Idoc.vn Luan Van Tot Nghiep Mo Hinh Giam Sat Va Dieu Khien Dong Co Buoc

7/30/2019 Idoc.vn Luan Van Tot Nghiep Mo Hinh Giam Sat Va Dieu Khien Dong Co Buoc

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Lun Vn Tt Nghip Trang: 1

TRNG KHOA

----- -----

BO CO TT NGHIP

ti:M hnh gim st v iu khin ng c bc


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MC LC

CHNG 1: TNG QUAN V TI.......31. t vn :....................................................3CHNG 2: C S L LUN.....................51. Gii thiu s lc v PLC S7-200..............51.1 Gii thiu tng qut v h PLC S7...........54. Gii thiu tng quan v WINCC..............304.1 To mt n mi trong WinCC ........30

CHNG 3: M HNH IU KHINNG C BC..........................................52

1. Mch iu khin ng c bc n sudy:..................................................................52

CHNG 4:KT LUN V HNGPHT TRIN TI.................................1021. Kt lun.....................................................102


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CHNG 1: TNG QUAN V TI

1. t vn :Trong iu khin chuyn ng k thut s, ng c bc l mt c cu chp hnhc bit hu hiu bi n c th thc hin trung thnh cc lnh a ra di dng s.cc loi ng c bc c s dng ngy cng rng ri trong cc h thng t ng,iu khin xa v nhiu thit b in t khc, ni bt l trong cc lnh vc sau: iukhin robot, iu khin lp trnh trong cc thit b gia cng, iu khin my dp giydecal, v,v, V cng trong iu khin chnh xc ngi ta cn nhng ng cc th t c chnh xc cao theo ng yu cu c v lc v tc . ng cbc l mt trong nhng s la chn tt p ng c nhng yu cu trn vi

kh nng chuyn ng chnh xc n tng bc thm ch l vi bc. c bit viciu khin motor bc c ng dng ph bin trong x nghip, nh my phc vtrong cng vic sn xut hin nay.

Bn cnh vic pht trin cc phn mm ng dng cng ngy mt cao hn, cbit vi WinCC ( Windows Control Center), y l phn mm tch hp giao dinngi v my IHMI (Integrated Human Machine Interface) u tin cho php kthp phn mm iu khin vi qu trnh t ng ha, l phn mm ng dng gim st, iu khin v thu thp d liu ca mt h thng t ng ha qu trnh snxut.Vi WinCC, ngi s dng c th to ra mt giao din iu khin gip quanst mi hot ng ca qu trnh t ng ha mt cch d dng.

Vic s dng nhng b iu khin lp trnh PLC ring l khng p ng yu cuiu khin ca mt h thng Scada, cn phi kt hp thm cc b hin th HMI(Human Machine Interface) giao din ngi v my.

Phn mm ny c th trao i d liu trc tip vi nhiu loi PLC ca cc hngkhc nhau nh Siemens, Mtubishi, Allen Bradley,v.v,nhng n c bit truynthng rt tt vi PLC ca hng Siemens.Trong lnh vc t ng ha trong cngnghip, WinCC l mt trong nhng phn mm HMI chuyn dng ca hng Siemens qun l thu thp d liu v iu khin qu trnh cng nghip, chng trnh dng

iu hnh cc nhim v ca mn hnh hin th v h thng iu khin trong tng ha sn xut.

WinCC c ci t trn my tnh v giao tip v PLC thng qua cngCOM1 hoc COM2 (chun RS- 232) ca my tnh. Do , cn phi c mt bchuyn i t chun RS-232 sang chun RS-485 ca PLC.

WinCC cn c c tnh m. N c th s dng mt cch d dng vi ccphn mm chun v phn mm ngi s dng, to nn giao din ngi-my p


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Lun Vn Tt Nghip Trang: 4ng nhu cu thc t mt cch chnh xc. Nhng nh cung cp c th pht trin ngdng ca h thng qua giao din m ca WinCC nh mt nn tng m rng hthng.

Ngoi kh nng thch ng cho vic xy dng cc h thng c qui m ln nhkhc nhau, WinCC cn c th d dng tch hp vi nhng ng dng c qui m

ton cng ty nh vic tch hp vi nhng h thng cao cp nhMES(Manufacturing Excution System- H thng qun l vic thc hin snxut)v ERP(Enterprise Resource Planning).WinCC cng c th s dng trn cs qui m ton cu nh h thng tr gip ca Siemens c mt trn ton th gii.

i vi S7-300 th vic kt ni vi WinCC mt cch d dng nh s tch hp sn.Trong khi thc t cc PLC S7-200 vn cn s dng nhiu m WinCC th khngtch hp sn. V vy vic kt ni gia S7-200 v WinCC phi thng qua phnmm S7-200 PC Access lin kt. y cng l mt phn c trnh by trongbi lun vn ny.

ti m ti thc hin l mt v d thc tin: M hnh gim st v iukhin ng c bc. Ni dung ti bao gm cc vn sau:

Tm hiu v S7-200 (CPU 226CN) lp trnh. Tm hiu v WinCC, PC Access. Thit k c m hnh gim st v iu khin ng c bc dng

PLC S7-200 thc hin ct giy theo mt chiu di nh sn v cs gim st ca my tnh.

2. Gii hn ti:

Vi thi gian gn by tun thc hin ti, cng nh trnh chuyn mn c hnnn ti ny ch lm: Tm hiu v cc b iu khin ng c bc v s dngS7-200 (CPU 226CN) lp trnh, tm hiu v PC Access, HMI v dng WinCC gim st m hnh ct giy t ng. Rt mong nhn c s gp kin qu thyc v cc bn sinh vin hon thin hn v v ti ny.


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CHNG 2: C S L LUN

1. Gii thiu s lc v PLC S7-200.

1.1 Gii thiu tng qut v h PLC S7.

H PLC S7 l mt h PLC mnh, tc x l cao, kh nng qun l bnh tt, kt ni mng cng nghip.

Hin nay h PLC S7 gm c S7-200, S7-300, S7-400. Mi mt th h PLC li c nhiu chng loi CPU khc nhau. i vi PLC S7, c th thc hin cc php ton lo6gic, m, nh thi, cc

thc ton phc tp v thc hin truyn thng vi cc thit b khc.Mt s thng s k thut ca S7-200 CPU22X.

1.2 Cu hnh vo ra ca S7-200 CPU226CN


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1.3 Nhng khi nim c s ca PLC S7-2001.3.1 khi nim vng qut ca PLC


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a) c d liu u vo: c cc trng thi vt l ( Input ) vo b m o ( IR Input Register ).

b) Thc thi chng trnh: CPU c d liu t IR, thc hin chng trnhphn mm, kt qu dc lu li cc vng nh thch hp v b m o ura ( OR Output Register ).


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c) X l cc yu cu truyn thng ( Option ) : nu c yu cu truyn thngx l ngt.

d) T chun on li: CPU kim tra li ca h iu hnh trong Rom, ccvng nh v cc trng thi lm vic ca cc module m rng.

e) Xut kt qu u ra : CPU c kt qu t OR, v xut kt qu ra cccng vt l.

Mt s lu : u vo s :

+ Nu khng dng tnh nng I ( Immediately ) th d liu u voc cp nht ti b m o.

+ Nu dng tnh nng ny, chng trnh b qua b m o. u vo tng t :

+ Nu b qua tnh nng lc tng t, th chng trnh s ly trc tipd liu ti cng vt l.

+ Nu dng tnh nng ny, th chng trnh s c cc gi tr c luli.

M t vng qut :+ Mi mt vng qut c bn ca PLC mt t 3ms 10ms, ty thuc

vo s lng cng nh kiu lnh vit trong chng trnh.

1/Thi cp nht b m uvo.2/ Thi gian thc thi chng trnh.

3/ Thi gian xut kt qu ra cngvt l.

