Adding Data Instance Size
In the Fieldbus Settings, the user can set Data instance size, which is a general value used for size span calculations. An instance defines where should the first byte of the acyclic data be read.
This is possible only for the following Fieldbus types:
EtherNet IP
DeviceNet
Profinet IO
Profibus
CC Link IE
Select a controller in the Plant structure
.
Go to Fieldbus and SoftPLC tab
.
Select the Overview sub-tab.
Enter the value in the Data instance size field.
![](../../../assets/img/ac-note-icon-2.png)
The value for Data instance size defines how big an instance should be. This is general for all instances in the acyclic fieldbus mapping with virtual stations. Default: 64, Maximum: 255 (256 bytes).
![](../../../assets/img/ac-note-icon-2.png)
The size span calculation for CC link is done automatically.
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