GE Industrial Solutions 6KCV300DVN - Manual (Page 24)

GEI-100431
—————— BYTE ASSIGNMENT ——————
3 24
3.2.1.6.2 Read drive parameter
In this example is shown the reading of a Drive parameter; the cases of positi-
ve or wrong reading are distinguished.
3.2.1.6.2.1 Read Drive Parameter Request
The data frame for the Drive parameter reading is composed as follows:
DATA
TYPE
FIELD VALUE MEANING
Byte
Service
Code
32hex
Get Drive Parameter -
Object Specific Service.
See Note
1)
Class ID 66hex
Drive Parameter Access
Class Object.
See Note
1)
Instance
ID
XXXX
Drive Parameter Index in
format Lowbyte-High
byte.
dn375
1) Byte or Word depending on the type of allocation executed by the Master.
3.2.1.6.2.2 Read drive parameter - Reply OK
If the Drive parameter is read correctly, the response is:
DATA TYPE FIELD VALUE MEANING
Byte
Service
Code
32hex OR
80hex
Get Drive Parameter
Reply code- Object
Specific Service.
Word Result 0
Result field equal to zero
means reading correctly
executed.
Byte 1) XX
Low byte-Low word drive
parameter value.
Byte 1) XX
High byte-Low word drive
parameter value.
Byte 1) XX
Low byte-High word drive
parameter value.
Byte 1) XX
High byte-High word
drive parameter value.
dn380
VALUE
1) The number of bytes of the Value-field depends on the length of the Drive
parameter; i.e. if the Drive parameter type is “Integer” the length of VALUE is
2 bytes.