1.3.2 Phn chia vng nh trong S7-200 :

3

Thay i mc logicu vo


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Lun Vn Tt Nghip Trang: 9a. Vng m o u vo ( I ; I0.0- I15.7 ):

CPU s truy cp cc u vo vt l ti u mi chu k qut v ghi d liuvo b m o.

nh dng truy cp :

b. Vng m o u ra ( Q ; Q0.0-Q15.7 ): Cui mi chu k qut, CPU S7-200 s truy cp d liu t b m o xut

ra cc u ra vt l. nh dng truy cp :

c. Vng nh thi gian ( T ; T0-T255): Vng nh ny dng cho cc b thi gian ca S7-200. i vi mt b Timer

c hai hnh thc truy cp vng nh, truy cp theo Timer bit hoc CurrentValue.

nh dng truy cp :

Ty theo lnh s dng trong chng trnh m cho php ta truy cp theoTimer bit hay Current value.

d. Vng nh b m ( C ; C0-C255 ): Vng nh ny dng cho cc b m ca S7-200. i vi mt b Counter

c hai hnh thc truy cp vng nh, truy cp theo Counter bit hoc Current

Value. nh dng truy cp :


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Ty theo lnh s dng trong chng trnh m cho php ta truy cp theoCounter bit hay Current Value.

e. Vng nh c bit ( SM ) : Vng nh ny cung cp cc bit truyn thng gia CPU v chng trnh.

Cc bit ny c dng la chn v iu khin mt s chc nng cbit ca CPU S7-200. nh dng truy cp :

1.3.3 Truy cp d liu gin tip thng qua con tr:

a. Con tr ( Pointer ) : l mt nh c kch thc mt t kp ( double word )cha a ch ca mt nh khc. Khi ta truy cp vo nh ca con tr c nghata ang c a ch ca nh mong mun. C 3 vng nh trong S7-200 cho php dng lm con tr : V, L, AC1, AC2,

AC3. S7-200 cho php dng con tr truy cp cc a ch nh sau: I, Q, V, M,

S, T ( current value ) , C ( current value ). S7-200 khng cho php dng con tr truy cp cc a ch nh AL, AQ,

HC, SM, L v a ch di dng bit. Khi s dng cch truy cp d liu thng qua con tr, trong S7-200 s dng

2 k t & v *.+ K t &: Dng khi to con tr.

- V d : MOVD & VB200, AC1.- Chuyn a ch VB200 ( khng chuyn ni dung ) vo thanh ghi

AC1. Thanh ghi AC1 tr thnh con tr.+ K t * : Dng truy cp ni dung nh c a ch cha trong con tr.

- V d : MOVB *AC1, VB200.- Chuyn ni dung nh c a ch lu trong con tr AC1 vo nh

c a ch VB200.V d :


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b. Lu : thay i ni dung con tr : S dng lnh tng +D ( Tng t kp, do con tr l mt thanh ghi 32 bit).

Nu truy cp theo byte : Tng ni dung con tr ln 1. Nu truy cp theo word : Tng ni dung con tr ln 2.

Nu truy cp theo double word: Tng ni dung con tr ln 4.

1.4 La chn ngn ng lp trnh:

Trong S7-200 cho php la chn 3 ngn ng lp trnh : Ngn ng LADDER ( LAD ).

Ngn ng STL. Ngn ng FBD.

Ba ngn ng ny v mt hnh thc c th chuyn i ln cho nhau. Vic la

chn ngn ng lp trnh l ty theo thi quen, s thch cng nh kinh nghim cangi s dng.

1.4.1 Ngn ng LADDER :

L ngn ng lp trnh ha da trn c s s trang b in, vic ktni lp trnh ha ging vi vic thit lp cc s relay- contactor. Mtchng trnh ngun vit bng LAD c t chc thnh cc network, minetwork thc hin mt cng vic nh.

S7-200 c chng trnh t trn xung di, t tri qua phi, sau lp li vng qut tip theo.

V d ngn ng LADDER:


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1.4.2 Ngn ng STL :

L ngn ng lp trnh di dng Text gn ging vi lp trnh hp ng trong

vi iu khin v vi x l, l mt ngn ng mnh cho php to ra mtchng trnh m LAD v FBD rt kh to ra. Mt chng trnh vit didng STL c t chc thnh cc network, mi network thc hin mtcng vic nh.

S7-200 c chng trnh t trn xung di, sau lp li vng qut tiptheo.

V d ngn ng STL:

1.4.3 Ngn ng FBD :

L ngn ng lp trnh ha da trn c s kt ni cc khi hm, s dngcc k hiu logic ging vi i s boolean. Cc hm ton hc phc tpcng c th hin di dng khi vi cc u vo u ra thch hp.

S7-200 c chng trnh t trn xung di, t tri qua phi, sau lp li vng qut tip theo.


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Lun Vn Tt Nghip Trang: 13V d ngn ng FBD :

2. Gii thiu v S7-200 PC ACCESS

S7-200 PC ACCESS c dng trong lun vn ny vi mc ch kt nigia S7-200 v Wincc, lm c iu ny ta cn tm hiu v cch ci t v sdng ca n nh th no .

2.1. Ci c S7-200 PC Access

Cc bc thc hin:

Trn thanh Taskbar, chn All Programs > Run.


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Hp thoi Run xut hin, chn nt Browse.

Hp thoi Browse xut hin, chn ng dn n chng trnh ci t. Chn fileSetup, ri nhp Open m.


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Hp thoi Run xut hin, nhp OK.

Hp thoi Choose Setup Language xut hin, chn ngn ng English, ri nhpOK.

Vt sng xut hin lan dn qua phi trn hp thoi cho bit chng trng ang ci

t.


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Hp thoi InstallShield Wizard xut hin, nhp Next tip tc ci t.

Hp thoi k tip xut hin, chn Yes.

Hp thoi hin th ng dn ci t chng trnh. Nu mun thay i ng dnchn nt Browse. y ta gi nguyn ng dn mc nh, Nhp Next.


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Vt sng xut hin lan dn t tri sang phi cho bit qu trnh ci t ang tinhnh

Bng SIMATIC Device Drivers Setup xut hin.

Sau khi cc vt sng chy xong, hp thoi Set PG/PC Interface xut hin, nhpOK.


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Hp thoi InstallShield Wizard xut hin, nhp Finish kt thc qu trnh ci t.

2.2 Cch s dng S7-200 PC Access :

2.2.1 To s kt ni cho mt PLC :

Trong S7-200 PC Access vi tr gip OPC bao gm 3 bin i tng :- PLC- Folder ( khng cn thit)- Item

Khi to mt d n mi, vic kt ni PLC phi c lm trc vi hai bc sau

a. Thit lp cu hnh giao tip :

Khi ng S7-200 PC Access, t thanh Taskbar chn Start > Simatic > S7-200PC Access.M mt d n mi, chn File > New, ca s Unititled- S7-200 PC Access xuthin.


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Nhp phi vo Microwin chn PG/PC Interface..

Ca s Set PG/PC Interface xut hin .

Nhp chn PC/PPI cable(PPI), ri chn Properties, xut hin hp thoi

Properties PC/PPI cable.


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Chn a ch v tc truyn cho S7-200 PC Access , thng thng mcnh nh trn, mc Local connection chn cng COM cn kt ni vi PLC.Sau nhn Ok chp nhn.

b. Thit lp cu hnh mi cho mt PLC :

Trn ca s lm vic ca S7-200 PC Access, nhp phi Microwin chn NewPLC.


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Lun Vn Tt Nghip Trang: 21Ca s PLC Properties xut hin, mc Name nhp vo tn PLC cn lm vic, y chn tn PLC1.

mc Netwok Address cn phi chn con s ph hp vi a ch cu hnhca PLC trong d n Step 7 Micro/Win, thng thng i vi S7-200 th mcnh vi s 2.

2.2.2 To mc Item :

Nhp phi vo mc PLC1 chn New, ri chn item.

Hp thoi Item properties xut hin, mc Name nhp tn theo d n to S7-200, mc Address nhp a ch vng nh, ng vo ng ra ph hp vi dn m ta thit lp trn S7-200, sau nhp ok chp nhn. C th s ctrnh by chng 4.


