GE Industrial Solutions 6KCV301DNET - Manual (Page 21)

6KCV301DNET
21
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Interface card DeviceNet
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3.2.2.6.1 Write DGF Parameter
In this example the writing of a DGF parameter is reported; cases of positive
and wrong writing are distinguished.
3.2.2.6.1.1 Write DGF Parameter Request
The data frame for writing a DGF parameter is composed as follows:
DATA TYPE FIELD VALUE MEANING
Byte
Service
Code
33hex
Set DGF Parameter -
Object Specific Service.
Class ID 67hex
DGF Parameter Access
Class Object.
Instance
ID
XXXX
DGF Parameter Index in
format Low byte-High
byte.
Data Type
2)
XX
DGF specific data type
code.
N/U 00
Not used; has to be set to
zero.
XX
Low byte-Low word DGF
parameter value.
XX
High byte-Low word DGF
parameter value.
XX
Low byte-High word DGF
parameter value.
XX
High byte-High word
DGF parameter value.
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VALUE
See Note 1)
Byte
1) Byte or Word depending on the type of allocation executed by the Master.
2) For codes see DGFC- manual.
3.2.2.6.1.2 Write DGF parameter - Reply OK
If the DGF parameter is written correctly, the response is:
DATA TYPE FIELD VALUE MEANING
Byte
Service
Code
33hex OR
80hex
Set DGF Parameter
Reply code- Object
Specific Service.
Word Result 0
Result field equal to zero
means writing correctly
executed.
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