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Instruction Manual
Eng
lish
4.3 Data Transfert via Explicit Messaging
The data transfer via Explicit Messaging is made through accessing the
Drive parameters.
4.3.1 Drive Parameter Access
For reading/writing the drive parameters the Drive Parameter Access object
is defined with the following characteristics:
- Class ID: 66h.
- Class Attribute: Revision
- Instance Attribute:
This instance does not provide any attribute.
4.3.1.1 Class Code
Class code: 66 hex
4.3.1.2 Class Attributes
Number
Need in
implementation
Access Rule
Name DeviceNet
Data Type
Description
of Attribute
Semantics of
values
1
Optional
Get
Revision
UINT
Revision of
this object
dn345
4.3.1.3 Instance Attributes
Number
Need in
implementation
Access Rule
Name DeviceNet
Data Type
Description
of Attribute
Semantics of
values
dn350
This instance does not provide attributes
4.3.1.4 Common Services
This object has no common services.
4.3.1.5 Object Specific Services
Class Instance
32
hex
n/a Required
Get_Drive_Value
Read drive parameter value
33
hex
n/a Required
Set_Drive_Value
Writes drive parameter value
dn355
Service
Code
Need in
implementation
Service Name
Description of Service
4.3.1.6 Behavior
This object is the interface between the DeviceNet network and all Drive
parameters. The access to the Drive parameter is carried out by the param-
eter 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
composed for reading/writing Drive parameters.
