)

these

Table

the

SLT instruction causes

the

value indicated below.

take

this in consideration when determining

into

consideration.

4.6

SLT

Device

11 msec

Instruction

Memory

Only

Execution

Device

meec

31

the

Memory

scan time to be in-

the

watch

the

A2CCPU

Time

and File Register

4-29

4.A2CCPU

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

:

MELSEC-A

4.2.6

Sampling trace

A2CCPU GPP/PHP/HGP

It is

not

possible to check

and

the

datainthe

The sampling trace function samples fixed intervals and stores

Upon execution of

trace

area is sampled

data is latched. It is possibleto monitorthe

it with

the

GPP/PHP/HGP.

r-------------------------------------------,

,

Device

area

File

register

area

Data of the

designated

device

~2

~:

Sampling trace

*

Data in the first

1

second

Data in the third

fourth sample

Data in the fifth

Data in

, ,

~6

, ,

Data In the

n-l

n

time sample

Data

time

sample

Data in the

sample

Data in the

sample

I

sample

the

sixth

(n-l)

in the n

sample

area

the

transition of the ON/OFF state

word devices with a peripheral device

data

from

the

designated

the

STRA instruction,

for

the

data

,

Reading

to

PHP/

GP

:H

,

~

r--------------------------------------,

1

2

GPP/

3

4

,

5

,

, ,

6

, ,

i I

in:

, ,

~--------------------------------------~

sample data to

designated

stored in

Sample

1 I

trace

the

sampling

the

data stored in

numberoftimes

the

samplingtrace area by reading

area

Display of

sampling trace

data

the

designated

number

times

-(]

I

monitor

trace area.

for

of

for

bit devices

devices at

the

and

the

Monitoring

-sampling

trace data

,

function.

I

sampling

device

After

the

:next

,

:sample.

~-------------------------------------------~

dataissampled

data

sample

-----------I

overwrites the first

*

n times, the

After the execution of the STRA instruction, device

designated

(1) Application

data

number

By ging intervals

of times

Fig.

using

the sampling trace function, it is possible to shorten

time by confirming

during

and

the

4.18

Sampling

debugging.

4-30

data

in the sampling trace area Is latched.

Trace

the

data of

sampling is carried out for the

the

designated devices in defined

•

debug-

4. A2CCPU

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

MELSEC·A

(2) Devices which can be sampled

I

It

Devices and below.

(a) Bit devices (X, Y, M, L, S, F, B,

Max. 8 points

(b) Word devices

Max. 3 points

(3) Number of sampling times

The number of sampling times involves the following two

number of sampling times and the number of sampling times after

execution of

(a) Total number of sampling times

This sets the area where the sampling data is stored. Selling

times).

(b) Number of sampling times after the execution of

tion

the

number of pointswhich can be sampled are indicated

TIC coil, TIC contact) :

(TIC present value, D, W, R, A, Z, V) :

the

STRA instruction.

is possible in

the

range of 0 to

1024

times (in units of

the

cases:

STRA instruc-

total

the

128

This

selling

pling trace data after the execution of the STRA instruction.

Setting is possible in the range of times.

The

number after the execution of the STRA instruction

of sampling times

I I I

Total

is used to end the sampling trace and latch the sam-

s Total number of sampling times s

1 STRA

Number of sampling times after

the execution of STRA instruction

number

of sampling times

~

Fig.

4.19

instruction

Device

number of sample times after the execution

of the STRA instruction

NumberofSampling

0 to

executed

dataislatched

1024

times in units of

allar

tha

Times

1024

dasignatad

128

times

4-31

4. A2CCPU

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

(4)

Sampling

Sampling execution of END

(a) After

Sampling sequence

(b) In

Sampling

(n:

[

After execution of END Instruction

~-------r-------...,_--_j

NO

intervals

intervals are

execution

trace

program

defined

Oto

In this setting, sampling trace data is even taken during the execution of

sequence program. J

intervals

trace

199).

Step

0

set

instruction

of END

dataistaken

is executed.

dataistakenindefined

NO

in one of

or in

defined

instruction

each

the

time

following

intervals.

the

intervals, 10 x n

methods:

END

Sequence program

execution

MELSEC·A

after

the

instructionofthe

msec

al

I

•

In defined Intervals

END

Step

0

Fig.

4.20

ExecutionofSampling

Sampling trace execution

Sampling trace

execution

•

Trace

4-32

4. A2CCPU

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

MELSEC-A

I

4.2.7

Offline switch function

While possible to turn the sequence program OUT instruction devices on and off

with a peripheral device test function.

The offline switch function allows these devices to be turned on and off while the

A2CCPU is running with a peripheral device as the test function.

It is possible to check operation of OUT instruction devices, which are turned on/off by the sequence program, the

output module and an external device with the offline switch function.

the

A2CCPU is running (sequence program being executed), it is

and

f-------------<c:)()

to check

Offline switch closed

OUT

......

.....Offline state

the

wiring between

instruction

Online state

.1

.2

not

~

.'

: The online state is established when the offline switch is closed. The

instruction device is controlled (turned on/off) by the sequence program.

*2

: The offline state is established when the offline switch is opened.

instruction is isolated from the sequence program. In the offline state, it is not possible to control the

(1) Devices which can be used by the offline switch function

The devices which can be used by the offline switch function are indicated

(a) Outputs

(b) Internal relays (M)

(c) Latch relays (L)

(d) Step relays (S)

(e) Link relays (B)

below:

(V)

OUT

Fig. 4.21

devices by the sequence program.

Offline

and

Offline

Online

switch

State

opened

The

OUT

(f) Annunciators (F)

4-33

4.A2CCPU

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

(2) Status of devices in

The

device

described below. (a) The ON/OFF state

established is retained.

(b) When a forced set/reset is conducted

offline state, the reset/set state afterthe forced set/reset is retained.

(3) Operation procedure

(a) To set the A2CCPU in

peripheral device.

(b) To return the A2CCPU back from

use either of the following two methods.

1) Reset

2) Reset the A2CCPU with the

POINTI

status

the

offline state

in

the

offline

that

exists before just before the offline state is

the

offline state, set

offline switch setting with a peripheral device.

MELSEC-A

state

RUN key-switch.

(offline

using

the

offline state to the onlinestate,

switch

a peripheral in

the

offline switch with a

opened)

is I

the

(1) Devices set in the offline state

sequence program.

The devices set in the offline state the

online state by resetting

test operation.

(2) The devices returned from

turned

Before returning these devices to conditions of an OUT instruction. Return to the online state after making sure

to

ON/OFF with a peripheral device.

that

no problems will arise when

the

online state.

the

cannot

during

the

offline switch after

offline state to

the

be

turned

testing must be returned to

the

online state, check

the

ON/OFF with a

the

completion of

online state can be

the

devices are returned

input

•

4-34

4. A2CCPU

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

4.2.8

Setting priority

for

ERRORLED Indication

Priority of A2C ERROR LED lighting is

(1)

Priority

Hi9h

Low

Changing

Table

Error which causes the A2CCPU to

stop

unconditionally.

1/0

module

Fuse

blown

Special

Link

parameter

Operation

CHK instruction execution 3

Annunciator

Battery

priority

4.7

Error Contents

verify

error

module

error

(F)

error

turning

Error

error

indicated

Indication

ON

in Table 4.7.

