Compiling And Downloading Multiple Resources; Viewing The Status Of Isagraf Variables; The Tags Button; The Params Button - MultiTrode MultiSmart Installation & Operation Manual

MultiSmart Installation & Operation Manual
It should be noted that ISaGRAF 5 must be enabled via the enable code on the MultiSmart unit. Otherwise,
the download process will fail.

24.5 Compiling and Downloading Multiple Resources

ISaGRAF 5 and MultiSmart support the concept of multiple resources. A new resource can be added from
the Link Architecture view of workbench by selecting Insert->Resource. The second resource can
be defined to run at a different frequency from the first resource. This is especially useful where there is a
time-critical resource which needs to be run frequently, as well as a non-time-critical resource which can be
run at a much slower frequency. It can also be useful as a means of dividing unrelated functionality. Each
resource defines its own separate dictionary.
As explained in the following section, MultiSmart allows viewing of ISaGRAF variables from the LCD, and
supports this in a multi-resource environment. However, in order for this to work, the symbol table for each
resource must be downloaded to MultiSmart. This can be defined by right-clicking on a resource and
selecting Properties. Then navigate to the Target/Code tab and ensure that Embed Symbol Table is
checked. By default, this option is checked for the first resource, but is unchecked for additional resources.

24.6 Viewing the Status of ISaGRAF Variables

Once ISaGRAF resources have been compiled & downloaded to MultiSmart it is possible to view the values
of all ISaGRAF variables from the LCD. To do so, navigate to Info->More->ISaGRAF 5. From there, you
will see the status information for the first resource. If multiple resources have been downloaded, then
information for additional resources can be displayed by using the arrow keys at the bottom of the screen.
Of particular interest is the Variables button at the bottom-right of the screen. If you press this button, all
ISaGRAF variables for the selected resource will be displayed, together with their values. The values of
these variables are updated dynamically. This is an extremely valuable tool for confirming that a resource is
behaving properly, and for debugging any problems. If you then highlight a variable and select the Details
button, you will see additional information for that variable, such as whether it is retained (in non-volatile
memory), and whether it has Read or Write access.

24.7 The Tags Button

On the Resource Information page is a Tags button. Selecting this button will display a list of general
purpose tags defined under the Isagraf5.Values node in the database. The values of these tags are
updated dynamically. New values for these tags can be assigned from this menu.
These tags are designed for use within ISaGRAF programs. They can be used for updating the status and
controlling set points of algorithms. They can also be added to a DNP or Modbus points list, thereby allowing
remote access to ISaGRAF functionality. The values of these tags can be read and controlled via the low-
level functions blocks defined in a previous section.

24.8 The Params Button

On the Resource Information page is also a Params button. Selecting this button will display a list of
configuration tags defined under the Isagraf5.Parameters node in the database. The values of these
tags are updated dynamically. The values of these parameters can be changed from this menu itself.
These tags are designed to be used as configuration parameters within ISaGRAF programs. They can be
modified via the Advancedadvanced screen by navigating to IsaGRAF5->Parameters, and will persist in
non-volatile memory. They can also be added to a DNP or Modbus points list, thereby allowing remote
configuration of ISaGRAF functionality. For increasing readability and easiness in understanding during
programming, ISaGRAF parameter descriptions can be renamed and this will be displayed in the information
screen. The renaming can be done via the information screen or via the advanced menu.
They can also be added to a DNP or Modbus points list, thereby allowing remote access to ISaGRAF
functionality.

24.9 Backing Up ISaGRAF Resources

All ISaGRAF resource and symbol information is downloaded to the /var/config/isagraf5 directory on
the MultiSmart. These files are all backed up to compact flash whenever a full backup of the MultiSmart
configuration is performed. This is done by navigating to:
More
Settings
MultiSmart_IO_Manual_A4_v2-22_R15.doc
More Backup Options Configurations
Backup Current
Page 173 of 201