西門子PLC培訓(xùn)教材

Key

FeaturesThe

HSCE2

is

a

multi-channel

module

whichhelps

reduce

systemcost

and

chassis/panel

size.

On

a

per

channel

basis,

the

HSCE2

is

17%

lessthan

the

HSCEfor2

channel

applications

and

59%

less

for

four

channel

applications.The

module

is

compatible

witha

variety

of

input

devices

and

signals

includingquadrature

encoder,

differential

line

driver,

single-ended

sourcing,

single-ended

open

collector,

5

Vdc,

12

Vdc,

24Vdc

signalsKey

functional

features

include:up

to1

MHzfrequency

response600

usec.

typical

thruput

to

BP

and

on-board

outputs24

bit

count

capabilityZ/gate

provides

hold,

store,

continue

count

capabilityAdditional

features

include:4physical

outputs

and

4soft

outputs

whichcan

be

tied

to

any

of

4countersElectronically

protected

outputs

withovercurrent

LED

indication

and

status

bitThe

HSCE2

is

compatible

with5/03

thru

5/05

CPUs

(class4

full

functionality)

and

5/01,

5/02,

and

1747-ASB

in

aremote

I/O

chassis

(class

1limited

functionality)西門子

PLC教程S7-200/S7-300主要內(nèi)容???––

S7-200

PLC硬件特點和系統(tǒng)配置編程特點網(wǎng)絡(luò)支持和特點S7-300

PLC系統(tǒng)硬件和網(wǎng)絡(luò)介紹和網(wǎng)絡(luò)組態(tài)?硬件組態(tài)編程–

西門子OPC配置–

鋁廠PLC技術(shù)特點和實例希望鋁業(yè)PLC網(wǎng)絡(luò)結(jié)構(gòu)華能鋁業(yè)PLC網(wǎng)絡(luò)結(jié)構(gòu)The

HSCE2

provides2

sets

of

+/-

A,B,Z

input

terminals

which

are

compatible

with5/12/24

Vdc

input

signals,

quadrature,

differential,

or

single-ended.

An

on-board

jumper

is

provided

for

each

channel

for

choosing

between

two

voltage

ranges,

4.2-12

volts

or10-30

volts.

Pull-upresistors

are

only

required

for

interfacing

to

open

collector

inputs.There

are

three

operating

modes

to

choose

fromproviding

two,

three,

orfour

channel

operation.

These

operating

modes

are

selected

withconfiguration/programming

blocks

that

are

sent

to

module.Freq.

Response

varies

depending

on

X

counting

mode.250khz

withX4

counting500khz

withX2

counting1MHzall

otherThe

gate/Z

reset

channel

provides

counter

reset

functionality

and

also

store/hold/continue

capabilitysimilar

to

1771-VHSC.

This

functionalityallows

the

count

value

to

be

stored

and

made

available

to

backplane

with

a

Z

input

off-on

transitionwhile

counting

continues.

More

on

thisfunctionality

later.西門子

PLC教程S7-200/S7-300?S7-200硬件特點和系統(tǒng)配置?s7-200系列可編程控制器是西門子PLC產(chǎn)品中的小型一組，即為Micro

PLC中央處理單元

CPU

221、CPU222、CPU224、CPU226擴展模塊The

following

count

configurations

are

available

with

the

HSCE2

and

are

selected

via

the

configuration

programming

blocks.Pulse/

External

Direction-B

input

controls

up/downcounting.Pulse

/

Internal

Direction-internal

bit

controls

up/down

counting.Up

and

Down

Pulses-A

pulses

count

up.

B

pulses

count

down.X1

Quadrature

Encoder-Counts

rising

edgeof

A

for

up

counts,

falling

edgeof

A

for

down

counts.

A/B

phase

angle

determines

up/downcounting.X2

Quadrature

Encoder-same

as

X1.

Rising

and

falling

edges

of

A

counted.X4

Quadrature

Encoder-same

as

X1.