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Lun Vn Tt Nghip Trang: 22Sau khi nhn Ok ta c kt qu sau, tng t ta to thm nhiu Item khc.

Sau nhp chut chn cc item va to ri ko r th vo vng Test Client .

2.2.3Chy th, kim tra :

Nhp chn Status > Start test Client.

Nu thy ct Qualty chuyn t Bad sang Good l vic kt ni thnh cng.


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3. Khi qut v ng c bc:Trong h thng t ng v trong my tnh in t ngy cng s dng rng

ri h thng truyn ng ri rc.

Cc h thng truyn ng ri rc ny thc hin nh loi ng c chp hnhc bit gi l ng c bc. ng c bc thng l ng c ng b dng ph

bin cc tn hiu iu khin d dng cc xung in p thnh cc chuyn nggc quay hoc chuyn ng ca rotor v c kh nng c nh rotor vo nhng vtr cn thit.

ng c bc lm vic c nh c b chuyn mch in t, a tnhiu iu khin vo cc cun dy stator, theo mt th t v mt tn s nht nh.Tng s gc quay ca rotor tng ng vi s ln chuyn mch, cng nh chiuquay v tc quay ca rotor, ph thuc vo th t chuyn v tn s chuyn i.

3.1 Phn loi v cu to

ng c bc c bn c chia lm 3 loi: ng c bc nam chm vnh cu.

ng c bc bin tr t

ng c bc lai

ng c bc nam chm vnh cu c bn gm 3 lai: ng c bc n cc

ng c bc lng cc

ng c bc nhiu pha

3.2 ng c bc nam chm vnh cu3.2.1 ng c bc n cc:


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Lun Vn Tt Nghip Trang: 24STEP loi n cc bao gm 2 cun dy, mi cun c ni ra ngoi gia

cun, v vy thng thng trn thc t y l loi ng c 5 hoc 6 dy ra, STEPloi ny c iu khin bng cch cho u dy chung ni ln ngun v tng udy cn li ln lt c ni mass .

ong c bc n cc co 5 ngo ra: trong o co 4au day coil1coil4 dung e ieu khien con au day

common dung e noi nguon cung cap. K hieu cac mauday theo qui nh nh hnh di :

ong c bc n cc co 6 ngo ra: trong o co 4au day coil1coil4 dung e ieu khien, 2 au day conlai chnh la day common c tach ra lam 2, khi dungphai noi ca 2 vi nguon cung cap. Hai day common nayco cung mau.

3.2.2 ng c bc lng cc:


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Lun Vn Tt Nghip Trang: 25ng c loi lng cc (Bipolar), thng c 4 u ra. V cu to n gin hnnhng kh cho iu khin v phi o chiu dng in qua cun dy a,b.

3.2.3 ng c bc nhiu pha:

Mot loai ong c bc nam cham vnh cu t thongdung hn o la ong c bc co tat ca cac cuon dayc noi tiep vi nhau thanh vong kn va gia moi capday co mot iem gia goi la ong c bc nhieu phahay a cc. Kieu thong dung nhat la kieu 3 pha va 5 pha

3.3 ng c bc lai:

STEP lai l loi kt hp gia STEP t thng thay i v loi nam chmvnh cu. Roto cho ng c STEP lai c nhiu rng , ging nh loi t thng thayi, cha li t ha trn ng tm xoay quanh trc ca n. Rng ca rotor to


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Lun Vn Tt Nghip Trang: 26ng dn gip nh hng cho t thng u tin vo trong l khng kh. STEP laic li ging nh STEP n cc v lng cc.

3.4 ng c bin t tr:

Thng thng c ba hoc bn cun dy u chung mt u. u chung cni vi ngun dng, cc u cn li ln lt cho thng vi t quay rotor.

Trn hnh v, rotor c 4 rng v stator c 6 cc. Mi cun dy s c qun

trn hai cc i nhau. V vy, gi s, khi cp in cho cc 1 (stator), rotor s quaycc gn nht (X) rng thng vi cc 1. Ct in cun s 1, tip tc cp in chocun 2, rotor s quay rng tip sau (Y) cho thng vi cc 2. C nh vy iu khinquay rotor.

3.5 Nguyn l hot ng c bn ca ng c bc:

ng c bc hot ng da trn vic cp xung ,n khng c b chuyn mchbn trong nn tt c mch o phi c iu khin bn ngoi bng b iu khin. Ti mi thi im s ch c mt hay hai cun dy c in(ty vo phng

php iu khin l y bc hay na bc).Khi trng thi cp xung thay i th ssinh ra moment xon v s lm cho roto quay. iu khin chiu quay ng c :thay i th t cp xung ,gi s ng c ang bc th 8 ta cp xung cho bc th 7 th lc n s quay ngc li. iu khin tc :thay i rng xung v tn s xung .

Trong :V: vn tc trung bnh ca ng c bc. (vng/giy)n: s ln dch bc.t: thi gian ng c thc hin n ln dch bc. (giy): gc bc ca ng c ()f : tn s dch bc.


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3.6 Cc phng php iu khin ng c bc.

iu khin bc iu khin na bc

iu khin vi bc

3.6.1 iu khin bc:a. Mt pha:

Ti mi thi im ch c 1 mu c cp in.

b. Hai pha:

Ti mi thi im s c 2 mu c cp in.


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3.6.2 iu khin na bc:

Khi khng c phn no ca mch t bo ha, th vic cp in ng thi chohai mu ng c s sinh ra mt moment xon theo v tr l tng ca cc moment

xon i vi hai mu ng c ring l. i vi ng c hai mu nam chm vnhcu hoc hn hp, hai ng cong ny s l S radians khc pha, v nu dng quahai mu bng nhau, nh ca tng s nm v tr S/2 radians k t nh ca ngcong gc, nh hnh di

y l c bn ca iu khin na bc. Moment xon gi l nh ca ngcong moment xon kt hp khi hai mu c cng dng ln nht i qua. i ving c nam chm vnh cu v hn hp thng thng, moment xon gi hai mus l:

h2 = (2^0.5) h1

Trong :

h1 moment xon gi trn mt mu

h2 moment xon gi hai mu

iu ny cho thy rng khng c phn no trong mch t bo ho v momentxon theo ng cong v tr i vi mi mu l hnh sin l tng.Hu ht cc bng hng dn ng c nam chm vnh cu v bin t tr u ch ramoment xon gi hai mu m khng c a ra moment xon gi trn mt mu.

Nu bt k phn no trong mch t ca ng c b bo ho, hai ng congmoment xon s khng th cng tuyn tnh vi nhau. Kt qu l moment tng hpc th khng nm chnh xc ti v tr S/2 k t v tr cn bng ban u.

3.6.3 iu khin vi bc:

Cho php cc bc nh hn bng vic dng cc dng khc nhau qua hai mung c, nh hnh v di:


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i vi mt ng c hai mu bin t tr hoc nam chm vnh cu, cho rngcc mch t khng bo ho v cc ng cong moment xon trn mi mu theo vtr l mt hnh sin hon ho, cng thc di y a ra nhng c tnh ch cht

ca ng cong moment xon tng hp:

h = ( a2 + b2 )0.5x = ( S / ( /2) ) arctan( b / a )

Trong :

a moment xon p trn mu vi v tr cn bng ti 0 radiansb moment xon p trn mu vi v tr cn bng ti S radiansh moment xon gi tng hpx - v tr cn bng tnh theo radiansS gc bc, tnh theo radians.

Khi khng c bo ho, cc moment xon a v b t l vi dng i qua cc mutng ng. iu ny rt thng dng khi lm vic vi cc dng v moment xonbnh thng, moment xon gi mu n hoc dng cc i c chp nhntrong mt mu ng c l 1.0.


