48
SI-INTERBUS User Guide
Issue Number: 1
Table 8-9 TASK ID codes
The data structure for the response from the drive is similar to the request, the only
difference is the TASK ID is replaced by the RESPONSE ID as shown in
Table 8-10 PPO 4 Word IN data structure
The RESPONSE ID indicates the success or otherwise of the requested transaction.
The possible RESPONSE ID values are shown in
TASK
ID
Function
Description
0
No task
No non-cyclic transaction required.
1
Fieldbus specific
2
Fieldbus specific
3
Fieldbus specific
4
Not implemented
Reserved
5
Not implemented
Reserved
6
Request parameter value
Read parameter value from drive.
Specify MENU and PARAMETER.
Set DATA HIGH word and DATA LOW word to 0.
7
Change parameter value
(16-bit)
Write 16-bit parameter value to the drive.
Specify MENU, PARAMETER and DATA LOW word.
(Any value in DATA HIGH word will be discarded).
This function can be used to write to 32-bit drive
parameters, but the range of values is limited to 16 bits.
8
Change parameter value
(32-bit)
Write 32-bit parameter value to the drive.
Specify MENU, PARAMETER, DATA HIGH word and DATA
LOW word.
This function can also be used to write to 16-bit drive
parameters, but if DATA HIGH word is not set to 0, a value
over-range error will be reported.
9
Request last parameter
reference
Returns the last parameter number for the specified menu.
Specify MENU.
(Values in PARAMETER, DATA HIGH word and DATA
LOW word will be discarded.)
OUT Data Word
Function
b15 to b12
b11
b10 to b8
b7 to b0
IN Word 0
RESPONSE ID
0
MENU
IN Word 1
PARAMETER
Reserved
IN Word 2
DATA HIGH word
IN Word 3
DATA LOW word
