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NG DNG PHN MM WINCC IU KHIN H THNG NC
Trong phn ng dng ny hng dn cch ly hnh nh t th vin ha, t thuc tnh
ng, s lin kt gia bin v hnh nh.To bn nc gm hai ng c bm nc vo v vi nguyn l hot ng sau: Khi nhn ntStartn bo xut hin trng thi h thng sn sng lm vic.
- Nu mc nc cao mc 1 cm bin tc ng (qua nt nhn CB1)c hai ng c chy.- Nu mc nc cao mc 2 cm bin tc ng (qua nt nhn CB2)ng c 1 chy.- Nu mc nc y cm bin tc ng (qua nt nhn CB3) ng c1 dng.
Khi nhn ntStoptn bo mt trng thi h thng ngng lm vic.
n IU KHIN BN CHA NCcthchin theo cc bc sau:1. Bc1: M d n mi v t tn IU KHIN BN CHA NC
Nhn Start>Simatic>WinCC>WindowControlCenter5.0. T thanh trnh n, nhpchnFile > New.Hp thoiWinCCExplorer xut hin, chnSingle-User ProjectvnhpOK.
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Hp thoi Create a New Projectxut hin.Ti khung Project Namet tn DIEU_KHIEN_BON_CHUA_NUOC, khungProject Path chn ng dn lu bi tp.
D n mi c tn :DIEU_KHIEN_BON_CHUA_NUOC c m.
2. Bc 2: To tag (to bin)
Ta thit lp hai bin cho hai ng c c tn DC1, DC2 c kiu d liu l kiu nhphn. Bin cho bn cha c tn TankLevel kiu d liu nguyn 16 bit khng du. Hai
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bin cho n bo, hai bin cho cm bin c tn DENBAO1, DENBAO2, CB kiud liu nh phn.
u tin to binDC1bng cch nhp chn mcTag Management>Internal Tag, nhpphiInternal tag, t pop_menu chnNew Tag.
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Hp thoiTagpropertiesxut hin, ti khung Namet tnDC1,khungDatatypechnBinaryTag. Nhp Ok kt thc vic la chn.
Tin hnh tng t to cc binDC2,DENBAO, CB1, CB2 kiu dliuBinaryTag.TankLevelvi kiu d liuSigned 16-bit value. Trn casWinCCExplorerxut hin cc bin va to nh cc hnh di
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3. Bc 3: To hnh nh qu trnh
To File hnh nh Start.pdl:
Trn ca sWinCCExplorer, nhp phi mcGraphics Designer, t menu x xungnhp chnNew picture.
Bn tri ca s WinCCExplorer xut hin File NewPdl0.Pdl, i tn thnhSTART.Pdl bng cch nhp phi chn Rename Picture, hp thoi New Name xut hin,i tn thnh START.Pdl.
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Lc ny bn tri ca s WinCCExplorer gm c file hnh nh va c to.
4. Bc 4: To hnh nh cho file START.Pdl.Nhp p vo file START.Pdl ca s giao din thit k c m. Tin hnhly hnh nh t th vin ra mn hnh. Hnh nh file START.Pdl gm: Bn, 2ng c, n bo, trng I/O, van, ng dn, cc nt nhn v cm bin.
u tin, ly bn Tank1 t th vin, bng cch nhp chn biu tng Librarytrn thanh cng c, hp thoi Library xut hin.
Nhp p Global Libraly chn PlantElements > Tanks > Tank1. Nhp gichut a ra giao din thit k.
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Tng t, nhp mc Siemens HMI Symbol Library 1.2 > Pumps > Chemicalpump2. Nhp gi chut v a Chemical pump 2 ra giao din thit k.
Ly cm bin t mc Siemens HMI Symbol Library 1.2 > Sensors > Tankmeter nhp gi chut v a ra mn hnh.
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Tng t, ly cc van, v ng dn.Ly cc nt nhn t bng i tng Object Palette > Windows Objects >Button, n bo v khung son tho c ly t Standard Objects, a ra giaodin thit k, v ra mn hnh theo kch c mong mun.