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4. Gii thiu tng quan v WINCC

4.1 To mt n mi trong WinCC

To d n l bc u tin trc khi tin hnh thit k iu khin mt itng c th.Phn ny gii thiu nhng t tnh c bn ca WinCC ( windowscontrol center ), cung cp mt cch tng quan v cc bc son tho mt d ntrong wincc 6.0.

son tho mt d n ( project ) trong Wincc tin hnh thc hin theo cc bc : To mt d n ( project ) mi trong Wincc. Chn PLC hoc DRIVERS t Tag Management. To cc bin ni (Internal ). To hnh nh t ca s giao din Graphics Designer. Thit lp cc thuc tnh ca hnh nh c to t Graphics Designer. Thit lp mi trng thi gian thc hin. Chy m phng.

4.1.1 To d n ( project ) mi.

u tin khi ng chng trnh WinCC 6.0 bng cch: T thanh Taskbar,chn Start > Simatic > WinCC > Windows Control Center 6.0.

Hp thoi WinCC Explorer xut hin, trong khung Create a New Project c 3 lachn:


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Nu chn Single-User Project hoc Multi-User Project phi nhp tn d n. m mt d n c sn chn Open an Existing Project sau tim n tp tin cui .mcp.

D n ny c thc hin trn my n khng c ni mng, chn mcSingle-User Project. Sau , nhp OK chp nhn.

Hp thoi Create a new Project xut hin, t tn cho d n trong khungProject Name.

Trong khung Project Path, chn a v th mc lu d n. Tip tc

nhp nt Create to d n.

Ca s mn hnh son tho WinCC Explorer xut hin nh hnh di:


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Lun Vn Tt Nghip Trang: 324.1.2 Chn PLC hoc Drivers t Tag Management:

thit lp kt ni truyn thng gia Wincc vi thit b cp di cn cmt mng lin kt chng vi nhau trong vic trao i d liu. Do , cn chn mtDriver.

Driver : L giao din lin kt gia Wincc v PLC

Trong ca s son tho, nhp chut phi vo mc Tag Management t trnhn s xung chn Add New Driver .

Hp thoi Add New Driver xut hin, cho php chn mng kt ni giaWinCC v PLC . Tu theo tng loi PLC m ta chn mng kt ni cho ph hp.

4.1.3 To bin:

to kt ni cc thit b trn mt d n trong WinCC, trc tin phi tocc Tags ( bin ) trn WinCC. Bin c to di Tag Management.

Bin gm c bin ni v bin ngoi: Bin ni ( Internal ): L bin c sn trong WinCC. Nhng bin ni ny l

nhng vng nh trong ca WinCC, c chc nng nh mt PLC thc s. Bin ngoi ( External ): L bin qu trnh, phn nh thng tin a ch ca h

thng PLC khc nhau.

Cc Tags c th c lu trong b nh PLC hoc trn cc thit b khc.Wincc kt ni vi PLC thng qua cc Tags. To nhng nhm bin( Groups ) thit b: khi d n c mt khi lng ln d liu vi nhiu bin,c th nhm cc bin ny thnh mt nhm bin thch hp theo ng quicch. Nhm bin l nhng cu trc bn di s lin kt PLC, c th tonhiu nhm bin v nhiu bin trong mi nhm bin nu cn.

a.To cc bin ni :

Cc bin ni d dng c to v sau c gn vo mt PLC tht. Ccbin ny c nhim v x l v gim st qu trnh hot ng cng nh vn hnh.


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Lun Vn Tt Nghip Trang: 33To bin ni bng cch nhp phi vo Internal Tag, chn New Tag

Hp thoi Tag Properties xut hin, t tn bin v chn d liu cho phhp vi mi kiu thit b. V d : Nu bin l ng c chn d liu Binary Tag.Nu bin l bn nc chn d liu Unsigned 8-bit Value.

Trong hp thoi Tag Properties , bin c nhiu kiu d liu khc nhau nh:

Banary Tag: kiu nh phn. Unsigned 8-bit value: kiu nguyn 8 bit khng du. Signed 8-bit value: kiu nguyn 8 bit c du Unsigned 16-bit value: kiu nguyn 16 bit khng du. Signed 16-bit value: kiu nguyn 16 bit c du.

Unsigned 32-bit value: kiu nguyn 32 bit khng du. Signed 32-bit value: kiu nguyn 32 bit c du. Floating Point Number 32 bit IEEE 754: kiu s thc 32 bit theo tiu chun

IEEE 754. Floating Point Number 64 bit IEEE 754: kiu s thc 64 bit theo tiu chun

IEEE 754.

Text Tag 8 bit character set: kiu k t 8 bit. Text Tag 16 bit character set: kiu k t 16 bit. Raw Data Type: kiu d liu th.

Bin c th di chuyn t nhm bin ny sang nhm bin khc bng cchnhp phi vo bin cn di chuyn t menu s xung chn Cut v gn vo nhmbin cn gn.


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Lun Vn Tt Nghip Trang: 34b. To cc bin qu trnh:

to bin qu trnh nhp phi vo mc PLC1 chn New Tag.

Hp thoi Tag Properties xut hin, cho php chn loi d liu v chuyni li nu cn.

t tn bin mi trong khung Name, chn kiu d liu trong khung Datatypebng cch nhp mi tn bn phi s xung, ri chn kiu d liu cn thit, sau nhp Select.

Hp thoi Address Properties xut hin nh hnh trn. Trn hp thoi nym t kiu d liu, a ch vo / ra ( Input/ Output ), bit nh. Sau khi chn xong,nhp OK kt thc qu trnh la chn.

4.1.4 To hnh nh, thit lp cc thuc tnh:


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Lun Vn Tt Nghip Trang: 35a. To hnh nh:

to hnh nh u tin phi m giao din ha. Nhp phi chut voGraphics Designer, t menu s xung chn New Picture. Xut hin mt tp tinbn phi ca s WinCC Explorer c tn NewPdl0.Pdl. Nhp phi vo n chnOpen Picture nh hnh di.

Ca s giao din mn hnh thit k ha Graphics Designer xut hin.

Ca s Graphics Designer: to giao din ha, ca s gm nhng cng c sau: Color Palette ( bng mu ): gm c 16 mu tiu chun, c th gn cho

mu nn hoc cc i tng khc. Object palette ( bng i tng ) bao gm:

+ Cc i tng chun ( Standard Objects ) nh : Elip, a gic ( palyg),hnh ch nht.

+ Cc i tng thng minh ( Smart Objects: iu khin OLE ( OLEControl ), yu t OLE ( OLE Element ), trng vo / ra ( I/O Field ).

i tng windows (windows objects): gm nt nhn ( Button), hp kimtra ( check box ).


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Dynamic Wizard Palette ( bng hnh ng ): h tr vic to cc itng ng.

Alignment Paletter (bng lin kt ): xc nh vic thay i v tr ca mthoc nhiu i tng , thay i v tr ca i tng c chn hoc hpnht chiu cao v chiu rng ca nhiu i tng.

Zoom Paletter ( bang Zoom ): phng to, thu nh ca s mn hnh ha

theo kch thc chun 8,4,1,1/2, hay . Menu Bar ( thanh trnh n ):gm tt c nhng lnh c sn trn thanh

trnh n ca giao din thit k ha Graphics Designer. Standard Toolbar ( thanh cng c ): bao gm nhng biu tng hoc nt

nhn, cho php thc hin nhng lnh thng dng. Layer Bar ( thanh Layer ): bao gm 16 layer ( Layer 0-Layer 15). Layer 0

l thit lp mt nh ca Graphics Designer.


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Lun Vn Tt Nghip Trang: 37b. Thit lp cc thuc tnh hnh nh:

thit lp cc thuc tnh hnh nh, u tin phi to cc hnh nh. DngFile NewPdl0.Pdl to giao din gm c: nt nhn start, stop, ng c. Nhngi tng ny nm trong th vin ca WinCC.

+ To nt nhn:

T bng i tng Object Palette nhp du + mc Windows Object chnButton v di chuyn con tr ra mn hnh n v tr cn thit. C th v nt nhnmong mun.

