What is a table object?

A table type, like the analog type, is used to represent a process component that can take on any value within a specified range. However, a single table object may be used for up to ten different analog objects that belong together in some way.

Use

The following examples show what a table object may be used for:

temperature gauges placed at different levels in a container. Being placed at different levels, the gauges would probably give different measurements but it would still be interesting to see their values presented together. Their values might be temperatures within a range of say -3 to 40 °C.
the oxygen uptake in a tank monitored at four different locations (Click the Show Properties button for an example).

How to define a table object

Click here $images\CHICLET.gif$ to learn how to define a table object.

When do I use a table object?

You should use a table object:

when you have more process values that logically belong together and
you do not need alarm supervision on your analog measure points

A table object has no alarm limits and hence no alarm supervision. A table object may, however, inherit the alarm limits from an analog object it is connected to.

Graphical display on diagram

Apart from using the standard symbols for table objects included in the default symbol file, Symbols.v20, that comes with IGSS, you can show a table object as a bar display, where appropriate. A bar display may, for example, be useful for showing a number of temperature gauges of a tank. Click here for further information..

How to view properties

Once the table object is defined and its symbol is placed on a process diagram, you can view its properties in a number of different ways.

By double-clicking the symbol representing the object
By right-clicking the symbol and then selecting Properties in the pop-up menu.
By selecting the symbol and then selecting Edit ® Object Properties.

The properties can be changed at any time.