VEGA VEGACAL 67 Profibus PA - Manual (Page 43)

43
10 Supplement
VEGACAL 67 • Profibus PA
31759-EN-130917
pF % Lin%
Min-Max
adjustment
Linearization
PROFIBUS PA-output
Primary
Value
Secondary
Value 2
Secondary
Value 1
Target
Mode
Failure
mode
Alarms Scaling
Source for
scaling
t
i
Damping
Sensor
characteristics
PA-Out
TB
FB
Select additional cyclic
value
Fig. 21: VEGACAL 67: Block diagram with AI (PA-OUT) value and additional cyclical value
TB Transducer Block
FB Function Block
Module of the PA sensors
For the cyclic data traffic, VEGACAL 67 provides the following modules:
•
AI (PA-OUT)
– PA-OUT value of the FB1 after scaling
•
Additional Cyclic Value
– Additional cyclical value (depending on the source)
•
Free Place
– 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 Additional Cyclic Value)
A maximum of 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.
Note:
The modules are available in two versions:
•
Short for Profibus master supporting only one "Identifier Format" byte, e.g. Allen
Bradley
•
Long for Profibus master only supporting the "Identifier Format" byte, e.g. Siemens
S7-300/400
Examples of telegram configuration
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 distance value and additional cyclical value:
•
AI (PA-OUT)
•
Additional Cyclic Value