GE Industrial Solutions 6KCV300WPD - 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.