WAGO-I/O-SYSTEM 750
Function Description
67
750-306 DeviceNet
TM
Fieldbus Coupler
Manual
Version 2.0.0
7.3.1
Communication Interfaces
Basically, the fieldbus coupler has two interfaces for exchanging data:
•
Interface to the fieldbus (fieldbus master)
•
Interface to the I/O modules.
Data is exchanged between the fieldbus master and the I/O modules.
Access from the fieldbus side to the data is fieldbus specific.
7.3.2
Memory Space
The fieldbus coupler’s process image contains the physical data for the bus
modules.
These have a value of 0 ... 255.
1
The input module data can be read from the fieldbus side.
2
Likewise, data can be written to the output modules from the fieldbus side.
Figure 38: Memory Areas and Data Exchange