Hardware manual

Fieldbus control description
20
PPO Types
The PPO (parameter process data object) consists of parameter identification (PKW)
and process data (PZD). The PKW is used for reading and writing parameters. The
PZD is used for transmitting Control Word, Status Word, Reference values, Actual
values and other process data.
The PPO Type 1-6 defines the form of Process data object. Types 1,2 and 5 contain
parameter identification (PKW). PPO Type 1-6 defines the length of Process data,
the length is 4 bytes at minimum and 20 bytes at maximum.
Type 1
Type 2
Type 3
Type 4
Type 5
Parameter Process data
CW REF PZD3PZD4PZD5PZD6PZD7PZD8PZD9 PZD10
VALUEIND
identification
PZD3SW ACT PZD4 PZD5 PZD6 PZD7 PZD8 PZD9 PZD10
Fixed area Freely mappable area
OUT area – Data sent from Master to Slave (control data)
IN area – Data sent from Slave to Master (actual data)
Parameter Identification:
ID – Parameter Identification
IND – Index for Arrays
VALUE – Parameter Value (Max. 4 bytes)
PKW – Parameter ID/Value
Process Data:
CW – Control Word
SW – Status Word
REF – Reference
ACT – Actual Value
PZD – Process Data (application-specific)
OUT area
IN area
ID IND VALUE
Type 6
Parameter channel
DP-V0
DP-V0
DP-V0
DP-V1
DP-V1
DP-V1
PKW PZD