Vega VEGABAR 51 Operating Instructions Manual page 64

10 Supplement
PA-OUT value of the FB2 after scaling
-
Additional Cyclic Value
l
Additional cyclical value (depending on the source)
-
Free Place
l
This module must be used if a value should not be used in the data telegram of the cyclical data
-
traffic (e.g. replacement of the temperature and Additional Cyclic Value)
Max. three modules can be active. By means of the configuration software of the Profibus master,
you can determine the configuration of the cyclical data telegram with these modules. The procedure
depends on the respective configuration software.
Examples of telegram configuration
how the appendant data telegram is structured.
Example 1 (standard setting) with pressure value, temperature value and additional cyclical value:
AI (PA-OUT)
l
Temperature
l
Additional Cyclic Value
l
Byte-No.
1 2
Format
IEEE-754-
Flieskommazahl
Value
PA-OUT
(FB1)
Fig. 28: Telegram configuration example 1
Example 2 with pressure value and temperature value without additional cyclical value:
AI (PA-OUT)
l
Temperature
l
64
Tip:
The modules are available in two versions:
Short for Profibus master supporting only one "Identifier Format"
l
byte, e.g. Allen Bradley
Long for Profibus master only supporting the "Identifier Format"
l
byte, e.g. Siemens S7-300/400
In the following you will see how the modules can be combined and
3 4 5 6
Status
Status
(FB1)
7 8 9
IEEE-754- Status
Flieskommazahl
Temperature Status
(FB2) (FB2)
10 11 12 13
IEEE-754-
Flieskommazahl
Additional Cyclic
Value
VEGABAR 51 • Profibus PA
15
14
Status
Status