Parker Compax3 Fluid T40

Communication
C3F_T40
356 192-121102 N04 June 2008
6.4.2.2 PKW parameter channel
Parameter access with DPV0
In addition to cyclic data exchange, you can use the PKW mechanism for acyclic
access to parameters.
The PKW mechanism is implemented for Profibus masters without DPV1
functionality.
PKW:Parameter identification value
You can select between:
 no PKW - without acyclic parameter access.
 PKW - paramter access via a PKW length of 8 bytes.
PKW structure
PWEPKE
Octet2 Octet 3
PKW
024
IND
Octet1 Octet6 Octet 7Octet5Octet 4 Octet 8
8
Additional information on the
structure of the PKW (see page 357)
6.4.2.3 Error reaction to a bus failure
Here you can adjust how Compax3 will respond to a fieldbus error:
Possible settings for the error reaction are:
 No response
 downramp / stop
 Downramp / switch to currentless (standard setting)
6.4.3. Cyclic process data channel
The structure of the PZD is defined in the configuration menu: "Profibus Telegram"
of the Servomanager.
6.4.3.1 Control and status word
The cyclic process data channel contains a control word and a status word both,
freely available and 16 bits in size:
Control word: Profibus-Master ⇒ Compax3
Status word: Compax3 ⇒ Profibus-Master