Siemens COMBIMASTER 411 Operating Instructions Manual page 28

COMMUNICATION
Function of the subindex in IND
Subindex = 0 .. 254
If the subindex is transferred with values between 0 and 254 in a request, the
relevant parameter index is transferred in the case of an indexed parameter. For
the meaning of the individual indices of a parameter, please refer to the "Parameter
List" in the inverter operating instructions.
In the case of a descriptive element, the number of the required element is
transferred. The meaning of descriptive elements can be found in the PROFIDrive
Profile, version 2.0.
Subindex = 255
A value of 255 for the array subindex is a MICROMASTER 4-specific, special
function. If the array index is transferred with 255, all the indices of an indexed
parameter are transmitted simultaneously in one data block.
The function is meaningful only for acyclical data exchange mode. The structure of
the transferred data block complies with the USS specification. The maximum data
block size is 206 bytes.
Function of PARA PAGE SEL
The bit for parameter page selection functions as follows:
If it is set to 1, an offset of 2000 is applied in MICROMASTER 4 to the parameter
number (PNU) transferred in the PKW request before it is passed on.
Parameter name
(acc. To Parameter List)
P0000 – P1999
P2000 – P3999
Parameter value (PWE) 3
The parameter value (PWE) is always transmitted as a double word (32-bit). Only
one parameter value at a time can be transferred in a PPO telegram.
A 32-bit parameter value comprises PWE1 (high-order word, 3
(low-order word, 4
A 16-bit parameter value is transferred in PWE2 (low-order word, 4
(high-order word, 3
case.
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of parameter addressing via PROFIBUS
PNU
[decimal]
0 – 1999
0 – 1999
rd th
and 4 word
th
word).
rd
word) must be set to 0 on the PROFIBUS-DP master in this
PROFIBUS Communication Module
Corresponding mode
PNU Bit 15:
[Hex.] PARA PAGE SEL
0 – 7CF = 0
0 – 7CF = 1
rd
Issue 03/02
word) and PWE2
th
word). PWE1
Operating instructions
6SE6400-5AV00-0BP0