09.2008 Communication / PROFIBUS
Siemens AG 6SE7087-6QX70 (Version AK)
SIMOVERT MASTERDRIVES Compendium Motion Control 8.2-7
There are five types of PPO:
♦ Useful data without a parameter area with two words or six words of
process data
♦ or useful data with a parameter area and two, six or ten words of
process data.
PKW PZD
PKE
IND
PWE
PZD1
STW1
ZSW1
PZD2
HSW
HIW
PZD3
PZD4
PZD5
PZD6
PZD7
PZD8
PZD9
PZD10
1
st
Word
2
nd
Word
3
rd
Word
4
th
Word
1
st
Word
2
nd
Word
3
rd
Word
4
th
Word
5
th
Word
6
th
Word
7
th
Word
8
th
Word
9
th
Word
10
th
Word
PPO1
PPO2
PPO3
PPO4
PPO5
PKW:
PZD:
PKE:
IND:
PWE:
Parameter ID value
Process data
Parameter ID
Index
Parameter value
STW:
ZSW:
HSW:
HIW:
Control word 1
Status word 1
Main setpoint
Main actual value
Table 8.2-1 Parameter process data object (PPO types)
Dividing the useful data into parameter identifier values and process data
enables different tasks to be carried out.