Festo Кабели и принадлежности - Manual (Page 103)

5. Parameter channel
5−3
Festo P.BE−SPC200−COM−PDP−E N en 0901c
5.1 General instructions
The transmission of parameters takes place in cyclic telegram
communication via the parameter channel and is based on
the parameter channel (PKW range;
Parameter IdentificationĆ
Value) of the PROFIdrive profile version 2.
The following are not supported:
ć Active parameters which are transmitted on the initiative
of the SPC200
ć Parameter descriptions (PBE) and text concerning the
general description of the parameter function
The parameter channel consists of eight bytes which are
transmitted consistently via the PROFIBUS. The parameters of
the SPC200 are treated as passive parameters. Depending on
the individual parameter, the SPC200 supports the following
tasks in parameter processing:
ć Reading parameter values and fault messages
ć Modifying parameter values
Via the parameter channel, the parameter values must be
written with the data type which is assigned to the parameter
(see section 5.3).
Remanent data are retained until they are modified. In the
event of Project Download or Data Reset, they will be set to
the specified values or to the values set in the project. Non−
remanent parameters will be initialized with the specified
values when the device is switched on. After being overĆ
written, the new value remains valid until one of the following
events occcurs:
ć Switch off / System reset
ć Write a new value