Khi th chut hp thoi Button Configuration xut hin nh hnh. khungText t tn nt nhn l Start. Nhp chn Font ch v mu sc nt nhn. Sau nhp OK hon tt vic to nt nhn.

Tng t cc bc nh trn to nt nhn Stop.

+ To hnh nh ng c :


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Lun Vn Tt Nghip Trang: 38u tin, m th vin bng cch chn View > Library hoc nhp biu

tng Display Labrary trn thanh cng c.

Hp thoi Library hin th. Nhp p mc Global Library xut hin bngsau.

cc hnh nh hin th trong th vin, trn thanh cng c nhp chn biutng Preview.

cc hnh nh hin th ln hay nh nhp chn Large Icons hoc Small

Icons.

a mt hnh nh t th vin ra giao din, ch cn nhp gi chut v dichuyn ra giao din mn hnh.

i vi WinCC 6.0 hnh nh Motor rt a dng v phong ph. C nhiuloi khc nhau vi hnh nh 2 chiu,3 chiu. Trong th vin hnh nh Motor c thly dng PlantElement > Motor hoc Siemens HMI Symbol Library 1.3 > Motorhoc Symbol > Motor. Nhp chn Motor ph hp v a ra giao din thit k.


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Sp xp cc hnh nh ta c giao din thit k nh hnh di.

4.1.5 To thuc tnh cho i tng:

to thuc tnh cho nt nhn Start, bng cch nhp phi vo nt nhnStart chn Properties nh hnh :


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Lun Vn Tt Nghip Trang: 40Hp thoi Object Properties xut hin nh hnh chn Tab Events > Mouse

> Press Left sau nhp phi vo du mi tn chn C-Action hp thoi EditAction xut hin nh hnh.

Chn Internal Functions > Tag > Set. Sau nhp p vo SetTagbit hpthoi Assigning Parameters xut hin nh hnh.

Ta nhp vo hng Tag-Name ri nhp vo nt vung chn Tag Selection.

Hp thoai Tags- project xut hin chn Start sau nhp OK.


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Tr li hp thoi Assigning Parameters nt nhn Start c chn. hngValue t gi tr l 1 ct Value. Sau nhp OK chp nhn.

Lc ny trn hp thoi Edit Action xut hin Tag Start mang gi tr 1 tiptheo nhp p vo SetTagBit lin kt thm Tag na cho nt nhn Start.

Hp thoi Assigning Parameters xut hin, tng t ti dng Tag Name,chn tag Stop v gn gi tr 0 cho tag ny.


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Khi trong hp thoi Edit Action xut hin thm Tag Stop v mang gi tr0, nhp OK. Bng thng bo xut hin, chn Yes ng i m ngun.

Quay tr li hp thoi Object Properties du mi tn chuyn sang mu chng t kt ni thnh cng.

Tin hnh to thuc tnh cho nt nhn Stop tng t nh nt nhn Start.Nhng cc gi tr s ngc vi nt nhn Start. nt nhn Stop, th khi gn tagStop n s mang gi tr 1 v tag Start mang gi tr 0.

to thuc tnh cho ng c, ta nhp phi vo ng c chn Properties.

Hp thoi Object Properties xut hin, chn thuc tnh Control Properties.Trong khung bn phi chn mc BlinkMode, sau nhp phi vo biu tngbng n, chn Dynamic Dialog


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Hp thoi Dynamic Value Ranges xut hin, nhp vo nt vung khungExpression/Formula chn Tag.

Ca s Tags-project xut hin, nhp p chn Tag ng c.

Tr li hp thoi Dynamic Value Ranges, nhp ty chn Boolean. Sau nhp p vo No Flashing cng hng Yes/True, ri chn Apply.

4.1.6 Chy ng dng :


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xem ng dng thit k chy nh th no, nhp chn nt Runtime trnthanh cng c ca Graphics Designer hoc nt Activate trn ca sWinCCExplorer:Sau vi giy s thy hnh nh nh hnh:

Chy m phng ng dng hot cnh:

Nu khng c mt PLC kt ni vn hnh, c th dng Simulator chym phng ni dung thit k. Simulator hin th nhng hot ng ca hnh nhtrong thi gian thc thi file nh .

Khi ng Simulator t thanh Taskbar, nhp chn Start > Simatic >WinCC > Tools > WinCC Tag Simulator.Hp thoi Simulator xut hin nh hnh :

Nhp chn Edit > New Tag hin th bin. Hp thoi Tags-projectxuthin. Trn hp thoi, chn bin hin th.

V d : chn bin ng c .


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Tip tc nhp chn Tab Inc. Trong khung Start Value, t gi tr bt u hin th l 0. Trong khung Stop Value, t gi tr kt thc mt chu trnh hot ng

l 100. nh du kim mc Active nh hnh:

Sau , nhp chn tab List Of Tags.

4.2 Chc nng Tag Logging :

Tag Logging c cc chc nng cho php ly d liu t cc qu trnh thcthi, chun b hin th v lu tr cc d liu . D liu c th cung cp cc tiuchun v cng ngh v k thut quan trng lin quan n trng thi hot ng cah thng.


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4.2.1 Nhim v Tag Logging:

Tag Logging chia lm 2 phn: H thng cu hnh ( Tag Logging CS ). H thng Run- Time ( Tag Logging RT ).

a. Nhim v ca Tag Logging CS:

C th gn tt c cc t tnh cn thit lu tr v hin th cho d liubng Tag Logging CS. Cc t tnh ny phi c to v chun b trc khi hthng Run-Time khi ng. Tag Logging CS ca WinCC cung cp mt giao dinc bit cho mc ch ny.

b. Nhim v ca Tag Logging RT:

H thng Tag Logging RT nhn cc gi tr d liu v lin kt chng vi cct tnh n nh. Cc d liu nh hnh theo kiu ny, c thc hin trc hin th v lu tr.Tag Logging c thc hin cho cc mc ch sau:

Ti u ha h thng. Cung cp cc th tc vn hnh r rng, d hiu. Tng nng sut. Tng cht lng sn phm. Ti u ha chu k lp li ( delay ). Cung cp ti liu.

c. Cu trc ca Tag Logging CS :

Tag Logging CS c cc phn chnh sau :

Timers : to cc chu k thu thp v lu tr. Archives : to cc vng lu tr v cc tags. Trend Window Templates : hin th gi tr o lng bng ng cong. Table Window Templates : hin th gi tr o lng theo dng bng.

+ Timers : Tag Logging phn bit 2 h thng thi gian khc nhau :Thi gian thu thp v thi gian lu tr.

Thi gian thu thp : khong thi gian m cc gi tr trong c saochp t nh qu trnh ca qun l d liu bi Tag Logging.


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Lun Vn Tt Nghip Trang: 48 Thi gian lu tr : khong thi gian m d liu trong c np vo

vng lu tr. Thi gian lu tr lun l mt s nguyn gm nhiu khongthi gian thu thp. gi tr mi nht c np vo vng lu tr.

Thi gian nn : c s dng to khong thi gian gii hn trong dliu c nn.

+ Lu tr ( Archives ) : c th lu tr bng mt trong 3 cch : Lu tr gi tr qu trnh: Nhn ni dung ca cc Tags qun l d liu. Lu tr nn: Nn d liu v lin kt cc gi tr rt hiu qu. Bng cch

ny, cc gi tr o lng c b tc trc tip v ghi nhn ngay lp tc.Lu tr nn cho php lu tr trong thi gian di cho tt c cc kiu Tagskhc trong Tag Logging.

Lu tr theo ngi dng : Mt s bin ngi dng ( Tags User-Defined)c np vo vng lu tr cho ngi s dng. Vng ny dng thu thpd liu quan trng, n nh tham s sn xut, iu khin d liu lit k.Giao tip gia PLC v WinCC c thc hin bi cc dng thng bo

tun th theo cc quy c t bit v cu trc.

