Communication Interfaces; Memory Areas - WAGO I/O System 750 Series Manual

3.1.5.1 Communication Interfaces

For a data exchange, the DeviceNet fieldbus coupler is equipped with two inter-
faces:
•
•
Data exchange takes place between the fieldbus master and the bus modules.
Access from the fieldbus side is fieldbus specific.

3.1.5.2 Memory Areas

The coupler uses a memory space of 32 bytes for the physical input and 32
bytes for the physical output data.
fieldbus
Fig. 3-9: Memory areas and data exchange for a fieldbus coupler
The coupler process image contains the physical data of the bus modules in a
storage area for input data and in a storage area for output data (32 bytes each).
1 The input module data can be read from the fieldbus side.
2 In the same manner, writing to the output modules is possible from the
WAGO-I/O-SYSTEM 750
DeviceNet
the interface to fieldbus (-master) and
the interface to the bus modules.
fieldbus side.
Fieldbus Coupler 750-346
fieldbus coupler
memory area
for input data
1
input
modules
memory area
for output data
2
output
modules
Fieldbus Coupler • 51
I/O modules
I
O
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