Priority

Error Item

Number

-

1

2

4

6

MELSEC-A

ERR LED

Lit

Flashes Lit

(a) ERROR LEO lighting priority can be

ting

for

the

error which permit sequence program operation to be

continued after an occurrence of an error.

Notethat

the

priority level of

operation unconditionally cannot be changed.

(b) Error indication priority can be

priority

storing

registers).

Priority in

orderin09038

09038

and

09039

lustrated in Fig. 4.22.

Priorityin09038

I

Default

valueof09038

I

b15

and

09039

to b4

L

19nor.~

to

and

09039

b4

b3tobO

09039

b3to

bO

b15tob12b11tob6

b15to

changed

the

error

which causes A2CCPU to

changedbychanging

09039

L

b12

and

Error

b11 to b8

(LEO

indication

the

error setting items are il-

09039

b7tob4

item

setting

09038

b7to

from

area

b4

the

default

the

priority

b3tobO

b3 to bO

set-

stop

required

order

Fig.

~

4.22

Error

PriorityIn09038

6 4 3 2

and

09039

4-35

and

Error

Setting

I

Items

4.A2CCPU

___________________

MELSEC·A

(c) The ERROR LEO is not lit if an error,

priority and error of error item numbers

In corresponding error

(2) Relationship between priority

(a) If an annunciator (F[ ]) is turned ON, the

is stored in 09009 and 09125 to 09132.

Once the annunciator number is set in cannot be reset using for

ON.

To reset the set annunciator

error, set a priority for the annunciator error item number.

POINTI

(1) The priority

reset becomes effective. Changing is ignored unless the CPU is reset or then back on again.

order

has not been set, occurs. If all

09039,

this

which highererror indication priority is set than the annunciator

for

example, the ERROR LEO will

case, however,

order

active when the power is turned ON or

the

code

is stored in

order

the

RST F[ I or LEOR instruction if an error

for

which

1 to 6 occurs.

M9008 (CPU error flag) is set and the

09008

and annunciator resetting

numberofthat

the

registers,

number

the

at an occurrence of another

priority simply in

the

power is turned off once and

error

bits

are

not

be lit when any

(CPU

error

the

indication

·0'in09038

register).

annunciator

the

number

the

CPU is

registers

I

4

(2) Set the error item number set at

ERROR LEO keeps on Table 4.7. ,

Example: The error item setting area of error item

the

ERROR LEO turning OFF when an annunciator turns ON.

turning

09038or09039

off at

the

error occurrence shown in

number

to 0 so

4 is set to 0 to keep

that

the

~

4-36

4.A2CCPU

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

MELSEC-A

I

4.2.9

Total

Mode

Control functions of remote I/O modules and remote terminal modules

The following functions and settings are provided for the A2C to control

remote I/O modules and remote terminal modules.

To use only remote I/O modules, set the total

mode. When remote terminal modules are used in combination with remote I/O

modules, execute setting for remote terminal modules in addition to the total number of stations and the mode.

For these settings, use either of the following

methods:

(a) Set with special registers (D9021 to 09036, 09173) by a sequence

program when system FO prior to SW3GP-GPAA is used.

(b) Use parameter remote terminal setting when SW4GP-GPPA system

FO is used.

Setting Item

number

of stations 64

Automatic online return

provided not provided

Defaull

5e"lng

1064

1 0:

Automatic online return

provided

Automatic online return

1 :

Range Special Register Number

number

09036

09173

of stations and the

Remote

terminal

setting

Station number

Protocol

2:

Transmission stop at an

occurrence of online error

None

Mitsubishi standard

protocol

(MINI

protocol)

1 to 61 09021 to

0:

Mitsubishi standard

protocol

1 : No-protocol

09035

09034

POINTI

If

anyone

the MINI-S3 line error and following processing

• All the settings are reset to defaults to execute

of the settings is outside the allowable setting range, it causes

occurs:

the

control.

• The M9061 (communication error flag) is set and "1· is stored in 09061 (communication error cause storing register).

I

Setting

for

Remote

Terminals

Using

Parameters

I

When using the SW4GP-GPPA system floppy disk, use a parameter to perform remote terminal setting.

For the procedure of initial setting of the A2C using parameters provided by the

GPP/PHP, refer to

the

A6GPP/A6PHP(SW4GP-GPPA) Operating Manual.

4-37

4.A2CCPU

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

MELSEC-A

Ilnltial

When using the SW3GP-GPPA system to perform initial setting.

The following gives an example of programming setting with a sequence program.

(1) Start programming from

(2) Begin with designation of "LO M9038' instruction.

(3) The program should

(4) Use an MOV instruction to store data to 09021 to

A program which does not follow these rules stated above is not regarded as an initial setting program.

---------.-

Example:

Setting

09036

Using

Sequence

end

and 09173 is used.

_--------

step

Program

O.

I

floppy

disk, use a sequence program

for

executing A2C initial

at a step where a device other

09036

__

_-------

----_._--_

than

and

_---_

09021

09173.

_---~

to

I

~

An example initial setting program below.

(Slation 1)

AXllC

(4stations) (4stations)

XOOO

10 10

A2C CPU

X01F

(Slalion

(4 stations) (4 stations)

17)

AY51C A68AOC

X080

10

XOOF

[Initial Setting Program)

C M9038 (fixed)

M9

o

~8

~

/

MOV I 1(20 I 09036

MOV I K9 I 09021

MOV I K13 I 09022 I-

for

the following network is indicated

(Slalion 5)

AXllC

X020 X03F

(Slalion 13)

X060

10

X07F

MOV (fixed)

I-

Selling numberofstallons

(20

}

for

Ihelolal

slslions)

Setting for remote

terminal modules

(Slall

A061C

(4stations)

on

040

05F

9)

10

MOV I Kl I

I J

09173

~

I-

Selling

for Ihe

mode

To

end

a program wilh a 4

device other than 09021 to

09036

and

09173.

4-38

•

4.A2CCPU

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

(5) Total number of stations

(a) The total number of stations is set to determine the range

refresh. Set the last station number of remote I/O modules or remote ter-

minal modules connected to the A2C. If

the

last station (remote I/O module or remote terminal module) occupies two or more stations, this taken into account. If the setting is required for station remote I/O module which occupies 4 stations, for example, the setting for the total number of stations is "13'.

(b) I/O refresh is executed

the station numberwhich is set as the total If

the

setting for the total number of stations is "20', I/O refresh is executed for remote I/O modules modules whose station number is in the range of 1 to 20. With this setting, remote station

(c) If

the

setting

the

setting is replaced with a default.

number

1/0 modules and remoteterminal modules having a

larger than 20 is not refreshed.

forthe

for

up to

total number of stations is

number

the

remote module assigned with

of stations must be

number

and

"0',or"65'

MELSEC·A

for

I/O

number

of stations.

for

remote terminal

or greater,

"10'

example,

(d) Setting of a number which is larger than the

actually connected to the A2C, a communication error

the

stations

(6) Mode

The mode setting is used for data communications between and a remote

The set mode becomes effective when the A2C is turned on, it is reset, or its operation status changes from STOP/PAUSE to RUN.

(a) Automatic online return provided

In this mode, data communication is executed between the A2C and a remote I/O module and remote terminal module.

If a communication error occurs with any of the modules in the link, data communication is executed only with modules operating correctly.

Data communication with the faulty station will restart automatically when it recovers normal operating state.

that

are not actually connected.