+ Trends:C th v th cc ng cong t gi tr thu c trong qu trnh. vi chcnng ny WinCC c th theo di s thay i cc gi tr o lng theo thi gianmt cch tng qut v r rng. C th v c nhiu ng cong trn cng th, bng cch chn nhiu bin tng ng vi cc thng s cn hin th.

+ Tables :Table cng c chc nng ging nh Trend, nhng khng hin th cc thng s

bng ng cong m bng gi tr c th ti mt thi im c th. Vi tnh nngny ca Table, khi cn thit c th hiu chnh cc thng s u vo t ccc gi tr ng ra ti u nh mong mun.

4.2.2 Hin th cc gi tr x l :

Qu trnh hin th cc gi tr x l c thc hin theo cc bc sau : M mt Tag Logging mi. nh dng Timer. To mt lu tr s dng Archiving Wizard.

To mt Trend Window trong Graphic Desgner. Chn mt Trend Window vo trong hnh.

Chn mt Table Window vo trong hnh. Thit lp thng s hot ng. Thc thi hnh nh trong thi gian thi hnh.

4.3 Chc nng Alarm Logging :


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Alarm Logging m bo ph trch cc thng bo nhn c v lu tr, chacc chc nng nhn thng bo t cc qu trnh, chun b, hin th, hi p vlu tr chng. Vi t tnh ny, Alarm Logging gip ngi dng tm ra nguynnhn ca li trong h thng trong khi vn hnh.H thng Alarm Logging c cc t tnh sau :

Cung cp cc thng tin v li v trng thi hot ng ton din. Cho php sm nhn ra cc tnh trng nguy cp. Trnh v gim thiu thi bo. Cht lng sn phm ngy cng tng. Cung cp ti liu

Alarm Logging bao gm 2 thnh phn h thng : H thng cu hnh ( Alarm Logging CS ). H thng Run- Time ( Alarm Logging RT ).

4.3.1 Nhim v ca Alarm Logging CS :

S dng Alarm Logging CS t cu hnh cho h thng thng bo chngc hin th theo cch ta mun. C th thc hin iu ny trc khi h thngRun-Time khi ng. h thng cu hnh Alarm Logging ca WinCC cung cp mtgiao din c bit to lp sn.

4.3.2 Nhim v ca Alarm Logging RT :

Alarm Logging RT c nhim v thu thp cc thng bo v hi p, chun b

cc thng bo hin th v lu tr.

4.3.3 Khi qut v Alarm Logging :

a. Thng bo :

Cc thng bo xut t cc bin c v c hin th bi Alarm Logging theotrnh t thi gian. H thng phn bit gia cc kiu s c sau :

Binary Events: thay i trng thi trong cc Tags ( tag ni v tag ngoi). Cc dng thng bo: cha cc mc v chc nng nh: qu trnh, theo di

h thng iu khin, cc ng dng.

Theo di cc s c : h thng Alarm Logging cha h tr vic theo di ccs c. Tuy nhin , vn c th lit k cc s c nh: Trn b phn lu tr,thng bo v tnh trng my in, li do Server, s c trong qu trnh truynthng qu trnh,thng bo nhm, iu khin qu trnh v lu tr.


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Lun Vn Tt Nghip Trang: 50b Th tc thng bo :

WinCC h tr 2 th tc thng bo gm: Th tc thng bo bit v thng bong trnh t thi gian.

Th tc thng bo bit : Th tc ph bin cho php nhn cc thng

bo t PLC. Alarm Logging s thu thp cc gi tr thc s t vicqun l bin ( tag ) ca qun l d liu. Alarm Logging s gn ngy,gi trong th tc ny.

Thng bo ng trnh t thi gian : Th tc ny gi s rng chnh ccPLC to ra thng bo s c,t n nh ngy / gi v cc gi tr qu trnh.Tt c cc thng bo ca PLC c nhm li bi mt dng thng bo tosn cho ton b d n.

Cu trc mt thng bo :

Mt thng bo cha cc thng tinh h thng v cc tham s khc, chin th theo hnh thc cc ct. Nu cc ct ny cha cc tn ng nht, ccgi tr v cc khi ging nhau, c gi l cc khi thng bo.

T chc cc thng bo :WinCC cung cp 16 lp thng bo vi 16 kiu thng bo. C th t cu hnh

cho cc lp thng bo. Mi mt thng bo c gn vi mt kiu thng bo. Cckiu thng bo cng c nhm trong cc lp thng bo.

Hin th cc thng bo trong ch Run-Time :

+ Bo co thng bo : Mt hnh thc khc ca vic chuyn thng bo l hinth bng bo co. H thng phn bit gia cc kiu sau :

- Bo co thng bo theo trnh t : Cung cp lin tc cc th tc v thngbo.

- Bo co lu tr : Cha cc thng tin vo ni lu tr.

+ Thng bo n v theo nhm : Nu cc thng bo c nh hnh ringbit ( thng bo n ) nhm li vi nhau, c gi l thng bo theo nhm. Mtthng bo theo nhm c th c to cho mi lp v kiu thng bo. Ngoi ra , c

th kt hp cc thng bo theo nhm. Nu mt thng bo theo nhm c hinth, ngha l c t nht mt thng bo n c thc thi. Khng th nhn ra ccthng bo n trong kiu hin th ny.


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Lun Vn Tt Nghip Trang: 51+ Kha v cho php thng bo : Cc thng bo c bit, cc lp v kiu thng

bo c th n v hin li trong vic thu thp ch Run Time.

+ Lu tr trong thi gian ngn : c th lu tr trong thi gian ngn n10000 thng bo trong danh sch cc thng bo.

+ Lu tr tun t : Ton b a cng c th c s dng. C th dng ccvng lu tr nh : Lu tr trong thi gian ngn v lu tr lin tc trn a cng.

4.4 Thit lp thng bo:

thit lp mt h thng thng bo hon chnh cho Alarm Logging cntin hnh theo cc bc sau : M Alarm Logging. Khi ng Message Wizard. nh dng khi bn tin.

Sa i ca s bn tin. nh cu hnh son tho bn tin. t lp mu cho bn tin. Gim st gi tr. Chn ca s bn tin vo trong bc nh. t thng s hot ng v chy ng dng.


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CHNG 3: M HNH IU KHIN NG C BC

1. Mch iu khin ng c bc n su dy:

1.1 S nguyn l


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R P 31 0 K

1

23456789

U 4

U L N 2 8 0 3

1 0

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1 81 71 61 51 41 31 21 1

C O M

I N 1I N 2I N 3I N 4I N 5I N 6I N 7I N 8

O U T 1O U T 2O U T 3O U T 4O U T 5O U T 6O U T 7O U T 8

R 1 7

2 K 2

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Mch kch ng c:

C 11 0 0 n F

U 2

L 2 9 8

57

1 01 2

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1 31 4

61 1

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V C C 1V C C 2

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Lun Vn Tt Nghip Trang: 60 S mch in

1.2 Nguyn l hot ng1.2.1 IC L298


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a. Tc dng cc chn

PIN NAME FUNCTION

1;15 Sense A,Sense BGia mi chn ny vi t c th ni 1 in

tr iu khin dng qua ti.

2,3 Out1;out2L 2 ng ra ca cu A,dng qua ti kt ni

gia 2 chn ny s c gim st bi chn s1.

4 Vcc1Ngun cung cp cho ti,1 t in 100nF phi

c kt ni gia chn ny vi mass

5;7 Input1;input2 Ng vo ca cu A tng thch mc TTL

8 GND ground

9 Vcc2Ngun cung cp logic,1 t in 100nF phi

c kt ni gia chn ny vi mass.10;12 Input3;input4 Ng vo cu B tng thch mc TTL

13;14 Out3;out4Ng ra ca cu B,dng qua ti kt ni gia 2

chn ny s c gim st bi chn s 15


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Lun Vn Tt Nghip Trang: 62b. Cc thng s lm vic max

c. c tnh in


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L298 c th lm vic vi ngun cng sut(Vcc1) ln n 50V,v ngunlogic(Vcc2) n 7V,dng ti ti a cho mi knh l 2A,v c th ln n 4Anu u song song 2 knh li vi nhau.