Giao din thit k c nh sau:
5. Bc 5: To thuc tnh cho hnh nh To thuc tnh cho Tank1:Trong WinCC, thuc tnh ng ca bn l s thay i mc nc. Do vy, cngn bin cho thuc tnh Fill Level. Nhp phi Tank1, t menu x xung chnProperties.
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Hp thoi Object Properties m ra, t thuc tnh ng cho Tank1, nhpchn thuc tnh Tag Asssignment > Fill Level. ct Dynamic, nhp phi biutng bng n, t menu x xung nhp chn Tag.
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Hp thoi Object Properties xut hin. Nhp chn thuc tnh Miscellaneous >Display Ti ct Static nhp chn Yes, ct Dynamic nhp phi chn Tag nhhnh.
Hp thoi Tags Project xut hin, nhp chn Internal tags > DC1 > OK.
Trn hp thoi Object Properties, thay i tc mc nh nh thuc tnh
ca Tank1. Ti ct curent nhp phi 2s chn Upon change.
To thuc tnh cho ng c 2Thc hin cc bc tng t nh ng c 1, gn bin cho ng c 2 l DC2. To thuc tnh v cu hnh cho cc nt nhno To thuc tnh cho nt nhn START: START l nt dng khi ng
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trng thih thngsn sng hat ng.Trong WinCC, thuc tnh ca nt nhn th hin bng s kin nhp chut, cnt thuc tnh s kin (Events) cho nt nhn.
Nhp phi nt START, t menu x xung nhp chn Properties nhhnh.
Hp thoi Object Properties xut hin, nhp chn Events > Group > Mouse >Press Left. Nhp p dng Press Left bn tri hp thoi.
Hp thoi Edit Action xut hin, nhp chn Internal functions > tag > set >
SetTagBit. Nhp p dng SetTagBit.
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Hp thoi Assigning parameters xut hin, ct Value gn bin bng cchnhp dng Tag_Name, t menu chn Variable selection.
Hp thoi Tags Project m ra, nhp chn Internal tags > DENBAO1 > OK.
hp thoi Assigning parameters, ti dng Value t gi tr 1. Nhp OK ktthc vic la chn.
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Lc ny, trn hp thoi Object Properties ti ct Action mi tn bin i cmu xanh, c ngha mt bin c gn. ng hp thoi kt thc vic la
chn.
Tng t cc bc trn. Hp thoi Tags Project m ra, nhp chn Internaltags > DENBAO2 > OK. hp thoi Assigning parameters, ti dng Value tgi tr 1. Nhp OK kt thc vic la chn. Ta c c hp Edit Action nhsau:
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o To thuc tnh cho nt nhn STOP: Nt dng trng thi hot ng cah thng.To thuc tnh nt STOP c thc hin tng t nh nt START, nhng gitr ca bin t l 0 nh hnh:
o To thuc tnh cho nt nhn CB1: nt nhn tc ng hai ng c hin trnhnh nn bo hiu c hai ng c ang chy.Nhp phi nt CB1, t menu x xung nhp chn Properties nh hnh:
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Hp thoi Object Properties xut hin, nhp chn Events > Group > Mouse> Press Left. Nhp p dng Press Left bn tri hp thoi:
Tng t nh cc bc to nt nhn START. Hp thoi Tags Project m ra,nhp chn Internal tags > DC1 > OK. hp thoi Assigning parameters, ti
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dng Value t gi tr 1. Nhp OK kt thc vic la chn. Lm li tng tvi vi DC1 thay bng DC2. Ta c hp Edit Action nh sau.
o To thuc tnh cho nt nhn CB2: nt nhn tc ng, ng c 1 hin trnhnh nn bo hiu ng c tip tc chy, ng c 2 mt trn hnh nn bo hiungng chyTng t nh cc bc to nt nhn CB1. Gi tr t bin cho tag DC1 l 1 vtag DC2 l 0. Ta c hp Edit Action cho nt nhn CB2 nh sau:
o To thuc tnh cho nt nhn CB3: nt nhn tc ng, ng c 1 mt trn
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hnh nn bo hiu ng c ngng chy.Tng t nh cc bc to nt nhn CB1. Gi tr t bin cho tag DC1 l 0. Tac hp Edit Action cho nt nhn CB3 nh sau:
To thuc tnh cho n bo hiuKhi ng c lm vic n bo nhp nhy, khi ngng lm vic n ht nhpnhy.o To thuc tnh cho DENBAO1:
Nhp phi DENBAO1, t menu x xung chn Properties.
