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BI 5

KT NI TRUYN THNG, GIM ST V IU KHIN S DNG

PROFINET S7 - 1200

MC TIU

- Gip sinh vin nm bt cc c trng c bn ca mng truyn thng Profinet S7-1200.

- Rn luyn cho sinh vin k nng cu hnh mng truyn thng Profinet S7-1200

dng cc thit b Siemens.

NI DUNG CHNH

5.1. Gii thiu chun truyn thng Profinet S7 1200

Mong mun c mt tiu chun truyn thng trn mt mng cho cc ngnh cng

nghip, c kh nng chun on rng v cc chc nng dch v rng khp mng li

dn ti s gia tng ca vic s dng Ethernet cng nghip. T chc PROFIBUS,

PROFINET quc t (PI) cung cp mt chun truyn thng ton din thng qua

Ethernet cng nghip p ng mi yu cu, cu tr li l PROFINET.PI pht

trin 1 chun qua cc kinh nghim thu c t nhiu nm pht trin ca Profibus

thch hp vi Ethernet cng nghip cho cc yu cu chuyn bit trong cng nghip.

Kt qu chnh l Profinet, mt chun cng nghip ton din da trn chun Ethernet

cng nghip cho truyn thng m, c lp vi cc nh cung cp. PROFINET p ng

tt c cc yu cu s dng Ethernet tt c cc cp v trong mi ng dng t ng

ha. iu ny lm cho PROFINET tr nn rt linh hot, ng tin cy v thit thc

trong mi trng cng nghip.

CPU S7-1200 c mt cng Profinet c tch hp. Cc giao thc ng dng sau y

c h tr bi CPU S7-1200:

- TCP (truyn thng tin v m bo tin cy).

- ISO on TCP.

- UDP (gi thng tin nhng khng bo m n c ch).

Giao thc TCP c m t theo chun RFC 793, truyn d liu tin cy v theo th t.

Giao thc ISO on TCP c m t theo chun RFC 1006. S dng a ch IP l

192.168.x.x v subnet mask l 255.255.255.0. Giao thc UDP c m t theo chun

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RFC 768, c s dng gi cc bc in ngn m bo v mt thi gian thc,

nhng khng m bo d liu c n c ch hay khng.

5.2. Kt ni truyn thng, gim st v iu khin s dng Profinet S7 1200

Kt ni trc tip: s dng kt ni trc tip khi ta ang s dng mt thit b lp trnh,

HMI hay mt CPU khc c kt ni n mt CPU ring l.

Kt ni mng: s dng cc truyn thng mng khi ta ang kt ni vi hn hai thit b

(v d cc CPU, HMI, cc thit b lp trnh, v cc thit b khng phi ca Siemens).

Dng b chuyn mch Ethernet 4 cng CSM 1277 ca Siemens.

Hnh 5.1. Thit b lp trnh c kt ni n CPU S7-1200.

Hnh 5.2. Kt ni HMI-CPU S7-1200

Hnh 5.3. Kt ni trc tip mt CPU S7-1200 kt ni vi mt CPU S7-1200 khc

Hnh 5.4. Kt ni mng c nhiu hn 2 thit b c kt ni vi nhau, bng cch s

dng mt b chuyn mch Ethernet CSM1277.

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5.3. Thc hnh

5.3.1. Gii thiu m hnh truyn thng Profinet S7 1200

My tnh kt ni vi PLC v HMI bng 1 b chuyn mch (Switch). Thng qua vic

lp trnh bng phn mm, analog s c xut ra ng PQWY hoc PQWY+2 (trn

m hnh) dng iu khin bin tn.

Hnh 5.5. S truyn thng v cch kt ni bin tn vi ng c theo kiu analog.

S ni dy ca m hnh th nghim:

Hnh 5.6. S ni dy ca HMI v bin tn.

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Hnh 5.7. S ni dy ca CPU S7-1200.

Ghi ch :

- L M : Ngun cung cp 220 VAC

- L+ M : Ngun cung cp 24 VDC

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5.3.2. Cc bc c bn cu hnh truyn thng Profinet S7 1200

Sau khi cu hnh cho CPU c gii thiu bi 1, bi hc ny chng ta s cu hnh

cho cc ng vo/ra m rng v cch khai bo mn hnh HMI.

Vic ly cc module m rng v mn hnh HMI c tm gn trong 4 bc nh sau:

Bc 1: Ln lt ly cc modul m rng theo th t sau:

- Modul giao tip 422/485 CM1241 (6ES7241-1CH30-0XB0).

- Modul 8DI 1221 (6ES7221-1BF30-0XB0).

- Modul 16DQ 1222 (6ES7222-1BH30-0XB0.

- Modul 4AI (6ES7231-4HD30-0XB0).

- Modul 2AQ (6ES7232-4HB30-0XB0).

Lu : B ngun v bin tn khng phi l module m rng nn khng cn khai bo

trong phn mm Tia Portal.

Thc hin vic ly module

giao tip bng cch ko th.

Thc hin vic ly module

m rng ng vo DI

bng cch ko th.