Rising

and

falling

edges

of

Aand

B

counted.The

following

gate/reset

capabilityis

available

with

the

HSCE2.Soft

Preset.

The

counter

is

preset

when

the

matchingPreset

bit

in

the

output

image

table

is

set.Store/Continue.

The

count

value

is

stored

and

made

available

to

backplane

with

aZ

input

off-on

transition.

Counting

continues.Store/Hold/Resume.

This

mode

is

identical

to

the

Store/Continue

mode

except

that

the

counter

value

is

held

as

long

as

the

Z

input

is

active.Store/Preset/Hold/Resume.

Identical

operation

to

the

Store/Hold/Resume

mode

except

that

the

counter

is

set

to

its

programmed

Preset

Valueby

the

Z

input.Store/Preset/Start.

Identical

operation

to

the

Store/Continue

mode

except

that

the

counter

is

set

to

its

Preset

Value

by

the

Z

input.西門子

PLC教程S7-200/S7-300Max

counts:

+/-

8,388,607

(24

bit)

5/03

and

greater

CPUs+/-

32,767

(16

bit)

5/01,

5/02

CPUs,

and

1747-ASBCountdata

is

always

presented

in

integer

format.

For

values

over

32,768,

two

words

are

used

to

store

the

value.

A

compute

instruction

can

beused

for

converting

the

integer

words

to

floating

pt.

Rate

values

can

be

setup

as

either

integer

or

floating

point

data

whenconfiguring

the

moduleset

up

block.Counter

TypesRing

Counter-count

rolls

over

frommax

to

min.Linear

Counter-overflow

bit

set

above

max.,

below

min.Rate

MeasurementThe

HSCE2

performs

rate

calculationapprox.

every

16

msec.

and

provides

+/-.005%accuracy

when

using

floating

point

data

format.

Ratesbelow

1

Hz

are

not

supported

and

the

rate

period

(time

interval

for

countingpulses)

is

not

selectable.Note:

The

existing

HSCE

allows

the

user

to

choose

the

rate

period

but

provides

less

accuracy

at

+/-2Hz.Same

channel

can

be

used

for

countingorrate

calculationElapsed

time

between

counts

can

be

calculated

for

freq.

Between

1Hz

and

60HzRange

Control16

ranges

per

module

are

available

for

controlling

outputs

based

on

count

and/or

rate

data.Output

ControlAll

8

outputs(4

physical,

4soft)

can

be

controlled

by

any

or

all

of

the

counters.西門子

PLC教程S7-200/S7-300CounterOperating

ModesMode

1:

Only

Counters

1

and

2

are

available.Inputs

A1,

B1,

and

Z1

are

assigned

to

counter

1.Inputs

A2,

B2,

and

Z2

are

assigned

to

counter

2.Mode

2:

Only

Counters

1,

2,

and

3

are

available.

Inputs

A1,

B1,

andZ1

are

assigned

to

Counter

1.

Inputs

A2

andZ2

are

assigned

to

Counter

2.Input

B2

is

assigned

to

Counter

3.Mode

3:

All

four

counters

are

available.Inputs

A1

and

Z1

are

assigned

to

Counter

1.Inputs

A2

and

Z2

are

assigned

to

Counter

2.Input

B1

is

assigned

to

Counter

3.Input

B2

is

assigned

to

Counter

4.西門子

PLC教程S7-200/S7-300CPU

226Six

programming

blocks,

eight

words

each1.

Module

Setup-basic

configuration

and

range

allocation2.

Counter

Configuration-counter

type,

input

config.,

gate/preset,

rate

value

format,

rate

value

update

period3.

Min/Max

Count

Value-setsup

min,

max,

and

presets

values

for

each

counter.

Presets

can

be

adjusted

on

the

fly4.

Min/MaxRate

Value-sets

up

min

and

maxrates

values

for

each

counter.

Min/max

values

can

be

adjusted

on

the

fly5.

Programranges-can

be

adjusted

on

the

fly.

Sets

up

0-16

count

or

rate

ranges

for

automatic

control

of

outputs6.

