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3.2.1.1 Class code
3.2.1.2 Class attributes
Need in
Number
implementation
1
Optional
3.2.1.3 Instance Attributes
Need in
Number
implementation
3.2.1.4 Common Services
This object has no common services.
3.2.1.5 Object Specific services
Service
Code
32
hex
33
hex
3.2.1.6 Behavior
This object is the interface between the DeviceNet network and all Drive parame-
ters. The access to the Drive parameter is carried out by the parameter index; if the
parameter does not exist or may not be accessed for any reason (for example: try
to write a read only parameter) an error code will be returned.
Drive parameters in text format cannot be accessed.
In the following are repeted patterns of how the data frame of data has to be com-
posed for reading/writing Drive parameters.
3.2.1.6.1 Write Drive Parameter
In this example the writing of a Drive parameter is shown; the cases of positive or
wrong writing are distinguished.
3.2.1.6.1.1 Write Drive Parameter Request
The data frame for writing a drive parameter is composed as follows:
——————
SBI-DN
Class Code: 66hex
Access Rule
Get
Revision
Access Rule
This instance does not provide attributes
Need in
implementation
Service Name
Class Instance
n/a
Required Get_Drive_Value
n/a
Required Set_Drive_Value
Interface Board DeviceNet
DeviceNet
Description
Name
Data Type
of Attribute
Revision of
UINT
this object
DeviceNet
Description
Name
Data Type
of Attribute
Description of Service
Read drive parameter value
Writes drive parameter value
——————
Semantics of
values
dn345
Semantics of
values
dn350
dn355
19
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