Xylem SI Analytics TitroLine 6000 - Page 78

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Chapter 6 Data Communication via RS-232 and USB-B interface
6 Data Communication via RS-232- and USB-B interface
6.1 General Information
7KHEXUHWWH7LWUR/LQH
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KDVWZRVHULDO56&LQWHUIDFHVWRFRPPXQLFDWHGDWDZLWKRWKHUGHYLFHV%\
PHDQVRIWKHVHWZRLQWHUIDFHVLWLVSRVVLEOHWRRSHUDWHVHYHUDOGHYLFHVRQRQHFRPSXWHU3&LQWHUIDFH
,QDGGLWLRQWRWKDWWKH7LWUR/LQH
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DOVRKDVDQDOWHUQDWLYHO\86%%LQWHUIDFHZKLFKFDQRQO\EHXVHGWR
FRQQHFWD3&
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$WWKH56&LWLVSRVVLEOHWRFRQQHFWDGGLWLRQDOGHYLFHV'DLV\&KDLQ&RQFHSW
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3,1DVVLJQPHQWRIWKH56&LQWHUIDFHV
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6.2 Chaining multiple devices —“Daisy Chain Concept“
,QRUGHUWRDFWLYDWHVHYHUDOGHYLFHVLQDFKDLQLQGLYLGXDOO\HDFKGHYLFHPXVWKDYHDQRZQGHYLFHDGGUHVV)RU
WKLVLW LVDWILUVWQHFHVVDU\WRHVWDEOLVKDFRQQHFWLRQIURPWKH FRPSXWHUWRWKH56&LQWHUIDFH RIWKH ILUVW
GHYLVHLQWKHFKDLQE\PHDQVRID56&GDWDFDEOHHJ7\SH1R7=:LWKWKHDGGLWLRQDO56&
GDWD FDEOH 7\SH 1R 7= WKH 56& LQWHUIDFH RI WKH ILUVW GHYLFH LV FRQQHFWHG ZLWK WKH 56&
LQWHUIDFHRIWKHVHFRQGGHYLFH$WLQWHUIDFHRIWKHVHFRQGGHYLFHLWLVSRVVLEOHWRFRQQHFWDQDGGLWLRQDOGHYLFH
7KH7LWUR/LQH
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FDQDOVREHFRQQHFWHGYLD86%FDEOH7=W\SH$0±W\SH%0P,WLV
DOVRSRVVLEOHWRFRQQHFWWKH7LWUR/LQH
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YLD86%FDEOH7=W\SH$086%W\SH%0P
WRD86%LQWHUIDFHRID3&7RDFFRPSOLVKWKLVFRQQHFWLRQDGULYHUKDVWREHLQVWDOOHGRQWKH3&7KHQWKH86%
%LQWHUIDFHWDNHVRYHUWKHIXQFWLRQRIWKH56LQWHUIDFH
7KHDGGUHVVDOZD\VFRQVLVWVRIWZRFKDUDFWHUVHJDGGUHVVRIWKHWZR$6&,,FKDUDFWHUV!DQG!7KH
DGGUHVVHVFDQEHVHWIURP 00 WR15LH SRVVLELOLWLHV ,W PXVW EHHQVXUHG WKDWWKH GHYLFHV LQDFKDLQKDYH
GLIIHUHQW DGGUHVVHV ,I D GHYLFH LV DGGUHVVHG ZLWK LWV DGGUHVV WKLV GHYLFH ZLOO SURFHVV WKLV FRPPDQG ZLWKRXW
VHQGLQJLWWRDQRWKHUGHYLFH7KHUHSO\WRWKHFRPSXWHUKDVDOVRDQRZQDGGUHVV7KHDGGUHVVHVDUHDOORFDWHGDV
GHVFULEHGLQChapter 5.3
7KH EXUHWWH 7LWUR/LQH
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  UHFHLYHV FRPPDQGV IURP D 3& DW WKH LQWHUIDFH 186%%LIWKHFRPSXWHU
NQRZVWKHDGGUHVV,WDOVRVHQGVWKHDQVZHUYLDWKLVLQWHUIDFH,IWKHDGGUHVVRIWKHLQFRPLQJFRPPDQGGRHVQRW
PDWFKWKHGHYLFHDGGUHVVWKHFRPSOHWHFRPPDQGZLOO EHIRUZDUGHGWRLQWHUIDFH2,QWHUIDFHLVFRQQHFWHGWR
LQWHUIDFH RI DQRWKHUGHYLFH 7KLV GHYLFHFKHFNVWKHDGGUHVV DV ZHOODQG UHDFWV WRWKH FRPPDQG DV WKHILUVW
7LWUR/LQH
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GLGEHIRUH
$OOLQIRUPDWLRQGDWDVWULQJVZKLFKDUULYHDWLQWHUIDFHRI WKHEXUHWWH7LWUR/LQH
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ZLOO LPPHGLDWHO\EH
VHQGWRWKHFRPSXWHUYLDLQWHUIDFHRU86%%LQWHUIDFH7KXVWKHFRPSXWHUUHFHLYHVWKHGDWDRIDOOGHYLFHV,Q
SUDFWLFHLWLVSRVVLEOHWRFRQQHFWXSWRGHYLFHVWRRQHFRPSXWHU3&LQWHUIDFH
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6.3 Instruction Set for RS-Communication
7KHFRPPDQGVFRQVLVWRIWKUHHSDUWV$GGUHVV WZRGLJLWDD HJ
 &RPPDQG  HJ'$
 9DULDEOHLIQHFHVVDU\ HJ
 DQGHQGRIFRPPDQG &5!/)!
Every FRPPDQG PXVWEH FRPSOHWHG ZLWK WKH$6&,,  VLJQ &5! DQG /)! &DUULDJH 5HWXUQ DQG /LQH )HHG
2QO\LIWKHUHVSHFWLYHDFWLRQKDVHQGHGWKHDQVZHUVZLOOEHUHWXUQHGWRWKHFRPSXWHU
([DPSOH 7KHFRPPDQGWRGRVHPOVKDOOEHVHQWWRWKHEXUHWWH7LWUR/LQH
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ZLWKWKHDGGUHVV
7KHFRPPDQGFRQVLVWVRIWKHFKDUDFWHUV'$&5/)!
,QGHWDLO   'HYLFHDGGUHVV
 '$  'RVDJHFRPPDQGZLWKILOOLQJDQG]HURSRLQWVRIWKHGLVSOD\
   9ROXPHLQPOWREHGRVHG
 &5/)!  &RQWUROFKDUDFWHUDVFRPPDQGHQG
PIN-No. Meaning / Description
 7[''DWDRXWSXW
 5[''DWDLQSXW
 'LJLWDOPDVV
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