1/0 module or remote terminal module.

number

of stations

occurs

the

with

A2C

4-39

4.A2CCPU

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

MELSEC·A

(b) Automatic online return

In this mode, data communication is executed between a remote I/O module

II a communication error occurs with any data communication is executed only with modules operating correctly.

Once a module is disconnected communications when it recovers normal operating state.

To restart data communication with a module disconnected the

link,

turn

off

the

reset it with the RUN key switch.

(c) Transmission

1) II data communication error in the link, data communication stops over

To restart data communication in the link, A2C

and

switch.

stop

then turn it back on again or reset it with

not

provided

and

remote terminal module.

01

the

modules in

Irom

the

link, it cannot restart data

powerto A2C

at an occurrence01online error

and

occurs

then

turn

with

anyone01the

the

turn

it back on again or

the

entire link. •

off

the

A2C and

the

link,

Irom

stations

power to RUN key

I

2) The setting station modules connected to the A2C.

If a

number

is regarded as the

(7) Remote terminal

The

remote terminal modules (up to and attribute.

(a) First station

The head station number (station number set with the station number

setting switch)

should be set

(b) Protocol

Set attribute

1) Mitsubishi standard protocol (MINI protocol) Setting

lace protocol.

lor

module (AJ35PTF-R2) should be

lor

the total

number

14

number

lor

01

is greaterthan

laulty

setting

modules); the setting includes

01

lor

the

station number.

each remote terminal module.

remote terminal modules other

number

remote I/O

the

station precluding data communication.

is necessary

the remote terminal modules to be used

01 stations should be

modules

last station number, such a station

and

remote terminal

to

use remote terminals

the

station

than

RS-232C inter-

the

Mitsubishi standard

the

last

number

•

2) No-protocol Setting

be

lor

the

no-protocol.

an RS-232C interlace module (AJ35PTF-R2) should •

..

4-40

4. A2CCPU

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

4.2.10 Output from the ERRterminals

The ERRterminals are used to output and self-diagnosis errors (at operation stop) mentioned below. Output of

I

these signals is enabled even when the A2C has sequence program. (When turned ON.)

Output of error signals other than those mentioned below is also enabled from ERRterminals by turning ON M9089 by use of

the

ERRterminals are turned ON. M9090 is also

Error.

Initial setting circuit error OFF

• Communication error due to

line

MINI-S3

link line

errors

S.~-

diagnosis error OPE. CIRCUIT ERROR ON

(Operation WDT ERROR

slop)

breakage

• Station error in the stop at

faulty station detection mode

•

Send

under

error

•

Receive

INSTRUCT CODE ERROR PARAMETER ERROR

MISSING END INS, CAN'T EXECUTE (P) CHK FORMAT ERROR RAM ERROR

END NOT exECUTE UNIT VERIFY ERROR (Stop) FUSE BRERN OFF (Slop) SP. UNIT ERROR (Slop)

ROM ERROR

overrun error

terminals

ON

MELSEC·A

signals of MINI-53 link line errors

ERR

stopped

Error

Lit Lit

Lit

operation with the

the

sequence program.

RUN

LED

Flicker

MIOIO

OFF

ON

Specification and external connection of the ERR terminals

Item

Insulation method Photocoupler insulation

Rated load voltage 24 VAC

Operating load voltage range 10.2 to 31.2 VDC

Maximum load current 50 rnA

leak

current at OFF 0.1 rnA

Maximum

voltage

drop

at ON 1.5V (50 rnA)

