Siemens SINAMICS V20 Series - Page 189

Parameter list
7.2 Parameter list
SINAMICS V20 Inverter
Operating Instructions, 07/2012, A5E03728167
189
Parameter Function Range Factory
default
Can be
changed
Scaling Data
set
Data
type
Acc.
Level
P2013[0...1] USS PKW length 0 - 127 127 U, T - - U16 3
Defines the number of 16-bit words in PKW part of USS telegram. The PKW area can be varied.
Depending on the particular requirement, 3-word, 4-word or variable word lengths can be parameterized.
The PKW part of the USS telegram is used to read and write individual parameter values.
0 No words
3 3 words
4 4 words
127 Variable
Example: Data type
U16 (16 Bit) U32 (32 Bit) Float (32 Bit)
P2013 = 3 X Parameter access fault Parameter access fault
P2013 = 4 X X X
P2013 = 127 X X X
Index: [0] USS / MODBUS on RS485
[1] USS on RS232 (reserved)
Notice: USS protocol consists of PZD and PKW which can be changed by the user via P2012 and P2013
respectively. P2013 determines the number of PKW-words in a USS-telegram. Setting P2013 to 3 or 4
determines the length of the PKW words (3 = three words and 4 = four words). When P2013 set to 127
automatically adjusts the length of the PKW words are required.
P2013 = 3
P2013 = 4
PKE IND PWE
P2013
PKE IND PWE
P2013
PKE
IND
PWE
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HDFK%LW
3DUDPHWHU,'
6XELQGH[
3DUDPHWHUYDOXH
If a fixed PKW length is selected only one parameter value can be transferred.
In the case of indexed parameter, you must use the variable PKW length if you wish to have the values of
all indices transferred in a single telegram.
In selecting the fixed PKW length, it is important to ensure the value in question can be transferred using
this PKW length.
P2013 = 3, fixes PKW length, but does not allow access to many parameter values.
A parameter fault is generated when an out-of-range value is used, the value will not be accepted but the
inverter state will not be affected.
Useful for applications where parameters are not changed, but MM3s are also used.
Broadcast mode is not possible with this setting.
P2013 = 4, fixes PKW length.
Allows access to all parameters, but indexed parameters can only be read one index at a time.
Word order for single word values are different to setting 3 or 127, see example below.
P2013 = 127, most useful setting.
PKW reply length varies depending on the amount of information needed.
Can read fault information and all indices of a parameter with a single telegram with this setting.
Example:
Set P0700 to value 5 (P0700 = 2BC (hex))