CIRCUTOR PowerStudio Series - Manual (Page 264)

PowerStudio PowerStudio
264 User Manual
2.- Appendices
2.1.- Variables
In order to use references to the variables measured by devices in Scada, reports, charts and
tables, it will be necessary to know the encoding used by the software for each of them.
The basic encoding comprises the device name and the variable code separated by a dot.
name.variable
In this way the software will know which variable is involved and which device to ask for its
value.
This encoding (variable.name) can be used in formulae, graphs and tables, although in the
case of reports, graphs and tables we can display variables saved in value log files.
On those occasions we wish to filter a variable, as long as the variable can be filtered, for
instance in the case of energy, the filter information will be added to the basic encoding.
name_filter@name_type_time:name.variable
Here the name of the filter and the name of the type of hour upon which the variable values will
be filtered are indicated.
This type of encoding with filters may only be used in reports, graphs and tables, and with
variables that have been saved in value log files.
For a better understanding, the variables are displayed in separate tables depending on the
type of variable measured by the devices. The columns on the left correspond to the type of variable
measured: whether the variable is instantaneous, maximum or minimum, the phase to which it
corresponds, or any other information depending on the variable, and finally the code used (for
example the instantaneous phase-neutral voltage of phase 1 will correspond to the code VI1). On the
other hand, the columns to the right of each table will correspond to devices that can measure each of
the variables, indicating with an ‘X’ if the variable will be measured by the device and with an ‘O’ if the
variable will be measured depending on the version of the device.