Speclflcetlon

-

External connection

~~~

ERR+

9

ER,~-

"

24VDC

4-41

4.A2CCPU

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

4.3

Fault

Detection

4.3.1 Self-dlagnosls

MELSEC-A

The self-diagnosis function checks occurrence of errors and faults by A2C itself.

The A2C self-diagnosis function includes the

(a) CPU error (b) MINI link line error (c) Remote terminal error

(1) CPU error

CPU error includesfaulty A2C, battery error, If a CPU error is detected,

corresponding error code (see Table 4.8.) is set in register (09008).

(a) Operation at detecting CPU error

the

CPU error flag (M9008) is set and

following:

and

operation check error.

the

CPU error

the

I

If a CPU processed in

1) Stop Sequence program operation stops if an error is detected.

At this time, the

terminal module are as indicated below.

Remole

A2C I/O module

Remote I/O module for

MINIS-3 link

Remote terminal module

I/O

Module

2) Continue Sequence program operation continues if an error is detected. If an operation error is detected while a sequence program is

executed, an instruction causing the error is skipped to continuously execute

error

the

is

detected.

following manner.

outputs

. EC Mode

(y) of

sequence

the

-

OFF Output ON OFF

-

the

program.

program

remote I/O module and remote

ON/OFF

OFF

Slelu.ofOutpul

ON/OFF

operation

(y)

state Is retained

is

•

4-42

4. A2CCPU

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

Diagnosis

Memory

error

CPU

error

I/O

Battery

Operation

Contents

Instruction

check

Parameter

check

No END

Instruction

instruction

executable

RAM

check

Operation

check

Watchdog END instruction not

executed Infinite

loop

I/O

module

Fuse

blown

Low battery voltage

check

error

code

setting

not

circuit

timer

execution

verify

* 1

*3

error

*1

Table

Error Code

(09008)

10

4.8

Self-diagnosis

Diagnosing

• At an

•

executionofeach

instruction

When

poweristurned

Timing

is reset.

11

12

• When A2C status is

STOP/PAUSE to RUN.

•

When

A2C

statusischanged

to

STOP/PAUSE

• When

following

RUN.

instructions are

changed

executed:

[CJj,

[SCJ],

[JMPj,

13

20

21

22 • At an execution of EN0 instruction

24

25

31

32

*2

70

50

[FOR-NEXT]

When

A2C

• STOP/PAUSE to RUN.

•

When

statusischanged

poweristurned

is reset.

•

When

poweristurned

is reset.

• At an

•

• At END

•

• At an execution of each

execution

Always

When ON,

When M9084 or M9094 is ON,

Always

instruction

M9084 or M9094 is

this

checkisnot

instruction

this

checkisnot

instruction

[CALL(P)],

of END

execution

List

individual

ON or

A2C

from

ON or

A2C

ON or A2C

instruction

turned

executed.

turned

executed.

individual

from

A2C

Status

Stop

%

Run

IX

RUN

Status Status

Flash

Run Lit

7

Run

~

MELSEC·A

ERROR

LED LED

Lit

-

Lit

IREMARKSI

(1) If

two

status are

can be

selected

(2) *1 •••

(3) *2

(4)

*3

Only I/O

...

Low

battery

For

...

The

operation

09011), For

Appendix

giveninthe

by the

a remote I/O

modules.

battery

flag

the

low

operation

error

the

operation

3.

setting

station

voltage

(M9006) or

battery

flag

check

flag

number

error

4-43

"A2C Status" and "RUN LED Status"

on a

peripheral

module

state can be

low

and

error can be

(M9010, M9011). By

of the

flag,

battery

low

step

see

using

battery

causing

device.

the AJ72P25/R25

detectedbyreading

latch

flag

(M9007).

latch

flag,

detectedbyreading

reading

the

operation

Appendix

2 and

columns,

data

link

modules

the

set/reset

see

Appendix

the

error

for

the

2.

the set/reset status of the

step

registers

can be

confirmed.

error

step

status

setting

can

state of the

(09010,

register, see

verify

low

4. A2CCPU MELSEC·A

(2) MINi-53 link line error

Error

Number

1

Cause

Initial setting error

MINI-53 link error indicates a communication errorcaused by breakage of the cable connecting a remote

moduletothe

A2C or by

turning

off

the power to a remote module. if a MiNI-53 link line erroroccurs, the M9061 (communication errorflag)

is set

and

the error cause number is stored in the D9061 (communica-

tion error cause storing register).

Error

Contents

• The

Initial

outside the allowable

setting

In this case, communlca-

tioniscontrolled

default settings.

• Broken

setting

range.

cable

data

by the

• Correct the initial settings.

• Follow

is

indicated below to execute communications according to the

corrected

•

Turn turnitback

• Reset

• Change the operation mode from

STOP 10 RUN.

•

Change

data

module

lit

ActiontoTake

anyofthe

initial

OFF

the

A2C.

the

cable

receive

for

which

operations

setting

data.

powertothe

ON.

connectedtothe

terminal

of the remote

the RUN LED is not

A2C

and

I

2

3

4

5 Receive

Disconnected

Faulty (Set

mode:

stop

at an

online

Transmission error

line

•

remote

error) Is

module

transmission

occurrence

underrun

overrun

error

of

•

• Loose

Power module

There with

stopped

The

of connectedtothe

During data

discontinued

• Before the

cable

supplytothe

turned

is a remote

which

communication

duetoa fault.

set

numberofstations

greater

received pleted, received.

stations

data

being

than

actually

transmission,

transmitted

processing

dataiscom-

the

halfway.

remote •

OFF

module

the

number

A2C.

Is

data

is •

•

Check

the

cable

data

receive

module

lit.

•

Check data station

which TurnONthe

remote

OFF.

• Read

is

storing station;

•

Change set as

•

Execute

anyofthe

•

of

•

• If

the

for

the

send

preceding

RUN LED is

module

09196to09199

registers) to

remove

the

communication

Turn

OFF

turnitback

Reselthe

Change

STOP 10 RUN.

the

same

A2C.

connection

terminal

which

the RUN LED is not

cable

connection

terminalofthe

the

not

power

supply

for

which

findafaulty

the

cause

total

numberofstations

initial

setting.

following

the

A2C.

the

error

operations:

powertothe

ON.

operation

reoccurs,

at the

of the remote

at the

remote

station

for

lit.

for

the

power

(faulty

station

of fault.

again

using

A2C

mode

from

replace

is

•

and

~

4-44

4.A2CCPU

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

I

MELSEC-A

(a) Initial setting error

1)

If an initial setting error occurs,

defaults (see below) to execute communications with a remote I/O module.

Item

Total

number

Number

Mode

2) After correcting the initial setting data, reset the A2C using RUN key switch or change the operation status from STOP to RUN.

modules and remote terminal modules

set initial setting data.

(b) Processing at an occurrence of disconnected line error

1) When a disconnected line error occurs, according processing at an occurrence of communication error.

of stations 64 stations

of remote terminal stations 0

Communications

to

the

communication

are

the

settings are reset to the

DefaUlt

Automatic online return supported

executed

with

the

accordingtothe

outputs

mode

and

are determined

the

remote

setting

the

I/O

newly

for

Line Error due to

Cable

I A2C

(

I

No.2

I

~

Item Output Processing at an Occurrence of Communication Error

Communication mode (M9069)

No.1

Automatic online return provided

No.2

The output state varies between the stations preceding and

succeeding the cable disconnection station.

