Variables

All variables within the entire system project are grouped as follows:

Variable Description
Global variables List all global variables that are used and accessible throughout the entire program
Retain Variables List all variables that are to be retained when the system is powered down
Program variables List the variables related to your specific selected program

For each variable, the Dictionary toolbox allows you to set the following parameters:

Field Description
Name The variable name
Value

All the variables in the Dictionary are animated with real-time values 1

Note that this column is only displayed when your application is running

For more details, see "Variable Monitoring"

Type The variable type (which can also be UDFBClosed"User Defined Function Block" UDFB can be used as a sub-function block in another program of the application. It is described using FBD, LD, ST or IL language. Input / output parameters of a UDFB (as well as private variables) are declared in the variable editor as local variables of the UDFB or complex structure)
Dim. To declare an array, you can specify dimension(s) for an internal variable
Attrib.

The variable attributes (Read Only, External, IN, OUT) as defined:

Init value The variable initial value when you start your application (see more details here)
User Group The variable user group (used for sorting variables)
HMIClosed"Human-machine interfaces " Also known as computer-human interfaces (CHI), and formerly known as man-machine interfaces, they are usually employed to communicate with PLCs and other computers, such as entering and monitoring temperatures or pressures for further automated control or emergency response Select variables to be used in HMI (see Map Variables to HMI)
Tag

The variable tag is a short comment, that can be displayed together with the variable name in graphical editors.

Description The variable description is a long comment text that describes the variable
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