Counter

Control-can

be

adjusted

on

the

fly,

data

examined

every

scan

if

block

enabled.

Provides

counter

enable/disable,soft

preset,

internaldirection,

output

ON

mask,

output

OFF

mask,

count/rate

selection

for

class

1,

range

enable/disableAll

programming

blocks

(except

counter

control)

are

transferred

to

module

via

programming

cycle

controlled

by

handshaking

bitsDebugmode

echoes

back

programming

block

data

for

review

and

troubleshooting西門子

PLC教程S7-200/S7-300擴展模塊注意！西門子

PLC教程S7-200/S7-300S7-200編程特點主機與設(shè)備連接時的注意事項編程的基本概念Operating

class

is

selected

with

programming

software

via

I/O

configurationClass

1

operationcompatible

with

all

SLC

500

CPUs

and

the

1747-ASBRIO

adapterprovides

8

input

words

for

status

and

8

output

words

for

configurationprovides

16

bit

(+/-32,768)

max.

count

capabilityClass

4

operationcompatible

with5/03,

5/04,

AND

5/05

CPUsprovides

23

input

words

for

status

and

8

output

words

for

configurationprovides

24

bit

(+/-8,388,607)

max.

count

capability西門子

PLC教程S7-200/S7-300編程的基本概念基本數(shù)據(jù)類型西門子

PLC教程S7-200/S7-300西門子

PLC教程S7-200/S7-300變量類型西門子

PLC教程S7-200/S7-300This

is

an

example

of

status

data

provided

for

the

HSCE2

whenconfigured

for

class

4

(23

in/8

out).Word

0Bit

0

thru

7-output

status

data.Bit

8,

9-indicates

operating

modeBit

11

(FB1)-e-fuse

statusBit12-(DEBUG)-this

bit

is

set

when

debug

mode

is

active.

In

debug

mode

the

input

data

file

echoes

back

programming

block

data

for

reviewand

troubleshooting.Bit

13

(PERR)-indicates

programming

error.Bit

14

(MFLT)-indicates

module

fault

has

occurred.Bit

15

(ACK)-makes0

to

1

transition

whenprogramming

data

has

been

received

by

module.Word

1-Counter

1

and

2

status

bytes:

indicates

whether

counter

is

running,

stopped,

over/under

flow

bit,

count

or

rate

data.Word

2-Counter

1count

value

(upper

4digits)Word

3-Counter

1count

value

(lower

3digits)Word

4

and5-Counter

1

rate

value

(can

be

configured

for

integerorfloating

pt.)Word

6-Counter

1

capture

value

(upper

4

digits)Word

7-Counter

1

capture

value

(lower

3digits)Word

8-Counter

2count

value

(upper

4digits)Word

9-Counter

2count

value

(lower

3digits)Word

10

and

11-Counter

2

rate

value

(can

be

configured

for

integer

orfloating

pt.)Word

12-Counter

2

capture

value

(upper

4

digits)Word

13-Counter

2

capture

value

(lower

3

digits)Word

14-Counter

3

and

4

status

bytes:

indicates

whether

counter

is

running,

stopped,

over/under

flow

bit,

count

or

rate

data.Word

15-Counter

3

count

value

(upper

4

digits)Word

16-Counter

3

count

value

(lower

3

digits)Word

17

and

18-Counter

3

rate

value

(can

be

configured

for

integer

orfloating

pt.)No

capture

values

available

for

counters

3

and4西門子

PLC教程S7-200/S7-300程序的組織塊西門子

PLC教程S7-200/S7-300中斷事件子程序調(diào)用西門子

PLC教程S7-200/S7-300程序舉例網(wǎng)絡(luò)特點S

7-200

PLC支持PPI、MPI、自由口通訊方式(例如：編寫用戶程序用做MODBUS

RTU子站)EM

277支持PROFIBUS-DP通訊西門子

PLC教程S7-200/S7-300西門子

PLC教程S7-200/S7-300西門子

PLC教程S7-200/S7-300西門子

PLC教程S7-200/S7-300工業(yè)以太網(wǎng)CP243-1通訊處理器連接工業(yè)以太網(wǎng)

