Operating instructions

MM420 Parameter List 04/02
MICROMASTER 420 Parameter List
84 6SE6400-5BA00-0BP0
P2012[2] USS PZD length Min: 0
CStat: CUT Datatype: U16 Unit: - Def: 2
P-Group: COMM Active: first confirm QuickComm. No Max: 4
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:
P2012[0] : Serial interface COM link
P2012[1] : Serial interface BOP link
Notice:
USS protocol consists of PZD and PKW which can be changed by the user via parameters P2012 and
P2013 respectively.
PKE IND PWE
STX
LGE
ADR
Start of text
Length
Address
STX LGE ADR
Parameter
Process data
BCC
PZD1 PZD2 PZD3 PZD4
PKE
IND
PWE
Parameter ID
Sub-index
Parameter value
USS telegram
PKW PZD
PKW
PZD
BCC
Parameter ID value
Process data
Block check character
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 parameter P2012, where the first two words (P2012 >= 2) 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
Control word
Status word
Process data
STW2
HSW
HIW
Main setpoint
Main actual value
HSW
HIW
P2012
PZD1
PZD2 PZD3 PZD4
Level:
3