1.2.2 IC ULN 2803


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a. Tc dng ca cc chn IC

Chn 1 n 8 Ng vo

Chn 18 n 11 Ng raChn 9 Ground

Chn 10Chn chung v c ni ln ngun

dng

+ Thng s lm vic ln nht:


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+ c tnh in:

1.2.3 OPTO 4n35:


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a. Thng s lm vic

b. c tnh in


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CTR(current transfer ratio)=(Ic/If)*100%

c. Kim tra dng in


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d. Dng sng

e. Thi gian chuyn mch ch ON

f. Thi gian chuyn mch ch OFF


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g. c tnh V-A ng vo

h. c tnh A-A

1.3 Hot ng ca mch

Tn hiu iu khin t PLC c a n khi iu khin cng sut thngqua b cch ly quang.B cch ly gm opto 4n35 v uln 2803;tn hiu ng ra optob o nn cn b m o uln 2803 tn hiu sau b cch ly khng b o so vitn hiu vo.


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Lun Vn Tt Nghip Trang: 72 Khi cng sut l 2 IC L298,mi IC gm 2 mch cu H ,c 4 knh c ghp

ni li thnh 2 knh c th chu c dng ti a 4A;2 IC s c 4 knh iukhin 4 pha ca ng c.u dy chung ca ng c c ni xung mass. Cc diode D1 n D4 loi 1N4448 c nhim v bo v cho cc transistor cngsut ca mch cu H bn trong IC L298 . Cc ch iu khin ng c:

1.3.1 iu khin na bc

a. Gin xung

1.3.2 iu khin y bc 1 pha

STEP 4 3 2 1

B1 0 0 0 1B2 0 0 1 1B3 0 0 1 0B4 0 1 1 0B5 0 1 0 0

B6 1 1 0 0B7 1 0 0 0B8 1 0 0 1

STEP 4 3 2 1

B1 0 0 0 1B2 0 0 1 0B3 0 1 0 0B4 1 0 0 0


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b. Gin xung

2. S kt ni PLC2.1 S kt ni mch iu khin


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2.2 Khai bo thit b ng vo ra

Tn bin Chc nngI0.0 Nt nhn Start khi ng h thng.

I0.1 Nt nhn Stop dng h thng.I0.2 Nt nhn Reset b mQ0.0 Ch t gi h thngQ0.1 iu khin 1 ca ng c bcQ0.2 iu khin 2 ca ng c bcQ0.3 u khin 3 ca ng c bcQ0.4 iu khin 4 ca ng c bcQ0.5 iu khin ng c ct giy

2.3 Chng trnh PLC


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Sau khi thit k mch iu khin xong, ta kim tra li ( plc > compile khi gc tri pha di mn hnh c ch 0 errors l c), ri lu li vi tnDONGCOBUOC, tip theo tin hnh m phng kim tra hot ng ca mch.

Trc tin ta cn chn loi CPU m ta cn kt ni m phng : t bn trica ca s thit k nhp phi vo tn DONGCOBUOC m ta va lu chn Type >PLC Type > CPU 226CN > ok.


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Sau nhp vo biu tng Download np chng trnh cho plc

Kim tra hot ng trn plc nu tha yu cu l t, n y hon thnh cngvic vi STEP 7-Micro/Win 32.


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3. To kt ni trn S7-200 PC Access

Khi ng s7-200 pc access, trn thanh Taskbar chn start > simatic > S7-200 PC Access v1.0.0.56 > S7-200 PC Access, ca s Unitiled xut hin, nhpphi vo MicroWin chn New PLC

Xut hin hp hi thoi, mc Name nhp vo s7-200 ri chn ok

Sau nhp phi vo s7-200 chn New > item

Hp thoi item xut hin, mc Name nhp vo start, mc Address nhp voM0.0 ri chn ok


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Tng t ta to cc item khc da vo chng trnh PCL m ta thit k Step7- Micro/win ta c kt qu nh sau :

Sau lu li vi tn DONGCOBUOC (nh lu trng vi tn lu trn Step 7-Micro/win), tip theo chn cc item to ri ko th xung vng Test Client nhhnh bn di :


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Sau chn status trn thanh cng c > chn start test client, nu thy ctQuality chuyn t Bad sang Good l t


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4. M hnh gim st trn WinCC 6.0

Khi ng chng trnh WinCC, chn start > SIMATIC > WINCC > WindowControl Center 6.0.Trn thanh trnh n, chn File > New to d n mi.

Hp thoi WinCC Explorer xut hin, nhp ty chn mc Single User Projectri nhp ok. Bng Create a new project xut hin, nhp tn SCADA vo mcproject name. sau nhp vo du mi tn khung Drive chn D ng dn lu,nhp Create to d n.

Lc ny khung bn tri ca s vWinCC Explore xut hin d nMOHINHCATGIAY. Sau nhp phi vo mc Tag Management chn AddNew Driver.


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Lc ny trong mc Tag Management xut hin drive OPC, nhp p vo n

hin cng kt ni . sau nhp phi vo cng OPC Groups chn New DriverConnection.

Ca s Connection properties xut hin. Nhp tn S7-200 vo khung Name ri

chn properties.Ca s Newconnection properties xut hin, nhp S7200.OPCSERVER vo mcOPC Server Name, ri nhp vo nt Test Server, nu xut hin 1 khung nh hinch Test ok chn ok > ok > ok kt thc vic kt ni.


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Lcnytrong mcOPCGroups xut hin S7-200, nhp phi vo n chn New Group to nhm Tagcho chng trnh .

HpthoiProperties of tag group xut hin, nhp tn CATGIAY vo mc Name. Nhp ok chp nhn.


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Lun Vn Tt Nghip Trang: 85Tip theo nhp phi vo nhm Tag va to, chn New tag to Tag cho

chng trnh .

Ca s Tag properties xut hin, nhp tn Tag l START vo khung Name,chn kiu d liu Binary Tag trong mc Data type ri nhp Select.

Ca s Newtag properties xut hin, nhp vo mc item Name tn

Microwin.S7-200.START (nh nhp trng tn vi mc Item I D trong S7- 200 PCAccess), mc Access Path nhp M0.0, mc Data type chn Boolean valuethng thng mc ny hin th mc nh, nhp ok > ok kt thc vic to tagSTART.


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Ca s Tag properties xut hin, nhp tn Tag l STOP vo khung Name,chn kiu d liu Binary Tag trong mc Data type ri nhp Select.

Ca s Newtag properties xut hin, nhp vo mc item Name tnMicrowin.S7-200.STOP, mc Access Path nhp M0.4, mc Data type chn

Boolean value thng thng mc ny hin th mc nh, nhp ok > ok kt thcvic to tag STOP.


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Tng t to cc Tag cn li, sau khi to xong ta c danh sch bng tagnh hnh di :

5. Thc nghim m hnh:5.1 Nhim v


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Nhim v t ra l thit k c mt m hnh hon chnh c th ct giy tng hon ton theo yu cu . Do vy ta cn:

Thit k b khung ca my vng chc gn ng c v b phn khc. Tm mt c cu dao hp l, hiu qu cho vic ct giy. H thng rul phi chnh xc . ng c bc v ng c DC phi ph hp vi m hnh v kch thc, vlc ko. Thit k bo mch cho my.

5.1.1 M hnh ct giy thc t

a. Dao ct giy

Hnh: Dao ct giy

Dao ct giy trn m hnh c to nn t s kt hp gia mt ng c DC24V v mt phn ca dao ct giy c thit k li cho ph hp vi m hnh ca ti.


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ng c DC truyn ng cho dao ct thong qua mt a trn v mt thanhdn thng, ng vi mi vng quay ca ng c dao s thc hin mt ln ct giy.

Hnh: Thanh dn v a trn

tr gip cho vic ct v hot ng ca my, trn dao ct c gn thmmt thanh chn gi giy khng b trt lc ct v giy khng dnh theo daotrong hnh trnh i ln ca dao ct.

