1. Symbols for software components

Symbols are alternative names for software components, represented by descriptive short words instead of absolute addresses.

You can create symbol names for the following types of software components: X Y、M、D、AI、AO、V、Z、S、C、T、CV、TV。 The symbols defined for software components are applicable globally.

Defined symbols can be used in all engineering programs (ladder diagrams, instruction lists, functional block diagrams). Symbols can be defined before or after creating program logic.

Attention

It should be noted that if a parameter name is specified in the subroutine parameter table, the parameter variable is applicable to the local scope, that is, to the subroutine in which it was defined.

If it is a soft component starting with LB, LW, LD, LF, such soft components are called "local variables" and only apply to the program they are in.

The above two variables differ from the symbols applicable to the global scope.

1.1. About Software Component Manager

Software Component Managercan manage the symbols of each software component.。

1.2. Assign symbols in the Software Component Manager

To assign symbols to software components, follow these steps:

Open the Software Component Manager.

Type the symbol name (e.g. Input1) in the "Symbol" column. The length of the symbol name is not limited, and it is recommended to be within 16 characters.

Type the software component address (e.g. D0 or M0) in the "Address" column.

You can adjust the column width in the Software Component Manager as needed.

1.3. In cases where repeated symbols are entered

Automatically change the second repeated symbol to a new name. For example, 'Input1' becomes' Input1_1 '.