Introduction
A string object provides a number of features and possibilities. This topic provides an overview of the string-specific characteristics. For a definition of a string object, click See Also.
Type-specific properties
Each object type has its own type-specific properties. The string-specific properties can be viewed on the String tab in the object properties dialog box. The most important ones are:
|
Property |
Description |
|
Maximum length |
Enter the maximum number of characters you need for this text string.
|
|
String |
Enter the text string you want to display. |
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 string objects
A string object can be represented in multiple ways on a process diagram. Click here for details.
Data Management Definitions
A string object does not report any value or state which is why the base interval, data reduction and transfer to history options are disabled on the Data Management Definitions tab.
Sending messages to the PLC
Typically, a string object is used to send messages from the PLC to the operator. However, if your PLC program supports it, you can send messages from IGSS to the PLC.
String objects and exclusive control
By connecting string objects to individual IGSS workstations, you can obtain exclusive control of individual IGSS objects. Refer to the Help function of the IGSS User Administration program for further information.