Disconnection Line Error due to

I

No.2

Depends

~

-r-.

Output

OFF

• A2C I/O

• Remote

I

No.1

I

j

Cable

disconnection

OFF (M9069 : OFF)

module:

I/O

module for MINI-S3 :

OFF

(

I

~

Output by

(M9069 : ON)

Results of

are output

point

Remote

I A2C

~

r L Power OFF

sequence

on EC

mode

or power OFF remote

Station

Power OFF

No.1

I

j

program

program operation

Automatic online return not provided

Communication stop

No.1

No.2

No.1

No.2

• A2C I/O

• Remote I/O module for

• A2C I/O

• Remote I/O module for MINlwS3 : Depends on EC

module:

OFF

MINI-S3:Depends

OFF

4-45

on EC mode

mode

4.A2CCPU

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

(c) Processing at

1) If

communicationisstopped

outputsofthe

oA2C I/O

iO

Remote I/O

2)

The

output is restored by removing by resetting operation status of

(d) Processing at an

1) If

the stops. In below.

oA2C I/O

iO

Remote I/O

2) Communications out.

detection

module:

state as

transmission

this

module:

of faulty remote

due

to a

modules

module

the

A2C with

occurrenceoftransmission

case,

module

start

are as

OFF

for

obtainedbyrunning

the

A2C from STOPtoRUN.

underrun

outputs

OFF

for

when

follows:

MINI-53:

error

the

RUN key

error

of

MINI-53:

the

Depends

cause in

occurs,

the

Depends

following

MELSEC-A

module

faulty

the

switchorchanging

module

remote module,

on EC

sequence

the

underrun

data

on EC

operationiscarried

mode

faulty

station

error

communication

are as

mode

I

program

and

the

indicated

o

Turn

OFF

iO

Reset

iii)

Change

(e) Processing at an

1) If receive

ecuted

2) Communications out.

at an

oTurn OFF

iO

Reset

iiO

Change

(3) Remote terminal

The

remote terminal between be

of

the

is

storedin09180to09193.

the

A2C

executed

initial setting error, occurs,

correctly. If

the

powertothe

the

A2C.

the

operation

occurrence

underrun

occurrenceofdisconnected

the

A2C.

the

error

and

error

start

when

powertothe

operation

indicatesanerrorinwhich

a remote terminal

the

remote terminal error,

A2C

mode from STOPtoRUN.

of receive

occurs,

the

A2C

mode from STOPtoRUN.

the

and

turnitback

underrun

the

same

line

following

and

connectedtothe

M9060 is

operation

turnitback

set

ON.

error

processing

error

ON.

communications

withanexception

and

the

as ex-

is executed.

is carried

A2C

cannot

error

code

•

Remove

the

cause of

4-46

the

error

for

the

faulty

terminal

module.

4.A2CCPU

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

4.3.2

Fault detection with annunciator (F)

I

MELSEC-A

An annunciator (F) is used in a user's fault detection program. If the annunciator is turned ON, associated control differs from

executed when an internal relay (M) or latch relay (L) is turned ON.

(a) If

the

annunciator is turned ON by

special relay (M9009) is turned ON with the

the

sequence program, the

number

which is turned ON stored in the special register (09009).

(b) Registers

09124to09132

store

the

number

of annunciators which

have been turned ON and those annunciator numbers.

The annunciator number stored in 09125

and

thatin09009

same number. By monitoring M9009 and 09009 with an annunciator used in a fault

detection program. it is possible to check whether or

has occurred and contents of

-E;;~~;;I;;~--------····-----------······------------····--------

In

the

sequence program shown below, M9009 is turned ON when F5 is

the

error.

turned ON and "5· is stored in 09009.

the

control

of annunciator

are the

not

an error

-----~

[Fault detection program]

L.

f--------1

M9OO9

._

••• ••• •••

SET

M9009 09009 09124 09125

09126

09132

IOFF

O~5

o

~

O~5

0

~

(AnnunciatorONdetactlon)

ON I

(Number of annunciator

turned ON)

1

(Number of annunciators

turnad

ON)

(Annunciator numbers are stored In order that annunciators are turned

ON. (up to 8))

• __

••••••

(1) Turning ON an annunciator

An OUT instruction (OUT F[ ]) or SET instruction (SET F[ ]) is used to turn ON an annunciator.

(a) An annunciator can be turned ON/OFF by

turning

ON/OFF

conditions when an OUT instruction is used. The OUT instruction

is executed each scan. Contents in M9009, 09009, and

09124to09132

do not change if

the annunciator is turned OFF using an OUT instruction.

• __

••••••••••

the

J

input

4-47

4. A2CCPU

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

MELSEC·A

(b) A SET instruction is executed only at the leading edge of an input

condition to turn ON an annunciator. The annunciator stays ON when When a number of annunciators are used, a SET instruction rather

than an OUT instruction is recommended

(2) Turning OFF an annunciator

An RST instruction (RST F[ ]) or LEOR instruction is used to turn OFF an annunciator.

(a) To turn OFF (reset) the annunciatorwhich has been turned ON, use

an RST instruction (RST F[ ]).

(b) To turn OFF the annunciator which is stored in

use an LEOR instruction. An example program used to turn OFF an annunciator using an •

LEOR instruction is shown in Fig. 4.23.

the

input

condition is

to

reduce scan time.

09009

turned

and

off.

I

09125,

I

",'

~

~ar

~a~i,

,---

L~:-:-:-----:--....!------{J~'I~~

, SET I F255

ro.ollnput

reset input

I'

L.':j90,L2:.:.0

I I I > I D9124 I

r------1

- ID9124 I

*

M9020

POINTI

When an annunciator(F) is turned ON using an instruction other and SET instructions, the annunciator has the same function as an internal relay.

In

this

case, M9009 is not set; annunciator number is

09124 to 09132, either.

KO

is used as the timing clock; ON for 1 scan and

Fig.

~---{~~

DUTYI Kl I Kl I M9020

-c~~~D~O

DUTY I

4.23

ProgramtoTurn

KO

SET I

I Kl I09020

FO

LEDR

OFF

I--} I--

I--

•

I--

} Circunto rosotall

I--

OFF

Annunciator

Circuit to turn ON an

annunciator

Circuit to turn OFF the first one point

annunciators

Timing clock is turned

OFF

for the next 1 scan

not

which

areON

than

stored in 09009,

OUT

•

IREMARKI

Setting is possible whether the ERROR LED should be litor blink when an annunciator Is turned

ON. For details, see Section 4.2.8.

4-48

4. A2CCPU

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

MELSEC·A

I

4.4

Parameter

Setting

Range

Parameters are used to allocate user memory area or

the

use range of the

functions. The parameter data is stored in

the

first 3K bytes in the user memory area.

(1) Default values

Each parameter has a default value as indicated in Table

4.9.

It is not necessaryto change parameter data; programs can be run with default settings.

(2) Changing parameter setting

Parameter settings can be changed in

the

range as indicated in Table

4.9 to meet specific operation needs. A peripheral device should be

used to change the setting. See the Operation Manual

for

the

peripheral device to be used

for

the

procedure to set the parameter data.

IREMARKl

(1) Conversion of main sequence program capacity, file register capacity and comment

capacity from "steps" and "points" to "bytes" is

described

below.

Item

Main

sequence

File register capacity 1K points 2K bytes Comment

(2) When comment capacity is set with a peripheral device, 1K byte area is automatically taken

in

additiontothe

the set

Table

~t.

Item PU

Main sequence program capacity 6K steps

File register capacity

Comment

