Pkw Mechanism For Processing Parameters - Siemens COMBIMASTER 411 Operating Instructions Manual

Profibus module
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COMMUNICATION
3.4

PKW mechanism for processing parameters

Parameter area (PKW)
Using the PKW mechanism you can process and monitor parameters (write/read)
as described below:
Precondition:
PPO type 1 on MICROMASTER 4 in accordance with PROFIDrive Profile version
2.0
or
use of acyclical channel in conjunction with data block 100
The parameter area includes at least 4 words.
Bit no.:
Bit no.:
Figure 3-4
Parameter identifier (PKE), 1
The parameter identifier (PKE) is always a 16-bit value.
Bits 0 to 10 (PNU) contain the number of the relevant parameter.
Bit 11 is reserved.
Bits 12 to 15 (AK) contain the request or the response identifier.
The meaning of the request identifier for request telegrams (master → inverter) is shown in
Table 3-3
are specific to MICROMASTER and not defined in the PROFIDrive Profile.
The meaning of the response identifier for response telegrams (inverter → master)
is shown in
Table 3-4.
The request identifier will determine which response identifiers are possible. If the
response identifier is 7 (cannot process request), then one of the fault numbers
listed in Table 3-5 will be stored in parameter value 2 (PWE2).
24
Parameter identifier
15
12
11
AK
0
Parameter index
15
8
Structure and meaning are dependent on mode of data exchange used (see
following pages)
Parameter value
Parameter value high
Parameter value low
AK:
Request or response identifier
PNU:
Parameter number
Structure of parameter area (PKW)
st
word
Request identifier (master -> inverter). Request identifiers 11 to 14
(PKE)
10
0
PNU
(IND)
7
0
(PWE)
(PWE1)
(PWE2)
PROFIBUS Communication Module
Issue 03/02
st
1
word
nd
2
word
rd
3
word
th
4
word
Operating instructions
6SE6400-5AV00-0BP0

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