Siemens SINAMICS V20 Series - Page 188

Parameter list
7.2 Parameter list
SINAMICS V20 Inverter
188 Operating Instructions, 07/2012, A5E03728167
Parameter Function Range Factory
default
Can be
changed
Scaling Data
set
Data
type
Acc.
Level
Index: [0] USS / MODBUS on RS485
[1] USS on RS232 (reserved)
Note: This parameter, index 0, will alter the baudrate on RS485 regardless of the protocol selected in P2023.
P2011[0...1] USS address 0 - 31 0 U, T - - U16 2
Sets unique address for inverter.
Index: [0] USS / MODBUS on RS485
[1] USS on RS232 (reserved)
Note: You can connect up to a further 30 inverters via the serial link (i.e. 31 inverters in total) and control them
with the USS serial bus protocol.
P2012[0...1] USS PZD length 0 - 8 2 U, T - - U16 3
Defines the number of 16-bit words in PZD part of USS telegram. In this area, process data (PZD) are
continually exchanged between the master and slaves. The PZD part of the USS telegram is used for the
main setpoint, and to control the inverter.
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.
PKE IND PWE
STX
LGE
ADR
STX LGE ADR BCC
PZ D1 PZ D2 PZD3 PZD4
PKE
IND
PWE
PKW PZD
PKW
PZD
BCC
866WHOHJUDP
3DUDPHWHU
6WDUWRIWH[W
/HQJWK
$GGUHVV
3DUDPHWHU,'YDOXH
3DUDPHWHU,'
6XELQGH[
3DUDPHWHUYDOXH
3URFHVVGDWD
%ORFNFKHFNFKDUDFWHU
3URFHVVGDWD
PZD transmits a control word and setpoint or status word and actual values.
The number of PZD-words in a USS-telegram are determined by P2012, where the first two words are
either:
a) control word and main setpoint or
b) status word and actual value.
When P2012 is greater or equal to 4 the additional control word is transferred as the 4th PZD-word (default
setting).
STW
ZSW
STW
ZSW
PZD
STW2
HSW
HIW
HSW
HIW
P2012
PZD1
PZD2 PZD3 PZD4
&RQWUROZRUG
6WDWXVZRUG
3URFHVVGDWD
0DLQVHWSRLQW
0DLQDFWXDOYDOXH