Thc hin vic ly cc module cn li.

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Ng vo analog l

13 bits v ng ra

analog l 14 bits.

Lu : Khi download xung m hnh, nu cu hnh sai module no th n bo trng

thi module s nhp nhy mu v ta cn kim tra li m module .

Bc 2: Khai bo mn hnh HMI KTP600 Basic color PN.

Chn vo Devices & network vo Network view, sau ko mn hnh HMI vo

vng lm vic. Thc hin cc bc nh hnh v sau:

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Bc 3: Thit lp kt ni PLC v HMI.

Kt qu: Thnh lp c 1 kt ni PN/IE.

Bc 4: nh a ch cho mn hnh HMI.

Click p vo ch kt ni Ethernet nh hnh sau:

t a ch tng ng vi a ch c trn m hnh v subnet mask phi trng lp vi

PLC.

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5.3.3. Bi tp thc hnh s 1

a. Yu cu

Chnh gi tr Analog bng bin tr v hin th gi tr Analog. Kim chng bng cch

o trn ng h.

b. Cc bc thc hin:

Bc 1: Xem a ch ca cc khi m rng.

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Bc 2:Vit chng trnh.

Bc 3: iu chnh bin tr v bn tri ht c trnh hin tng qu dng trc khi

thc hin u dy nh hnh sau.

5.3.4. Bi tp thc hnh s 2

a. Yu cu

Lp trnh cho mn hnh HMI, nhn nt ON/OFF trn mn hnh th n sng/tt.

b. Cc bc thc hin:

Bc 1: Vit chng trnh bn PLC nh sau

Lu : S dng bin nh M cho ng vo

ON/OFF.

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Bc 2: Thit lp cc nt nhn v n trn HMI

Vo Add new screen thit lp 1 dao

din mi.

Ly cc n v nt nhn trong Basic

object ca Toolbox.

Sinh vin tham kho thm cc trng thi

n v nt nhn m Siemens cung cp

trong th vin Global libraries.

Giao din sau khi thit k s ging nh hnh sau:

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Bc 3: Thit lp cc trng thi cho nt nhn iu khin n.VD i vi nt ON.

Thit lp trng thi cho

nt ON bng lnh

Setbit WhileKey

Pressed

C ngha l khi ta nhn

nt ON, bit M10.0=1

Sinh vin tham kho

thm cc trng thi

SetBit v ReSetBit.

Chn Edit bits

sau chn lnh

nh trong hnh

v

Bc 4: t Tag cho cc nt nhn.

Thc hin theo cc bc trong hnh v sau:

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Lm tng t bc 3 v bc 4 i vi nt OFF.

Bc 5: Thit lp trng thi cho n.

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Bc 6: t tag v thit lp cc trng thi khi n sng/tt

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Bc 7: Compile v Download chng trnh.

Thc hin vic

Compile v Download

cu hnh PLC xung

m hnh.

Thc hin vic Compile

chng trnh HMI.

Thc hin vic

Download chng

trnh HMI xung m

hnh.

Lu : Khi download

chng trnh ca HMI

xung mn hnh, ta

phi bm nt Transfer

(trn mn hnh) hoc

thot ra chng trnh

hin ti ri bm

Transfer. Nu khng

my s b treo.

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5.3.5. Bi tp thc hnh s 3

a. Yu cu

S dng mn hnh HMI iu khin ng c 3 pha thng qua bin tn G110, v

th. Nhp gi tr vo mn hnh HMI iu khin tc ng c. Nhn Start th ng

c chy v n sng, Stop th ng c dng v n tt.

b. Cc bc thc hin:

Bc 1: t Tag v vit chng trnh mu nh sau.

Bc 2: Thit k giao din HMI v t Tag cho th.

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Bc 3: t Tag cho cc nt nhn v ng vo analog v Exit l Stop Runtime.

Chng ta c th thay i s lng cc

ch s nhp vo cng nh gi tri thp

phn hay nh phn khung Format.

Bc 4: Download chng trnh v thc hin u dy bin tn nh hnh sau.

Reset v thng s nh my.

P0010=30

P970=1

Ci t cho bin tn chy ch chy ngun ngoi.

P700=2

P1000=2

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5.3.6. Bi tp lm thm

a. Yu cu 1: Vit chng trnh iu khin tt c cc Led trn m hnh sng dn

b. Yu cu 2:

S dng mn hnh HMI iu khin ng c 3 pha thng qua bin tn G110, gii

hn thng s nhp vo t mn hnh, v th. S dng lnh Normal v Scale.

c. Yu cu 3:

Vit chng trnh lu kho sn phm, khi 9 sn phm th bng chuyn dng v ng

c tt.

d. Yu cu 4: Thc hin cc chng trnh con theo bc sau:

- FC1: iu khin tt c led sng/tt.

- FC2: iu chnh analog t bin tr hin th gi tr ln HMI.

- FC3: iu khin n giao thng.

- FC4: iu khin tc ng c.

- FC5: m sn phm trn bng chuyn.

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