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Configuring the fieldbus
6.1 Communication via PROFIBUS
Frequency inverters with Control Units CU230P-2 HVAC, CU230P-2 DP, CU230P-2 CAN
110
Operating Instructions, 01/2011, FW 4.4, A5E02430659B AD
Parameter index (IND)
3.(
,1'
3:(
VW
ZRUG
QG
ZRUG
UG
DQG
WK
ZRUG
3DJHLQGH[
6XELQGH[,1'
3DUDPHWHUFKDQQHO
Figure 6-3
Structure of the parameter index (IND)
●
For indexed parameters, select the index of the parameter by transferring the appropriate
value between 0 and 254 to the subindex within a job.
●
The page index is used to switch over the parameter numbers. Use this byte to add an
offset to the parameter number that is transferred in the 1st word of the parameter
channel (PKE).
Page index: Offset of parameter number
The parameter numbers are assigned to several parameter ranges. The following table
shows which value you must transfer to the page index to achieve a particular parameter
number.
Table 6- 13 Page index setting dependent on parameter range
Page index
Parameter range
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Hex value
0000 … 1999
0
0
0
0
0
0
0
0
0x00
2000 … 3999
1
0
0
0
0
0
0
0
0x80
6000 … 7999
1
0
0
1
0
0
0
0
0x90
8000 … 9999
0
0
1
0
0
0
0
0
0x20
10000 … 11999
1
0
1
0
0
0
0
0
0xA0
20000 … 21999
0
1
0
1
0
0
0
0
0x50
30000 … 31999
1
1
1
1
0
0
0
0
0xF0
Parameter value (PWE)
The parameter value (PWE) is transferred as a double word (32 bits). Only one parameter
value may be transferred per telegram.
A 32 bit parameter value includes PWE1 (H word, 3rd word) and PWE2 (L word, 4th word).
A 16 bit parameter value is transferred in PWE2 (L word, 4th word). In this case, PWE1 (H
word, 3rd word) must be set to 0.
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