10/100

Mbit/s

半工/全雙工通訊

RJ45接口TCP/IP使用Step

7-Micro/WIN通過工業(yè)以太網(wǎng)配置和遠程編程服務(wù)（上載、下載程序，監(jiān)視狀態(tài)）通過工業(yè)以太網(wǎng)連接其他的CPU(PUT,GET,Client/Server,8個連接)通過S

7-OPC在計算機上處理數(shù)據(jù)更換板卡，無需重新編程，配置。·應(yīng)用CP

243-1通訊處理器可以讓S

7-200連入以太網(wǎng)。使用Step

7-Micro/WIN通過工業(yè)以太網(wǎng)配置和遠程編程服務(wù)。S

7-200控制器通過以太網(wǎng)與其他S

7-200交換數(shù)據(jù)。使用S

7-OPC，PC應(yīng)用可以存取S

7-200的數(shù)據(jù)。這樣過程數(shù)據(jù)可以輕松被存儲和編輯?！ぴO(shè)計CP

243-1提供所有S

7-200設(shè)計的優(yōu)勢：緊湊的設(shè)計連接外部24

V直流電源的端子模塊LED狀態(tài)顯示可以卡裝在DIN導(dǎo)軌或直接安裝在墻上連接以太網(wǎng)的RJ45接口（10/100

Mbit/s全雙工/單工通訊，自適應(yīng)）·功能通過工業(yè)以太網(wǎng)，CP

243-1獨立操控數(shù)據(jù)。通訊基于TCP/IP。最多8個連接可以被操作。CP

243-1支持S

7-200與S

7-300/S

7-400/PC通訊。集成了S

7-OPC服務(wù)器的PC應(yīng)用程序可以被執(zhí)行CP

243-1允許Step

7

Micro/WIN通過以太網(wǎng)訪問S

7-200的程序?！づ渲肅P

243-1通過Step

7

Micro/WIN配置Hardware

OverviewSix

(6)

differential

input

channels+/-

(A1,

B1,

Z1,

A2,

B2,

Z2)LED

status

indication

for

each

ch.On-board

jumpers

to

select

5

Vdc

or

10-30

Vdc

operationFour

(4)

output

channels

with

single

com.LED

status

provides

logic

side

indicationOutputs

are

electronicallyprotected

with

LED

and

status

bit

indicationRUN

LED-

indicates

module

running,

communicating

with

BPFLT

LED-

indicates

hardware

problem,

flashes

if

outputs

experience

short

or

overcurrentconditionRemovable

Terminal

Block

(green)西門子

PLC教程S7-200/S7-300EM277模塊在PROFIBUS-DP網(wǎng)絡(luò)中的應(yīng)用西門子

PLC教程S7-200/S7-300西門子

PLC教程S7-200/S7-300Single-Ended

Encoder

Wiring

SchematicPull-up

resistors

are

required

when

open

collector

type

input

devices

are

used

with

the

HSCE2.

Shields

should

be

wired

at

one

end

only.

Recommended

connection

is

at

SLC

chassis

mounting

screw.Encoder

shield

connection

should

be

connected

only

if

it

is

isolated

from

the

motor

and

ground

to

prohibit

noise

fromreaching

the

HSCE2.

An

on-board

jumper

is

provided

for

each

channel

for

choosing

between

two

voltage

ranges,

4.2-12

voltsor10-30

volts.

Pull-up

resistors

areonly

required

for

interfacing

to

open

collector

inputs.西門子

PLC教程S7-200/S7-300Example

of

differential

wiring

schematic.Differential

signals

provide

best

noiseimmunity.Shields

should

be

wired

at

one

end

only.

Recommended

connection

is

at

SLC

chassis

mounting

screw.Encoder

shield

connection

should

be

connected

only

if

it

is

isolated

from

the

motor

and

ground

to

prohibit

noise

fromreaching

the

HSCE2.

