Bao Cao Mang PLC (2)

7/31/2019 Bao Cao Mang PLC (2)

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BAO CAO MANG PLC

BAI:

TRUYN TNHIEU GIA MASTER V SLAVER

CH B TRONG CUA S7-200

Bo Giao duc va ao taoTrng ai hoc S pham Ky Thuat TP HCM

Nhom thc hien:Nguyen Thanh Luan

06118042

Bui Phung Phuc Nguyen06118043


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NOI DUNG BAO CAO

Gii thieu

1. Khai niem mng AS_I

2. Gii thiu v MATER v

SLAVER

Truyndliugia Master v Slave

Vd v chng trnh


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GII THIU

CPU 221 CPU 224xp CPU 226


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Mng AS_I

H thng mng AS-I hay giao tip actuator/sensor l h thng ktni cho cp thp nht trong h thng t ng ha .Cc actuator vsensor c ni vi trm h thng t ng qua bus d liu AS


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Mng AS_I

S kt ni mng dng mng AS_I


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Mng AS_I

Hot ng ca mng AS-I

-K thut truyn Master Slaver ch c mt Master trn mng.Master ny hi vng tt c cc Slaver v i tr li

-a ch in t : mi Slaver c mt a ch ring ,ch xut hin 1

ln trong mng- Hot ng tin cy v linh hot dng k thut truyn tc cao.Master gim st in p trn mng ,nu pht hin li s bothng ip v PLC


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Mng AS_I

c tnh vt l :

S dng cp 2 dy va truyn d liu va cp ngun. thun tin cho vic kt ni ngi ta s dng thut nxuyn cch in ni cp


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Mng AS_I

Chu k qut ca mng AS-I

- 5 ms i vi cc Slave chun

- 10 ms i vi ch m rng

Kh nng kt ni v s lng Slave

- ch chun : 124 vo /124 ra ; 31 slave

- ch m rng :248 vo/ 186 ra ; 62 slave


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AS_I MASTER

1. AS_I Master

AS-I Master ng vai tr kim sot ton b hot ng ca h thngtrong mng.Cc loi S7-300,S7-200 .. c th lm Master trongmng . S7-200 kt hp vi CP 243-2 lm Master trong mng


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AS_I MASTER

CP 243-2 (6GK1 243-2AX01-0AX0)


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AS_I MASTER


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SLAVE

ngha cc n Led trn CP 243-2


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SLAVE

2. Slave


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SLAVE


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SLAVE


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TRUYN D LIU GIA MASTER va SLAVE

1. Giao tip vi S7-200

- CP 243-2 chim 2 khe module m rng lin tip ca S7-200

- Module s 8DI /8DO

- Module tng t 8AI/8AO


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Module s ca CP 243-2 cha 4 thanh ghi :

- Thanh ghi nhn dng ,8 bit

- Thanh ghi li ,8 bit

- Thanh ghi ng vo 8DI (Byte trng thi ca CP 243-2)

- Thanh ghi ng ra 8 DO (Byte iu khin ca CP 243-2)


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ngha ca thanh ghi trng thi :

Bit Gi tr ngha

AS-I-MODE 0 CP 243-2 ch bo v

1 CP 243-2 ch cu hnh

CP_READY 0 CP 243-2 cha sn sng hot ng sau khi bt nguncung cp. S nh gi ca d liu I/O hoc ccthng tin khc t CP cha c cho php.

1 CP 243-2 sn sng hot ng

AS-I_RESP 0/1 Bit p ng i vi giao din lnh AS-I


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ngha ca thanh ghi iu khin :

Bit Gi tr ngha

BS0 BS5 0 63(thp phn)

Cc bit chn bank trong module tng t

AS-I_COM 0/1 Bit cng vic cho giao din lnh AS-I

PLC_RUN 0 Bo cho CP 243-2 bit rng CPU S7-200 ang ch stop.CP 243-2 gi gi tr 0 n tt c cc slave nh phn. Gi tr tng t

truyn ti ng ra ca cc slave s b ngt. CPU S7-200 t ng tgi tr 0 khi chuyn t ch RUN sang STOP

1 Bo cho CP 243-2 bit rng CPU S7-200 ang ch RUN.CP 243-2 gi ni dung ng ra ca thanh ghi 0 n tt c cc AS-I slave.Chng trnh s dng phi t bit ny ln 1 trong sut qu trnhkhi ng.

Khng c t bit PLC_RUN mi mc 1 vi S7-200 hot ng cc chc hthng chng hn nh : cu hnh CPU/ ci t ng ra hoc tc ng ccng ra


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Module tng t ca CP 243-2 gm 4 vng

- Thanh ghi nhn dng ,8 bit

- Thanh ghi li ,8 bit

- 8 Word analog ng vo AI

- 8 Words analog ng ra AO


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Trc khi truy xut d liu ca cc AS_I Slave cn tun th cc

yu cu sau y:- Khng kch hot ng vo ca module analog

- t bit PLC-RUN trong thanh ghi iu khin ln 1

- Xc nh xem CP 243-2 sn sng trao i d liu chabng cch kim tra bit CP-READY trong thanh ghi trngthi.Nu bit CP-READY=1 th CP sn sng lm vic,ngc li ta phi kim tra li


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Vng d liu ng vo ca Slave chun bank 0


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Vng d liu ng vo ca Slave bank 31 (ch B)


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Cu trc chng trnh iu khin mng AS-I

PLC_run=1

START

CP_Ready=1

Chn BankTruy xut d liu

S

S


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V D

Chng trnh v d vic truyn d liu ch B

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Bao Cao Mang PLC (2)