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Hp thoi Object Properties xut hin, nhp chn thuc tnh Fashing >Fashing Background Active. ct Static nhp p chn Yes, trn ct Dynamicnhp phi biu tng bng n, chn Tag.
Hp thoi Tags Project m ra, nhp chn Internal tags > DC1 > OK.
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Trn ct Curent hp thoi Object Properties, tc mc nh 2s.
o To thuc tnh cho DENBAO2:Tng t cc bc nh DENBAO1. Hp thoi Tags Project m ra, nhpchn Internal tags > DC2 > OK.
Trn ct Curent hp thoi Object Properties, tc mc nh 2s.
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t thuc tnh trng vo ra I/O biu th mc nc ca bn, nhp phi chn Properties t menu nh hnh.
Hp thoi Object Properties xut hin, thay i gi tr gii hn nhp chnthuc tnh Limits. Bn tri hp thoi dng Low Limit Value, nhp p ctStatic t gi tr 0. Tng t ti dng High Limit Value t gi tr 100. Nu gitr gii hn khc vi gi tr gii hn ca bn th trng I/O s hin th sai.
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Trn hp thoi Object Properties, nhp chn thuc tnh Output/Input > OuputValue. ct Dynamic nhp phi biu tng bng n, t menu x xung chnTag.
Hp thoi Tags Project xut hin, chn Internal tags > TankLevel > OK.
Lc ny, bng n chuyn sang mu xanh, bin TankLevel c gn.
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Nhp phi 2s chn Upon change nh hnh.
Ngoi ra, biu th thuc tnh nhp nhy khi hot ng, nhp chn thuc tnhFashing > Fashing Background Active, ct Static nhp p chn Yes, ctDynamic c gn bin TankLevel v ct Current nhp chn Upon change nhhnh.
ng hp thoi v nhn SAVElu s thay i.
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6. Bc 6: Chy m phngSau khi to cc thuc tnh ca file nh, tin hnh chy m phng. chy m
phng cc bc tranh trn ca s WinCCExplorer nhp phi biu tng mytnh bn phi ca s nhn chut phi, chnProperties.
Hp thoi computer Properties m ra, Ti khung thuc tnh Window Attributesko thanh trt nhp chn: Title, Maxximize v Adapt picture. Tikhung Start Picture, nhp chn Browse chn bc tranh chy sau khi khi
ngSTART.Pdl.
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Trn giao din m phng, nu nhp nt nhp START, n bo xut hin hthng sn sng lm vic. Nhn nt STOPT n bo mt h thng mt in.
Cm bin tc ng qua nt nhn. Khi mc nc thp cm bin tac ng qua nt
nhn CB1 c hai ng c lam vic. Khi mc nc khong ga bnh cm bintc ng qua nt nhn CB2 lc ny ch cn ng c 1 lm vic. Khi mc nc
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y bnh cm bin tc ng qua nt nhn CB3 ng c 1 ngng chy.
7. Bc 7: Dng b m phng (Simulator) chy m phng.
khi ng b m phng, nhp vo Start trn thanh tc vSimatic/WinCC/ Tool/ Simulator.
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Trong hp thoi ca b m phng, chn tag mun m phng bng cch nhnEdit/New tag.
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Trong hp thoi Project Tags chn TankLevel v nhp OK.Trong phn Properties nhp vo kiu m phng Inc. nhp vo gi tr btu 0 v gi tr kt thc 100.nh du chn active. Sau nhp Lis of Tags/Start Simulation.