Status latch

capacity None

Memory Data File register Nerves (2 to BK bytes)

capacity 0/8 to 12K bytes

memory

program capacity 1K

capacity 64 points 1K byte

value

setting;

.

4.9

Default

Value

None

the

comment capacity

Parameter

1 to 8K steps

(1K step increments)

1 to 4K points (1K point increments)

o to

(64 point increments)

NolYes

Setting

Setting Range Ref.r to

4032

Setting

steps

Range

points *1

Unit.

displayed

Peripheral

0

0 0 0 0

-

NumberofByte.

2K bytes

is, therefore, 1K byte larger than

Device.

GPP HGP

0 0

PHP

0

4.4.1

4-49

4. A2CCPU

MELSEC·A

Table

~t.

Item PU GPP HGP PHP

Sampling

trace

Remote

terminal

setting

Memory

Device setting

Execution

Set time Intervals Set

Numberof samplings

Total number of slave stations

Protocol

First station number 0

Mode

capacity O/SKbytes

conditions

setting 0 not provided

4.9

Parameter

Default

Value

None

64 1 to 64

MINI

standard

Setting

Device

Each scan

oto

(128

MINI standard/no-protocol

1 to 61

Automatic

0:

provided

Automatic

1 :

Transmission stop at an

2:

occurrence of

error

time

1024

time

Range

Setting

number

intervals

times

increments)

(Continued)

Range

online

return

PerIpheral

0

-

0

-

.2

Devlc

0

-

••

0

.2

Refer

4.4.t

-

to

I

Latch

range

setting

Link

range

setting

I/O assignment

Link relay (B)

Timer

(T)

Counter

Data

Link register (W)

Numbercllink

Input

Output

Link relay (B)

Link register

(e)

reg ister

(0)

stations 1 to 64

(X)

(y)

~)

SO

to B3FF

(1 point increments)

TOto T255

(1 point increment)

LtOOO to 0 0 l2047

None

COto C255

(1 point increment)

DO

to 01023

(1 point increment)

WO

to W3FF

(t

point

Increment)

XO

to X1FF

(in units of 16 points)

YOtoY1FF

(in units of 16 points) SO

to B3FF

(in units of 16 points)

WO

to W3FF

(in units of 1 point)

X/YOto X/YlFF

(in units of 64 points)

-

0 4.2.2

0

•

0

-

4-50

4.A2CCPU

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

~I.

Item

I

Setting for internal relay (M), latch

relay (L)

Watchdog timer setting

Timer setting

Remote

Operation

mode

occurrence

error

and

RUN/PAUSE

stan

of

Table

step

relay (S) L2047

contact setting None

Fuse blown Continue I/O verify error Operation error Continue

Special

module

function check

4.9

error

Parameter

Default

Value

MOlo M999 Ll000to

NoneforS

200

msec

100 msec : 256 points

TOto T199 (8 points increments) for 100

10 msee :

T200 to T255 Must be consecutive numbers

Stop

Setting

M/LJSO102047

Must for M, L, and S

10 msec to

(10 msec increment)

msec timers, 10 msee timers,

and 100 msec retentive

timers.

XO

to Xl FF

(1

point

setting not possible for

PAUSE contact)

Range

Selling

be consecutive numbers

2000

each

Range

msec

for

RUN/PAUSE

(Continued)

Stop/continue 0 4.4.2

Stop

Peripheral Devlc

PU

GPP

HGP

0 0

0

0 0

0

0 0

0

-

0

0 0

0

MELSEC·A

•• Refer to

PHP

0

-

4.1.8

0

0 4.1.4

4.2.3

4.2.4

0

Operation

STOP

....

RUN display mode before the before/after execution of

Print title registration

Entry code registration None

state just Output of operation state

STOP

output

None

is operation

128 characters using all

MELSAP keys

Hexadecimal (0 to 9, A to F) Maximum 6 digits

0 0

-

0 0

0

4.4.3

0

4.4.4

0

4.4.5

0

4-51

4.A2CCPU

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

System Example

A2CCPU

P21/R21

'-

II

PW

AJ72

P25/R25

132

MELSEC-A

IREMARKSI

(1)

I/O

allocation of

AJ72P25/R25 data link module.

For an

I/O

AOJ2P25/R25 data link module, it is

allocation.

(2) For the number of used points, vacant area, MIL area (for communications between master

and local stations) of an A2CCPUP21/R21 and an I/Omodule connected to AOJ2P25/R25,

set these assuming that an arbitrary input modules and output modules are

vacant

slots are provided.

With the following system configuration, the used

is allocated to "4 modules x vacant 32 points. n

AXl1C>-AXllC

Master station

Vacant

points)

(16

Remote

AXl0 J

points)I(16

I/Ostatlon

A2CCPUP21/R2l

module connected to A2CCPUP21/R21 and a remote

AY51C'-AY13C

AY10

Vacant Vacant

points)

is possible only for the remote I/O station which

not

allowed to change the number of I/O points by I/O

I/O

points

(XIYO

Allocation Range

o

Number

10

points used by

7F

80

X/Y used

to

remote stations

SF

F

IF

of I/O

host station

by

I/O

station connected to

loadedorthat

to 7F) of the host station

I/O Allocalion

Slot

Module

No.

0

S32

1

S32

2

S32

3

S32

4 S32

5

X16

6

Y16

U88S

the

POINTI

(1) Do

not

set

the

following with a peripheral device. a) Link range b) Interruption counter c) I/O number assignment

1

(2)

*

Up to 4032 comments can be created with a peripheral device.

:

(3)

*2:

Setting is possible with a system FD later SW4GP-GPPA. Use a sequence program when a system FD of SW3GP-GPPA or

earlier version.

4-52

4.A2CCPU

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

4.4.1

Memory capacity setting

(1) The A2C provides 32K byte user memory area.

The following data can be stored in

this

user memory area.

(a) Parameters

(b)

Main programs

Sequence programs

Microcomputer programs (c) File registers (d) Comments (e) Status latch

(I) Sampling trace

Allocation of user memory area sets

the

areas where each data should

be stored.

MELSEC-A

Parameter area

TIC

setting value area

Main program area

Sampling trace

Status latch I Data area

area

File register area

Comment

area

IFile register

area

Fig. 4.24

4K

bytes

2 to

16K

(1toBK steps)

26

- [main program

(K

bytes)]Kbytes

User

Memory

bytes

area

Area

IUser memory area I

32K

Allocation

bytes

(2) The first 20K bytes in the user memory area is write protected.

If the memory protect switch will be set

ON

for

operation, file register

area and status latch area must not be within the write-protectarea (first

20K bytes).

I

Memory

protected

20K

bytes

j

12K

bytes

Fig. 4.25

4-53

Memory

Protect

Areas

4.A2CCPU

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

MELSEC-A

POINT

(1)

(2)

(3)

I

The

maximum

area,

status

program

The

main area, with

The ages.

Utility SWO·AD57P SWI

GP·AD57P

SWOC·PID SW1GHP·PID

SWOC·UTLp·FNO SWOGHp·UTLPC·FNO SWOC·UTLp·FNl SWOGHP·UTLPC·FNI SWOGHP·UTLP·FDI

areaof1K

areas

program

status

ROM

stored

microcomputer

Package

area

that

can

be

latch

area,

and

sampling

steps).

allocatedtoparameter

area

cannot

latch

area,orsampling

programs.

program

UaabllltyIn x • x

t>.

0 • Utility programs can be stored in

0

be

area

used

A2C

used

for

file

register

trace

areais26K

area, TIC

for

trace

can

store

• PIO operation status display is

setting

file

register

area

even

when

the

following

Rem.rk

Not

usable because no

AD57/AD58

A2C.

not

possible

can be connected to A2C.

the microcomputer program

(msximum

sequence program occupies 1K

steps.

can be connected to

becausenoAD57

14K

area,

bytes

value

area,

bytes)

(with

area,

the

utility

when

comment

main

and comment A2C

runs

pack-

area

a

I

For

detailsofutility

(4)

The

file A2Cisreset executed.

register

packages,

areaisnot

with

the

refertoeach

cleared

RUN key

when

switch,

utility

package

the

poweristurned

or

latch

clear

manual.

ON,

operation

the

is

4-54

4. A2CCPU

