Vega VEGABAR 53, Руководство по эксплуатации, Страница: 50 / 60

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PA - OUT value of the FB 1 after scaling
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T emperature
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PA - OUT value of the FB 2 after scaling
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A dditional C yclic V alue
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A dditional cyclical value ( depending on the source )
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F ree P lace
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T his module must be used if a value in the data telegram of the cyclical data tra ffi c
should not be used ( e . g . replacement of temperature and A dditional C yclic V alue )
M ax . three modules can be active . B y means of the con fi guration software of the P ro fi bus
master , you can determine the con fi guration of the cyclical data telegram with these modules .
T he procedure depends on the respective con fi guration software .
T ip :
T he modules are available in two versions :
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S hort for P ro fi bus masters that only support one " F ormat "
byte , e . g . A llen B radley
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L ong for P ro fi bus master only supporting the " I denti fi er
F ormat " byte , e . g . S iemens S 7 - 300 / 400
E xamples of telegram con fi guration
I n the following you will see how the modules can be combined and how the appendant data
telegram is structured .
E xample 1 ( standard setting ) with pressure value , temperature value and additional cyclical
value :
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AI ( PA - OUT )
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T emperature
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A dditional C yclic V alue
Byte-No.
1 2 3 4 5 6 7 8 9 10 11 12 13 14
15
Format
Value
IEEE-754-
Flieskommazahl
PA-OUT
(FB1)
Status
Status
(FB1)
IEEE-754-
Flieskommazahl
Temperature
(FB2)
IEEE-754-
Flieskommazahl
Additional Cyclic
Value
Status
Status
(FB2)
Status
Status
F ig . 17 : T elegram con fi guration example 1
E xample 2 with pressure value and temperature value without additional cyclical value :
l
AI ( PA - OUT )
l
T emperature
l
F ree P lace
50 VEGABAR 53 - P ro fi bus PA
S upplement
28250
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EN
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051004