An

on-board

jumper

is

provided

for

each

channel

for

choosing

between

two

voltage

ranges,

4.2-12

voltsor10-30

volts.

Pull-up

resistors

areonly

required

for

interfacing

to

open

collector

inputs.西門子

PLC教程S7-200/S7-300Single-Ended

Discrete

Input

Wiring

SchematicPull-up

resistors

are

required

when

open

collector

type

input

devices

are

used

with

the

HSCE2.

Shields

should

be

wired

at

one

end

only.

Recommended

connection

is

at

SLC

chassis

mounting

screw.An

on-board

jumper

is

provided

for

each

channel

for

choosing

between

two

voltage

ranges,

4.2-12

voltsor10-30

volts.

Pull-up

resistors

areonly

required

for

interfacing

to

open

collector

inputs.西門子

PLC教程S7-200/S7-300網(wǎng)絡(luò)連接例子西門子

PLC教程S7-200/S7-300組態(tài)西門子

PLC教程S7-200/S7-300西門子

PLC教程S7-200/S7-300西門子

PLC教程S7-200/S7-300西門子

PLC教程S7-200/S7-300西門子

PLC教程S7-200/S7-300西門子

PLC教程S7-200/S7-300S7-300系統(tǒng)硬件和網(wǎng)絡(luò)介紹西門子

PLC教程S7-200/S7-300西門子

PLC教程S7-200/S7-300西門子

PLC教程S7-200/S7-300西門子

PLC教程S7-200/S7-300西門子

PLC教程S7-200/S7-300西門子

PLC教程S7-200/S7-300S7-300網(wǎng)絡(luò)特點下一頁西門子

PLC教程S7-200/S7-300網(wǎng)絡(luò)詳細信息西門子

PLC教程S7-200/S7-300S7-300硬件組態(tài)西門子

PLC教程S7-200/S7-300西門子

PLC教程S7-200/S7-300西門子

PLC教程S7-200/S7-300西門子

PLC教程S7-200/S7-3005、雙擊SIMATIC

300\RACK-300,然后將Rail拖入到左邊空白處。生成空機架。西門子

PLC教程S7-200/S7-3006、雙擊PS-300，選中PS

307

2A，將其拖到機架RACK的第一個SLOT；西門子

PLC教程S7-200/S7-3007、雙擊CPU-300，雙擊CPU-315-2DP，雙擊6ES7

315-2AF03-0AB0，選中V1.2，將其拖到機架

RACK的第2個SLOT;一個組態(tài)PROFIBUS-DP的窗口將彈出，在Address中選擇分配你的DP地址，默認(rèn)為2；西門子

PLC教程S7-200/S7-3008、然后點擊SUBNET的NEW按鈕，生成一個PROFIBUS

NET的窗口將彈出。點中NETWORKSETTING頁面，你可以在這里設(shè)置PROFIBUS-DP的參數(shù)，包括速率、協(xié)議類型。西門子

PLC教程S7-200/S7-3009、點擊確定，即可生成一個PROFIBUS-DP網(wǎng)絡(luò)西門子

PLC教程S7-200/S7-30010、組態(tài)ET200M，點開PROFIBUS

DP\點開ET200M\選中IM153-1(注意,是6ES7

153-1AA03-0XB0);將其拖到左面PROFIBUS(1):DP

master

system(1)上;西門子

PLC教程S7-200/S7-30011、立即，會彈出IM153-1通訊卡設(shè)置畫面；DP地址可以改動，默認(rèn)值為1；點擊確定。西門子

PLC教程S7-200/S7-30012、點開IM153-1\再點開DI300\選中SM321

DI16*DC24V模塊,并將其拖入左下面的第4槽中，一個

DI模塊組態(tài)完畢，系統(tǒng)將自動為模塊的通道分配I/O地址（該處為I0.0~I1.7）。西門子

PLC教程S7-200/S7-30013按照上面步驟組態(tài)DO模塊（6ES7

322-1BH010AA0）。系統(tǒng)也將為其分配地址為（Q0.0~Q1.7）。西門子

PLC教程S7-200/S7-30014、按照上面的方法組態(tài)AI模擬量模塊（6ES7

331

7KF01-0AB0）；然后雙擊該模塊，彈出模塊屬性畫面，點擊Measuring欄，為每個通道定義信號類型，將0-1通道定義為兩線制4~20mA信號，2-3通道為內(nèi)部補償K型熱點偶信號（TI-C

