Manual – Fieldbus Interface INTERBUS UFI11A
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Application examples
9.6 Writing of UFI11A or drive parameters via object 8288
The UFI offers a special parameter access via the object 8288 "variable data channel
with acyclical routing" for the universal write access to all data of the UFI or a drive in-
verter connected to the UFI (parameters, IPOS variables, IPOS program code, etc.).
The following description is the mechanism that can be used to change IPOS variables
or other variables via the parameter channel. The "variable data channel with acyclical
routing“ is available via index 8288 dez (2060 hex).
Example
Writing the value 74565 of the IPOS variable H0 = Index 11000 dez (2AF8 hex). The
value 74565 dez (0001 2345 hex) has to be written to the drive inverter with SBus
address 1.
After sending this service, you will receive the "Write_Confirmation." You can once again
use the return codes for the evaluation of a negative message.
Word Meaning Coding (hex)
1 Command_Code = Write_Request 00 82
2 Parameter_Count 00 09
3 Invoke_ID Comm._Reference 00 02
4 Index = 8288 20 60
5 Subindex Length 00 0C
6 Data[1] = Subkanal Data[2] = Subadresse 01 01
7 Data[3] = Frametyp Data[4] = Datenlänge 86 08
8 Data[5] = Verwaltung Data[6] = Reserviert 32 00
9 Data[7] = Index High Data[8] = Index Low 2A F8
10 Data[9] Data[10] 00 01
11 Data[11] Data[12] 23 45
Bits 15 ... 8 7 ... 0
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