Fairbanks X SERIES PR 5220 ETHERNET TRANSMITTER - Manual (Page 79)

Section 7: Fieldbus Interface
05/11 80 51209 Revision 2
7 Fieldbus Interface
7.1 Fieldbus Interface Protocol
The interface works with an 8-byte write window and an 8-byte read window. The fieldbus
exchanges its data cyclically with each slave. This means: In each cycle, 8 bytes are written and 8
bytes are read, also if the data content is unchanged.
The fieldbus protocol ensures the data transport between the fieldbus master and the 2 x 8-byte
data windows.
The interface protocol runs under the fieldbus and manages the access to a multitude of different
data.
Fieldbus Interface
Data and Functions with PR 5220
- Weight data
- Weight status
- Limit values
- Digital inputs
- Digital outputs
- Analog output
8-Byte
Write Window
8-Byte
Read Window
Interface
Protocol
rotocol