K）。最后點擊OK，完成AI模塊組態(tài)。系統(tǒng)將為每個通道定義地址，該處第一通道是PIW256、PIW258。西門子

PLC教程S7-200/S7-30015、點擊，Save

and

Complice,存盤并編譯硬件組態(tài)，完成硬件組態(tài)工作。西門子

PLC教程S7-200/S7-30016、檢查組態(tài)，點擊STATION\Consistency

check,如果彈出NO

error窗口,則表示沒有錯誤產(chǎn)生!以上是一個完整的硬件組態(tài)過程！西門子

PLC教程S7-200/S7-300S7-300網(wǎng)絡(luò)組態(tài)目的：組態(tài)網(wǎng)絡(luò)，完成各個設(shè)備通訊1、在硬件組態(tài)的基礎(chǔ)上，切換到主畫面，并點擊按鈕。西門子

PLC教程S7-200/S7-3002、系統(tǒng)將彈出網(wǎng)絡(luò)組態(tài)畫面，然后點擊VIEW\Catalog將元件庫打開。西門子

PLC教程S7-200/S7-3003、將STATION下面的PG/PC拖入組態(tài)畫面中，然后雙擊PG/PC，彈出PG/PC組態(tài)畫面，然后點開

INTERFACES頁。點擊NEW，選擇MPI

interface,點OK鍵。西門子

PLC教程S7-200/S7-3004、然后彈出MPI組態(tài)窗口，將MPI地址設(shè)置為0，并將SUBNET中的MPI（1）選中，點擊確定。西門子

PLC教程S7-200/S7-3005、點開Assignment頁，選中MPI

INTERFACE（1）和PC

ADAPTER（MPI）；然后點擊ASSIGN，再點擊‘確定’按鈕。PG/PC組態(tài)完成。西門子

PLC教程S7-200/S7-3006、組態(tài)PC

STATION，將PC–STATION拖入組態(tài)畫面，將其雙擊，進入PC-STATION組態(tài)畫面，7、點開PC-STATION下的CP

PROFIBUS\cp5611將其拖入PC的第一槽位。彈出CP5611組態(tài)畫面，選中PROFIBUS（1），點擊確定。然后點擊SAVE

AND

COMPILE，將組態(tài)存盤和編譯。西門子

PLC教程S7-200/S7-300西門子

PLC教程S7-200/S7-3008、點擊STATION\Properties,打開

PC

STATION

屬性畫面，點開CONFIGURATION

頁。在中間的框中是PC

STATION

的組態(tài)文件的文件夾地址和名稱。我們可以用該文件配置PC機的CP5611網(wǎng)卡以上是一個完整的網(wǎng)絡(luò)組態(tài)過程！MPI網(wǎng)絡(luò)通訊：回顧PROFIBUS網(wǎng)絡(luò)通訊：回顧》22頁軟件演示工業(yè)以太網(wǎng)網(wǎng)絡(luò)通訊：回顧》22頁軟件演示西門子

