53
10 Supplement
VEGABAR 54 • Probus PA
36729-EN-130321
– This module must be used if a value should not be used in the data telegram of the cyclical
data trac (e.g. replacement of the temperature and Additional Cyclic Value)
A maximum of three modules can be active. By means of the conguration software of the Probus
master you can determine the conguration of the cyclical data telegram with these modules. The
procedure depends on the respective conguration software.
Tip:
The modules are available in two versions:
•
Short for Probus master supporting only one "Identier Format" byte, e.g. Allen
Bradley
•
Long for Probus master only supporting the "Identier Format" byte, e.g. Siemens
S7-300/400
Examplesoftelegramconguration
In the following you will see how the modules can be combined and how the appendant data tel-
egram is structured.
Example 1 (standard setting) with pressure value, temperature value and additional cyclical value:
•
AI (PA-OUT)
•
Temperature
•
Additional Cyclic Value
1234 567891011121314
Format
Value
IEEE-754-
Floating point value
PA-OUT
(FB1)
Status
Status
(FB1)
IEEE-754-
Floating point value
Temperature
(FB2)
IEEE-754-
Floating point value
Additional Cyclic
Value
Status
Status
(FB2)
Status
Status
Fig. 25: Telegram conguration example 1
Example 2 with pressure value and temperature value without additional cyclical value:
•
AI (PA-OUT)
•
Temperature
•
Free Place
1234 5678910
Format
Value
IEEE-754-
Floating point value
PA-OUT
(FB1)
Status
Status
(FB1)
IEEE-754-
Floating point value
Temperature
(FB2)
Status
Status
(FB2)
Fig. 26: Telegram conguration example 2
Example 3 with pressure value and additional cyclical value without temperature value:
•
AI (PA-OUT)
•
Free Place
•
Additional Cyclic Value
Byte-No.
1234 5 6789 10
Status
Status
Status
Status
(FB1)
IEEE-754-
Floating point value
PA-OUT
(FB1)
IEEE-754-
Floating point value
Additional Cyclic
Value
Format
Value
Fig. 27: Telegram conguration example 3
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