GE Industrial Solutions 6KCV300WPD User Manual
Page 148
Parameters
name
offset
int
int
int
alternative type function
8192
Offset to be summed to the parameter identifiers
0
Identifier of the DRIVE parameter that will be
found in slot 0 of the communication structure.
0
Identifier of the
parameter that will be
found in slot 1 of the communication structure.
0
Identifier of the
parameter
will be
found in slot 2 of the communication structure.
0
Identifier of the
parameter that will be
found in slot 3 of the communication structure.
0
Identifier of the
parameter that will be
found in slot 4 of the communication structure.
The DGFC board communicates to the DRIVE through a device called DPRAM. This device allows the
DGFC
card to write or read from the parameters of the
and consequently to condition its functioning.
In DPRAM there are various communication structures with different functioning modes.
The
structure piloted by the ODS block carries out a writing operation of DGFC to the
parameters. The maximum number of parameters to be controlled by this structure is 5. The writing of
the parameters occurs at the end of each regulation cycle.
The communication structure is composed of five slots. Inside each
slot
3 data are contained:
l
Identifier of DRIVE parameters
l
TYPE
of DRIVE parameters
l
VALUE
Values to be written in the parameter specified by
During the transition of DGFC from
the communication structure is configured:
l
DGFC copies
parameters in the
field of the respective
slots.
l
DGFC requires the DRIVE to carry out the configuration of the communication structure.
l
The
analyses the parameter identifiers in the
field and if it finds them in compliance with
each other, it writes the type of the required parameter in the TYPE field. The TYPE field will be used
during the communication to perform the automatic conversion of data.
If any parameter identifier does not comply with the others, the whole communication structure will be
disabled and the output port in RUN will contain value
After the configuration of the communication structure and until
DGFC
does not move into the RUN status,
the value 0 will be written
in the VALUE
field.
When DGFC is in the RUN status, the value read by input ports
is copied in the
VALUE
field of the
corresponding communication structure and, at the end of each regulation cycle in the associated parameter of
The
offset
parameter is summed to
parameters, this permits to refit the parameter identifiers.