PLC教程S7-200/S7-300S7-300

編程西門子

PLC教程S7-200/S7-300西門子

PLC教程S7-200/S7-300OB1FB1FC1OB100OB40DB1SFC1VAT1軟件演示西門子

PLC教程S7-200/S7-300OPC

SERVER配置OPC配置基本包括四個部分硬件組態(tài)網(wǎng)絡(luò)配置Configuration

Console配置Station

Configuration

Editor配置西門子

PLC教程S7-200/S7-300OPC

SERVER配置前提：安裝Simatic

Net

6.0、STEP

7

5.1、IE6.01新建一個S7工程，并創(chuàng)建一個S7-300

station和一個PC

station(命名為SIAMTIC

PCStation(1)1.1配置S7

300

station并創(chuàng)建Ethernet(1).(如果指定一個IP

address

if

you

do

not

useISO

protocal)西門子

PLC教程S7-200/S7-300配置PC

station.打開PC

station硬件配置窗口,在第一個槽中插入一個應(yīng)用.西門子

PLC教程S7-200/S7-3001.2.2在列表中選擇CP

card,如果你用的是第三方產(chǎn)品,(例如象3COM網(wǎng)卡),你可以選擇IEGeneral,記住它的位置在第三槽.西門子

PLC教程S7-200/S7-3001.2.3把PC

STATION連接到Ethernet(1).1.3.打開NetPro配置工具.西門子

PLC教程S7-200/S7-3001.3.1選擇S7

connection插入一個新的連接。西門子

PLC教程S7-200/S7-300雙擊連接，可以得到更詳細的信息！西門子

PLC教程S7-200/S7-3002、下載S7-300

station.3、配置網(wǎng)卡.3.1打開配置平臺,選擇你的IE

card,設(shè)置mode為Configuredmode,theindex應(yīng)該和硬件配置中所設(shè)一樣.Pls.see

1.2.2.西門子

PLC教程S7-200/S7-300))3.2設(shè)置access

points.CP_H1_1:

TCP/IP->(

Your

net

cardS7ONLINE:

PC

internal(local)3.3打開站配置編輯器.添加一個Application.Index

1.西門子

PLC教程S7-200/S7-300添加一個STATION名字，名字應(yīng)該和你的PC

STATION一致。4、下載你的PC

STATION.更新站配置編輯器的診斷信息。西門子

PLC教程S7-200/S7-300使用S7通訊服務(wù)的過程變量格式一般有三種:S7:[<connectionname>]DB<no>,{<type>}<address>{,<quantity>}S7:[<connectionname>]DI<no>,{<type>}<address>{,<quantity>}S7:[<connectionname>]<object>{<type>}<address>{,<quantity>}解釋如下：S7<connectionname>DBData

blockIdentifier

for

an

S7

variable

from

a

data

block（一個數(shù)據(jù)塊的S7變量標(biāo)示符）.DI<no><object><type>西門子

PLC教程S7-200/S7-300FormatIdentifierDescriptionOLE

Data

TypeVisual

Basic

TypeXBit

(bool).You

must

specify

the

bitnumber

(0

to

7).VT_BOOLBooleanBByte

(unsigned)VT_UI1ByteWWord

(unsigned)VT_UI2LongDDouble

word

(unsigned)VT_UI4DoubleCHARByte

(signed)VT_I1IntegerINTWord

(signed)VT_I2IntegerDINTDouble

word

(signed)VT_I4LongREALFloating

point

numberVT_R4SingleSTRINGString.You

must

specify

the

stringlength.VT_BSTRString[IOServer配置]名稱=OPCSERVERS7最大變量=2000[OpcClient]服務(wù)器名稱=OPC.SimaticNET功能個數(shù)=189//序號起始項名采集個數(shù)存放對象對象數(shù)目存放位置0