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

4.4.2

0peraIi0n

error

I/O module status

module

verify error

Operation mode at an occurrence of error

Error

Contents

An error in a sequence

program; a value outside

the range of 0 to 9999 Continue ON ON/OFF 50

(or 0 to 99999999) is

converted into BCD data.

The I/O module status

differentfrom the I/O

recognized when the

power

was turned ON is

detected. (removal/locating of a

32-point module,

Whether

occurrence

Table

etc}

4.10

Opera-

Stop

the

sequence program operation is

of an error is set.

A2C

Status

Default

RUN ERR

tlon LED LED tlon

Flash ON

at an

OccurrenceofError

Opera-

Continue!

Stop

cpu

Setting

RUN

ON/

Flash

.1

Status

LED

continued

ERR

LED

ONO'F

.-

MELSEC-A

or

stopped

Special

Relays

to be

Turned

ON

M9010

M9011 D9011

M9002

Dsta SolI-

Storing diagnosis

Special EnorNo.

Register (09008)

D9010

D9002 31

at an

Fuse blown error

Function

module error

Output

module

blown is

A FROM - TO instruction

is

executed

whereaspecial

moduleisnot

detected

for a

loaded

fuse

slot

function

.' .

.2.

.

The

Continue

Stop

RUN LED is Continue Stop The

ERROR LED is

details,

..... ON

see

ON

Flash ON

lit

or

Flash

litornot

Section

ON/OFF

flashes

4.2.8.

accordingtothe

lit

accordingtothe

setting

M9000

M9010 M9011 D9011

for

operation

for

ERROR LED

D9000 32

D9010

(continueorstop).

display

46

order.

For

4-55

4.A2CCPU

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

4.4.3

STOP-+RUN output mode

MELSEC-A

The status of outputs

position to the RUN position is set. ,

(1) Status before operation.

The output status

(2) Status after operation execution

Sequence program is executed one scan with

at

the

time

, _------------------------.-- __

Example: How the

a sample circuit shown below.

~XO'I

output

r--o<-

(Y)

at the time the RUN key switch is set from

just

before the operation is output.

the

A2C was in

status varies according to

the

STOP state;

~I

~

the

output

the

resulting status is output.

the

setting is explained using

status (OFF)

._----------_.~

the

STOP t

~

XO is turned ON during RUN ON

RUN ~ STOP

XO is

turned

OFF

STOP~RUN

-------------------.-

ON/OFF

Status before

Operation Operation Execution

OFF

ON OFF

_-----

status

of

Y20

Status

ON

OFF

------------_._--------..

after

•

·

•

·

•

_----~

4-56

4. A2CCPU

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

4.4.4

Entry code registration

MELSEC·A

The entry code is used to prohibit programs and comments in

from being read or rewritten with a peripheral device.

(1) Read/write from the PC CPU to which

In case the entry

and comments can not be read or written from peripheral device unless the entry device.

(2) Registration and cancellation of the entry code

A maximum of 6

set the entry code .

The entry code is registered or canceled with parameter setting.

POINT

In case an entry registered to the A2C, perform PC memory all clear by use of a peripheral device. communicate with a peripheral device.

I

If all memories of the A2C are

code

is registered, parameters, main/sub-programs

digits

in hexadecimal (0 to 9, A to F) can be used to

code

is forgotten or in case an unknown entry

the

code

not

entry

code

the

is entered to

cleared, the A2C cannot

the

PC CPU

is registered

PC CPU to a

the

peripheral

code

is

4.4.5

When PC memory all clear is executed, all of parameters and sequence programs stored in the A2C are cleared.

Printtitle registration

Print title is a comment such as machine name and program name which is printed with a sequence program.

The print title set by the GPP/PHP/HGP is stored in The maximum length of a print title is 128 characters.

the

A2C parameter area.

4-57

4.A2CCPU

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

4.5

Devices

4.5.1 Device

Device

Input

X

Y

Output

list

MELSEC·A

Devices indicate contacts, coils, timers, etc. used in

tion.

Table 4.11 shows the devices

and

their ranges to be used with

Devices indicated with an asterisk (*) can be set as appropriate by setting

the

ranges with parameters using a peripheral device.

For details of parameter setting, see Section

Table

Application

X, YOto 1FF (Number of X + Y = 512)

Range

4.11

Device

(Numberofpointe)

List

Provides

device, e.g. pushbutton,

digital switch.

Provides program control

e.g.

solenoid,

display.

PC

4.4.

command

magnetic

the

PC program opera- I

Explanat.lon

and

select

resultto

switch,

the

PC.

data

from

switch, limitswitch,

aignallight,

external

external device,

digital

•

Special

f--

M

Internal relay MOto 999 (1000)

•

Latch relay

• L

S Step relay

•

B Link relay BOto 3FF (1024) May be used as an internal relay if not set

F

Annunciator

100 msec 10 msec

T

*

100 msec retentive

C

Counter

-

Data register

0

Special

register

W

Link

relay M9000 to 9255 (256)

Ll000to2047

Can be used by setting

the

parameter (0)

FOto 255 (256)

timer

register WOto 3FF (1024)

TOto 199 (200) T200 to 255 (56) Can be used by setting

paramater. (0)

COto 255 (256)

DO

to 1023 (1024) Memory for storing PC data.

09000 to 9255 (256)

(1048)

Number

Ms + Ls + directly. Backed up S.

=2048

the

Predefined auxiliary relay

for

use in

the

PC.

Auxiliary relay in

directly.

of

Auxiliary

Used in e.g. as a relay

step-by-step process operation program.

Internal relay parameter. Used to detect a fault. When

RUN by a corresponding

Up timers available in 100 msec, 10 rnsec msec retentive types.

Up

type

Predefined

Data register

relayinthePCwhich

the

fault

counters

e.

thePCwhich

same manner as an Internal relay (M),

indicating

for

data link

detection program, stores a

number

availableinnormal

data

memory

for

use with

for

special purpose and

during

power failure.

the stage

which

switchedonduring

in special register D.

for

special purpose.

data

cannotbeoutput

number

cannot

be output.

for

and

interrupt

link.

of a

link

•

100

R File register

•

Can be used by setting the parameter. (0)

4-58

Used for by link parameters, data registers

data

link. In

the

ranger

file

registers can be used as

whichInnot

set

4. A2CCPU

I

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

Device

A

Accumulator

Z

Index register

V

Nesting

N

Pointer

P

Decimal

K

constant

Hexadecimal

H

constant

Table

Application

(2)

AO,

Al

Z (1) V (1)

NO

to 7 (8 levels)

PO

to 255 (256)

K-32768 to

K-2147483648 to 2147483647

(32-bit HOto FFFF (16-bit instruction) HO

to FFFFFFFF (32-bit instruction)

32767

instruction)

4.11

Range

(Numberofpoints)

(16-bit

Device

instruction)

IREMARKSI

The

step

relay

(8) may be

step

relay

comesinuseful

the

step

relay

canbeused

pendentlyofthe

internal

relay.

List

(Continued)

Data register for storing the operation results of

basic

and

Used to

(X,

Y, M,l,8, F, T, C, D, W, R, K, H, Pl.

Indicates Indicates

(CJ, SCJ, CALL, JMP).

Used to specify

pointer

numberofbit

application instruction

Usedtospecify instruction

usedinthe

when

specificallyinaccordance

same

mannerasthe

writingaprogram

application

modify

devices

the

nestingofmaster

the

destinationofthe

the

number,

values.

which

interrupt

device

the

internal has

with

MELSEC-A

Explanation

instructions.

controls.

