Siemens SITRANS LG250 Operating Instructions Manual page 81

Fig. 38: SITRANS LG250: Block diagram with AI FB 1 ... AI FB 3 OUT values
TB Transducer Block
FB 1 ... FB 3
Module of the PA sensors
For the cyclic data traffic, SITRANS LG250 provides the following modules:
•
AI FB1 (OUT)
– Out value of the AI FB1 after scaling
•
AI FB2 (OUT)
– Out value of the AI FB2 after scaling
•
AI FB3 (OUT)
– Out value of the AI FB3 after scaling
•
Free Place
– This module must be used if a value in the data telegram of the cyclical data traffic should not
be used (e.g. replacement of temperature and 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:
•
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
PBD-51041053
Function Block
The modules are available in two versions:
SITRANS LG250 - Operating Instructions
81