See AlsoHow To 
See AlsoIntroduction
A table object provides a number of features and possibilities. This topic provides an overview of the table-specific characteristics. For a definition of a table object, click See Also.
Type-specific properties
Each object type has its own type-specific properties. The table-specific properties can be viewed on the Table tab in the object properties dialog box. The most important ones are:
|
Property |
Description |
|
Name/Value |
In the Show Properties example, the oxygen uptake in a tank is monitored at four different locations and the results are shown in a table as the values o1, o2, o3 and o4. |
|
Type |
The values in the table are presented as fixed values with two decimals (Fixed Table). You may choose to have the values in the table represented as floating points instead (Float Table) in which case the values would be represented as, for example, 7.00000e+000. |
|
Decimal point |
Enter the number of decimals in the box. The number of decimals is really a scaling (division by 10, 100, 1000, etc.) that the system automatically performs. |
|
Minimum value |
Enter a minimum value for the object. By default, IGSS uses the lowest value in the Value column. |
|
Maximum value |
Enter a maximum value for the object. By default, IGSS uses the highest value in the Value column. |
Beside the type-specific properties a number of properties which are common to all object types are available from the other tabs of the object properties dialog box.
Graphical display of table objects
A table object can be represented in multiple ways on a process diagram. Click here for details.
Inheriting alarm limits
The fact that a table object has no alarm limits may be avoided by creating a connection between a table object and an analog object so that the table object inherits the alarm limits of the analog object.
Consecutive PLC addresses
Although a table object can handle up to ten process values, only one address is given on the Edit Mapping tab. This is because the system assumes that the values have consecutive PLC addresses.
Using table templates
If you have a number of very similar table objects sharing multiple properties, you will find it useful to use a table template. You will thus eliminate the need of entering the same information for many objects and obtain a better consistency in your configuration.
Scaling analog objects
By using the special scaling object, you can convert I/O values simply by connecting it to the table object whose values you want to convert.
A typical example is to convert °C to °F. The corresponding scaling object is defined once and can then be reused as many times as needed for both analog and table objects.
Connecting analog objects to other object types
To obtain more advanced functionality, you can connect a table object to another object type.
Click here for detailsDEF_OBJ_Overview_Connecting_different_object_types.