S7:[ZLJZ1]ib61DI82311

S7:[ZLJZ1]ib71DI82392

S7:[ZLJZ1]ib10

1

DI8

247S7:[ZLJZ1]IW%34

4

AIS7:[ZLJZ1]IW%14

8

AIS7:[ZLJZ1]MW32

1

AI1

451

491

5775

S7:[ZLJZ1]M,REAL381AI15876

S7:[ZLJZ1]MX101.01DI181577

S7:[ZLJZ1]MX100.21DI181678

S7:[ZLJZ2]IW%344

AI15979

S7:[ZLJZ2]IW%148

AI16399

S7:[ZLJZ5]M,REAL381AI1114100

S7:[ZLJZ5]MX101.01DI1823101

S7:[ZLJZ5]MX100.21DI1824105

S7:[ZLJZ6]M,REAL38102

S7:[ZLJZ6]IW%34

4

AI

1

115103

S7:[ZLJZ6]IW%14

8

AI

1

119104

S7:[ZLJZ6]MW32

1

AI

1

1271

AI

1128106

S7:[ZLJZ6]MX101.01DI1825107

S7:[ZLJZ6]MX100.21DI1826108

S7:[ZTS7318]Ib0

1

DI109

S7:[ZTS7318]IW%2

6

AI8

8071

129110

S7:[ZTS7318]db3,real128

1

AI111

S7:[ZTS7318]mb70

1

DI

2

8271

135遙控個數(shù)=185//序號輸出地址遙控對象序號0

S7:[ZLJZ1]MX100.2

401

S7:[ZLJZ1]MX101.0412

S7:[ZLJZ1]MX100.142遙調(diào)個數(shù)=8//序號輸出地址遙調(diào)對象序號0

S7:[ZTS7318]db3,real1280S7:[ZLJZ1]M,REAL38S7:[ZLJZ2]M,REAL38127

S7:[ZTS7318]db3,real1327鋁廠PLC技術(shù)特點和實例一、閉環(huán)控制

閉環(huán)控制是以實現(xiàn)穩(wěn)流控制為目的。穩(wěn)流控制是通過調(diào)節(jié)整流機組的飽和電抗器和有載開關(guān)使得在電解槽負荷增加、網(wǎng)壓波動和產(chǎn)生陽極效應(yīng)時能使設(shè)定值電流與測量值電流一致。

閉環(huán)控制按照現(xiàn)在的說法，一般分為大閉環(huán)控制和小閉環(huán)控制。（或者叫N+1控制，N是整流機組的數(shù)量（每臺機組配置一個小閉環(huán)控制），1是大閉環(huán)控制總調(diào)PLC）

大閉環(huán)控制由總調(diào)PLC完成，綜合所有整流機組的工藝條件和陽極工況以實現(xiàn)穩(wěn)流控制，一般分為總調(diào)控制和分調(diào)控制。

小閉環(huán)控制一般為就地控制，調(diào)節(jié)飽和電抗器，平衡A、B柜直流輸出，采集整流柜本體信號，以及整流柜的本體保護。西門子

PLC教程S7-200/S7-300閉環(huán)控制從工業(yè)控制的角度可以理解為連續(xù)控制和邏輯控制。

連續(xù)控制是對飽和電抗器的控制（包括控制繞組和偏移繞組），為4-20mA電流信號或1-5V電壓信號輸出，由PID調(diào)節(jié)器實現(xiàn)（比例積分微分控制）。

邏輯控制是綜合判斷在連續(xù)控制調(diào)節(jié)飽和電抗器無法滿足穩(wěn)流控制要求時，如何升降有載開關(guān)。同時包括檔位閉鎖控制、最大需量控制、恒安時控制、切除機組控制、開啟機組控制等。PID調(diào)節(jié)器—設(shè)定值反饋值輸出1.

鋁廠自動化控制流程鋁廠自動化系統(tǒng)的控制難點在于穩(wěn)流控制和有載開關(guān)自動控制。穩(wěn)流控制流程如圖：總調(diào)PID調(diào)節(jié)器系列電流測量值1#機組直流電(流整流柜交流側(cè)電流)小閉環(huán) 設(shè)定值機組小閉環(huán)PID調(diào)節(jié)器穩(wěn)流設(shè)定值串級控制示意圖調(diào)節(jié)1副#機回組路控制繞組主回路大閉環(huán)手動自動單調(diào)聯(lián)調(diào)二、升降有載開關(guān)

設(shè)置大閉環(huán)手/自動升降有載開關(guān)選擇（由后臺軟壓板實現(xiàn)），當(dāng)選擇自動升降有載開