branch

timer/counter

pointer

digits,

values.

basic

and

relay

two

functionorapplication,

the

functionorapplication,

set

number,

and

basic and

application

(M).

value,

For

Instruction

the

Instance,

Inde-

the

l.e.

4-59

4.A2CCPU

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

4.6 INSTRUCTIONS

Refer to the ACPU Programming Manual (Common Instructions) of each instruction.

4.6.1 Sequence Instructions

CI

...

lllcotlon

Contact instructions

Connection instructions

Symbol

--

LD

I

LDI

I

AND

I

ANI

I

OR

I

ORI

I

ANB

I

ORB

I

MPS

I

MAD

I

MPP

I

Table

I I I I I

I I I

4.12

Symbol

I

II

Jr Logical NOT operation start (NC contact operation start)

II

.r

I I

-,--l~-.--,--ll-

L .....

T

-If-

j}_.J

II

Jr

L..~I-...J

I I

~~

I

Sequence

I

r-

-If-y

-If-

MELSEC-A

for

Instructions

Contents ot Proc••slng

Logical

Logical product NOT (NC contact series connection)

logical

Logical add NOT (NC contact parallel connection)

ANOs

DRs logical blocks. (Parallel

Stores the

Reads the operation result from MPS.

Reads

result.

operation

product

add (NO

logical

blocks.

operation

the

operation result

start

(NO

contact

result.

(NO

contact

parallel connection)

(Series

from

operation

series

connection)

connectionofblocka)

connection

MPS and clears

8tart)

of blocks)

the

details I

OUT instructions

Shift

Instructions

Master

control

instructions

I I I

I I

I I I I

OUT

SET RST

PLS

PLF

SFT

SFTP

MC

MCR

Device

I

~

I

~

I

~

I

~

I

~

I

~

I

~

I

~

I

(D)

0-l

H

output Device set Device reset

Generates one-program cycle pulses on edgeofinput

Shifts

Master control start

Master control reset

signal.

device1bit

the

leading

trailing

41

4-60

4.A2CCPU

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

Classification

I

Program

branch

instructions

[FOR] to [NEX1]

Refresh

instructions

Termination

instructions end

Jump

Subroutine

call

Micro-

computer

program

call

Repetition

Unk

refresh

Link

refresh enable, disable

Program

Table

InatruclIon

Symbcl

CJ

I

SCJ

I

JMP

I

CALL

I ICALLP I

RET

I

SUB

I

SUBP

I

FOR

I

COM

I

EI

I

DI

I

FEND

I

END

I I

4.12

Sequence

Symbol

CJ

SCJ

JMP

CALL

CALLP I

RET

SUB

SUBP

FOR

FEND

-

I

I H

I

EI

DI

H

I

H

I

H

I

--j

I

--j

H

I

--j

I

-

H

I

H H H

I

H

I

H

I

H

I

p

••

p

••

p

••

p

••

p

••

n n n

Instructions

Jumpstop**

H

Jumpstop**

H

input condition is

Unconditionally

H H

Executes

condition is

H

Returns

H

sequence

H

Executes

H

Execute

lin"

times.

Executes

H

Enables

H

Disables

H

Always

H

terminate Always

return to

(Continued)

ContentsofProcessing

after

beginning

jumpstoP**.

the

subroutine

enabled.

execution

program.

the

microcomputer

the

program

link

refresh,

link

refresh.

link

refresh.

usedatthe

processing.

usedatthe

step

O.

the

input

enabled.

from

the

area

general

Valid

end of

conditionisenabled.

with

the

programatp**

subroutine

program

between

data

when

the

main

the

sequence

programtothe

specified

[FOR] and [NEXT]

processing.

M9053

routine

MELSEC·A

after

the

after

the

input

by n.

is on.

program

to

STOP

Other is

Stop

instructions

No

operation

STOP

I I

NOP

--j

I

-

H

Resets

output

stops

the

resumedbysetting

No

operation

For

program

after

sequence

erasureorspace

input

conditionisenabled,

program.

the

RUN

The

keyswitch

sequence

to RUN.

and

program

4-61

2. A2CCPU

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

4.6.2

Comparison instructions comparison

BasicInstructions

Cla.slflcatlon

te-bft

data

InsbuclIon

Symbol

LD-

I

AND~

I

OR-

I

LD<>

I I

AND<>

OR<>

I

LD>

I

AND>

I

OR>

I

LD<-

I

AND<=

OR<=

LD<

AND<

OR<

LD>-

AND>=

OR>-

I

Table

LD_

H

AND""

-1

OA-

Y

LD<>

H

-1

AND<>

OR<>

y

LO>

H

AND>

--!

OA>

Y

LO<

H

-l

ANO<-I(Sl)

OR<=

Y

LD<

H

AND<

--!

OA<

y

LD>z=

H

-lAND>""

Y

OA>.

4.13

Basic Instructions

Symbol

I(81) I

(82)~

~

I

(Sl)

I(82)

Continuity when (81) = (82) Non-continuity when (81)

f-J

~

1(81) j(S2)

l(sl)

§i}l

1(81)

1(82)f-

l~

I(S1)1(S2)~

S2

(SI)

II

I

I(82)

Continuity when (81)'"(82)

r-

Non-continuity when (81) = (82)

Continuity when (81) > (82) Non-continuity when (81) s (82)

f-

1

Continuity

f-

Non-continuity

~

Continuity when (81) < (82) Non-continuity when (81)

~

I

(Sl)

I(82)

Continuity when (81) >: (82) Non-continuity when (81) < (82)

fJ

Contents of Proce.slng

'"

(82)

when (81) S (82)

when (81) > (82)

>: (82)

MELSEC-A

I

4-62

•

2. A2CCPU

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

Classillcalion

Comparison

instructions

32-bit data

comparison

Table

Instruction

Symbcl

LDD

I

ANDD-

I

ORD-

I

LDD<>

I IANDD<>

ORD<>

I

LDD>

I

ANDD>

I

ORD>

I

LDD<=

I I

ANDD<~

ORD<-

I

LDD<

I

ANDD<

I

ORD<

I

LDD>-

I I

ANDD>-I

I

ORD>-

4.13

BasIc Instructions (ContInued)

Symbol

LOC_

I

H

I

-1

ANOO'I~

I

yaRD.

I

H

lOD<>

I

-1

ANOD<

I

yORD<>

I

~lDD>

I

-1

ANOD>

I

yaRD>

I

~DD<=

I

-1ANOD<=~

I

YORD<=I~

I

H

I

-1

ANOD< I

I

y ORD<

I

H

LOO>·

I

~

ANDO

-1

Y

ORO>.

I

(s'iI

~

> I

(81)

~

I

I(Sl)

~

lDD<

~

(Sl)

I

(S')

I

(Sl)I(S2>f-

> = 1(81) §i]--

I

(Sl)

(S2)

1(52)

(S')I(S2>f-

§i]--

I(S2)

Contents of Proce••lng

f-

Continuity when (81 + 1, Non-continuity when (81 +

Continuity when (81 + 1, 81)

r-

Non-continuity when (81 +

Continuity when (81 + Non-continuity when (81 +

Continuity when (81 + Non-continuity when (81 + 1, 81) > (82 + 1, 82)

Continuity when (81 + 1, 81) <

f-

Non-continuity when (81 + 1,

f-J

Continuity when (81 + Non-continuity when (81 +

f-J

81)~(82+1,82) 1,81)

..

(82 + 1, 82)

1,81)

= (82 +

1,81)>(82+1,82)

1,81)

s (82 + 1, 82)

1,81)S(82+1,82)

(82+1,82)

81)

" (82 + 1, 82)

1,81)"(82+1,82)

1,81)

< (82 +

MELSEC-A

(82 +

1,82)

4-63

2.A2CCPU

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

Claaailleatlon

BIN

16-blt

addition!

subtraction

Arithmetio BIN16-bit

operation Instructions

addnionl

subtraction

Bin

16-bit

addition!

subtraction

32-bit

BIN additlonl

subtraction

Table 4.13 Basic Instructions (Continued)

Symbol

--

+

+P

+

+P

-P

-

-P

D+

D+P

I

D+

D+P

D-

D-P

D-

D-P

*

*p

I

IP

D*

D*P

DI

I

DIP

I

---1

----Q (S1)

---1

I

---1

I

~

I

~

I

---1

I

---1

I

---1

I

~

I

---1

I

---1

I

---1

I

~

I

~

I

~(S2)I(D)H

I

~

I

~

I

~

I

~

I

~

I

~

I

Symbol

+

~

+P

~

IIS211

(D) H

+P I

(Sl)

IIS21

~

-

~

-P

~

0+

~

D+P

~

S11

0+

II

I(S2)

~

0-

~

o-P

~

o-l(Sl)l~

(D) + (5)

(51) + (52) ~ (D)

(D) - (5) ~ (D)

(51) - (52)~(D)

(D + 1, D) + (5 +I,5)~(D + 1, D)

(51 +

(D + 1,

(51 +

(51) x (52) ~ (D + 1, D)

(51) + (52)~Quotient (D), Remainder (D + 1)

(51 + + 1,D)

(51 + (D + 1, D), Remainder (D + 3, D + 2)

Contents of Processing

-e,

(D)

1,5)+(52+

D)-(5+

1,51)-(52

1,51)

x (52 + 1, 52) ~ (D + 3, D + 2, D

1,51)

+ (52 +

1, 52) ~ (D +

1,5)~(D+

+

1,52)~(D+

I,

52) ~ Quotient

l,D)

MELSEC·A

I

l,D)

1, D)

•

4-64

Mitsubishi Electric MELSEC-A, MELSEC-A A2CCPU, MELSEC-A A2CCPUP21, MELSEC-A A6DIN3C, MELSEC-A A2CCPUR21 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

CONTENTS

1. INTRODUCTION

2. SYSTEM CONFIGURATION

3. GENERAL SPECIFICATIONS

4. A2CCPU