User guide

GEL100340
Parameters
name
offset
$a0
ipal
tme
int
int
int
alternative type function
8192 Offset to be summed to the parameter identifiers
ipaO..ipa4.
0
Identifier of the DRIVE parameter that will be
found in slot 0 of the communication structure.
0 Identifier of the DRIVE parameter that will be
found in slot 1 of the communication structure.
ipa
ipa
int
int
0 Identifier of the DRIVE parameter that will be
found in slot 2 of the communication structure.
0 Identifier of the DRIVP parameter that will be
found in slot 3 of the communication structure.
ipa int 0 Identifier of the DRIVE parameter that will be
found in slot 4 of the communication structure.
wo192
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 DRIVE, 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 DRIVE
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 IPA Identifier of DRIVE parameters
l TYPE
‘Ijpe of DRIVE parameters
l VALUE Values to be written in the parameter specified by IPA
During the transition of DGFC from IDLE-SEADY the communication structure is configured:
l DGFC copies IpAO..IPA4 parameters in the IPA field of the respective slots.
l DGFC requires the DRIVE to carry out the configuration of the communication structure.
l The DRM? analyses the parameter identifiers in the IPA 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 0.
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 vO..v4 is copied in the VALUE field of the
corresponding communication structure and, at the end of each regulation cycle in the associated parameter of
theDRIVE.
The offset parameter is summed to ipaO..ipa4 parameters, this permits to refit the parameter identifiers.