Hnh: thanh chn giy

b. C cu cun giy


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C cu cun giy trong m hnh c thit k theo c cu cun giytrong my in, n bao gm hai phn: mt rul cun chnh v hai ming chn c trcxoay t ln rul cun. u im ca c cu ny l gn nh v hiu qu.

iu khin rul l mt ng c bc n cc 1.8 /bc, 2 pha, 6 dy .ng c bc truyn cho rul thng qua bnh rng truyn v ai truyn nh hnhv di y.

Hnh: bnh rng v ai truyn

5.2 Xy dng m hnh gim st trn WinCC


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Lun Vn Tt Nghip Trang: 91Trong ca s WinCCExplorer, nhp phi vo mc Graphics Designer chn

New picture.

Trong khung bn phi xut hin filenh NewPdl0.Pdl, nhp phi vo file ny chn Rename picture i tn.Bng New Name xut hin, nhp tn DCCATGIAY vo khung trng, ri nhp ok.

Sau nhp phi vo file va i tn, chn Open picture m giao din thit k.

Ca s Graphics Designer [DCCATGIAY.pdl ] xut hin. Trn thanh thuc tnh,nhp vo biu tng Grid On/Off tt li cho vng thit k .


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ly m hnh cc linh kin, trn thanh trnh n chn View > Library.

Ca s Library xut hin . y l ni cha tt c cc m hnh linh kin, my mc,thit b ca WINCC m ta ly.Nhp p vo Global Library m ra cc th mc cha thit b. quan st ccthit b chn biu tng mt knh (preview) v Giant Icons.

ly bng ti, chn Siemens HMI Symbol Library 1.3 > 3-D ISA Symbols > 3-D Conveyor.


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ly ng c ko bng ti, chn PlantElements > Motors > B5.

ly led hin th, chn Displays > Displays > Digital Output.

to nt nhn, nhp vo du cng mc Windows Objects trong khung ObjectPalette, ri chn Button. Sau a tr sang khung v, nhp vo khong trng riko r to nt nhn hnh vung

Hp thoi Button Configuration xut hin, trong khung Text nhp tn nt nhnSTART, c th to thm thuc tnh mu v font cho ch, ri nhp ok chp nhn .


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Sau khi ly xong cc thit b, sp xp thnh m hnh nh hnh di :

5.3 Thit lp thuc tnh i tng5.3.1Thit lp thuc tnh cho ng c ko bng ti


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Lun Vn Tt Nghip Trang: 95Nhp phi vo ng c , chn Properties, hp thoi Object Properties xut

hin, chn thuc tnh nhp nhy Flashing. Trong khung bn phi nhp p vomc Flashing Background Active chuyn No thnh Yes, sau nhp phi vobiu tng bng n, chn Tag.

Ca s Tag Project xut hin, nhp p chn ng dn OPC > OPC Groups >S7-200 > CATGIAY > DCCATGIAY, nhp ok chp nhn.

Tr li hp thoi Object Properties, biu tng bng n chuyn sang mu

xanh chng t vic kt ni Tag thnh cng, nhp phi vo 2s ri chn Uponchange.


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Tng t cho DCBUOC1, DCBUOC2, DCBUOC3 v DCBUOC4

5.3.2. Thit lp thuc tnh cho bng ti :

Nhp phi vo bng ti , chn properties, hp thoi Object Properties xut hin,chn tab Properties > control properties, nhp phi vo Blink Mode chn DynamicDialog.

Hp thoi Dynamic value ranges xut hin, nhp vo nt vung khungExpression/ Formula chn Tag.

Hp thoi Dynamic value ranges xut hin, nhp vo nt vung khungExpression/ Formula chn Tag.


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Ca s Tag project xut hin, nhp p chn tag DCBANGTAI.

Tr li hp thoi Dynamic value ranges, nhp chn mc Boolean , sau nhpp vo No Fashing cng hng Yes/TRUE chn Shaded-2, ri chn Apply .

5.3.4. Thit lp thuc tnh cho led hin th


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Nhp phi vo led HIENTHI, chn Properties, hp thoi Object Properties xuthin. Chn Properties > Output/input, khung bn pi hp thoi nhp p vobiu tng bng n cng dng Output Value, chn tag.

Hp thoi Tag project xut hin, nhp p chn tag HIENTHI

Tr li hp thoi Object Properties, ti dng Output value hin th tag va chn.sau nhp vo 2s, chn Upon change


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Lun Vn Tt Nghip Trang: 995.3.5. Thit lp thuc tnh cho nt nhn start v stop:

Nhp phi vo nt nhn START chn properties, hp thoi Object properties xuthin, chn tab Events > Mouse. trong khung bn phi nhp phi vo biu tng hng Press left chn C- Action

Hp thoi Edit Action xut hin, chn ng dn Internal Function > tag > set,ri nhp p vo SetTagBit.

Hp thoi Assigning Parameters xut hin, chn hng Tag_Name, ri nhp vont vung chn Tag selection.

Ca s Tag project xut hin, chn tag START ri nhp Ok chn .


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Tr li hp thoi Assigning Parameters, nhp gi tr 1 cho hng value ct value,sau nhp ok.

Lc ny trn hp thoi Edit Action xut hin tag START mang gi tr 1, tip theonhp p vo SetTagBit lin kt thm tag na cho nt nhn START


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Hp thoi Assigning Parameters xut hin, dng Tag _Name chn tag STOP vgn gi tr 0 cho tag ny ri nhp ok.

Khi trong hp thoi Edit Action xut hin thm tag STOP mang gi tr 0nhp ok, bng thng bo hin ra, chn Yes ng i m ngun > nhn ok.

biu tng chuyn thnh mu xanh .Sau khi kt ni xong


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Lun Vn Tt Nghip Trang: 102 thit lp thuc tnh cho nt nhn STOP, lm tng t nh nt START, nhngcc gi tr s ngc vi nt nhn START. nt nhn STOP, th gn tag STOPmang gi tr 1 v tag START mang gi tr 0.

5.4 Chy m phng

Sau khi thit lp xong thuc tnh cho cc i tng trn m hnh, tr li giao dinGraphic Designer. Trn thanh thuc tnh chn biu tng Runtime tin hnhm phng v gim st.

Mn hnh m phng Runtime xut hin, ta tin hnh m phng v gim trn mnhnh ny.

CHNG 4:KT LUN V HNG PHT TRIN TI

1. Kt lun

Qua lun vn ny, gip em c thm c nhiu kin thc b ch v thct v b sung thm nhng kin thc hc nh trng. Vi ti ny em lm c:


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Dng S7-200 iu khin ng c bc.Kt ni c PLC S7-200 vi WinCC thng qua phn mm S7-200 PCAccess.

Thit k c chng trnh iu khin v gim st trn m hnh thc tthng qua my tnh PC.

2. Hng pht trin ti

ng dng ca PLC trong thc t l rt ln em tin tng rng trong tnglai lnh vc ny ngy cng pht trin hn na. Nhng phn mm lp trnh gimst kt hp vi PLC iu khin cc qu trnh cng ngh s pht trin ngycng rng ri trong thc t.

Do yu cu ca ti ny s dng PLC S7-200 kt ni vi WinCC,nhng trong thc t pht trin nhng phn mm lp trnh cao hn nh: S7-

300, S7-400V vy nu c iu kin em s pht trin ti ny dng PLCS7-300 kt ni trc tip vi WinCC m khng cn thng qua phn mm S7-200 PC Access.

Do cn hn ch v kinh nghim thc t, ti liu tham kho, thi gian thchin, nn tp lun vn khng th trnh khi nhng thiu st, rt mong qu thyc gp bi lun vn c hon thin hn. Nu cc bn sinh vin kha sauc lm ti ny th pht trin tt hn nh:

- Thit k giao din hnh nh tht hn, hot ng ging m hnh tht.

- Dng PLC iu khin tc ng c bc nh mong mun.

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