Fieldbus Coupler/Controller • 49
Fieldbus Coupler 750-306
WAGO-I/O-SYSTEM 750
DeviceNet
3.1.5.3 Addressing
3.1.5.3.1 Fieldbus Specific
Once the supply voltage is applied, the Assembly Object maps data from the
process image. As soon as a connection is established, a DeviceNet-Master
(Scanner) can address and access the data by "Class", "Instance" and "Attrib-
ute".
Data mapping depends on the selected Assembly Instance of the static Assem-
bly.
Further information
The Assembly Instances of the static Assembly are described in chapter
5.5.1.1 "Assembly Instance".
I
O
1
2
Application
Object
Assembly
Object
Connection
Object
Input-
Assemly
Output-
Assemly
Producer
Consumer
memory area
for input data
I/O modules
input
modules
word 255
output
modules
word 0
word 255
fieldbus
master
word 0
memory area
for output data
Fieldbus coupler
Fig. 3-1: Fieldbus specific data exchange for a DeviceNet fieldbus Coupler
g012531e
Note
For the number of input and output bits or bytes of the individual I/O modules,
please refer to the corresponding I/O module description.
Note
A process image restructuring may result if a node is changed or extended. In
this case the process data addresses also change in comparison with earlier
ones. In the event of adding a module, take the process data of all previous
modules into account.
