A Pragma is an implementation defined compiler directive. Fernhill SCADA supports these directives:
| Pragma Directive | Description |
|---|---|
| {Use "Library"} |
Allows one script file to reference another.
For example:
{Use "Library.Calculations"}
This directive will reference the variables, functions, function blocks and programs declared in "Library.Calculations"
|
| {GenericVariables} |
Allows a Variable Declaration to use a Generic Data Type.
For example:
{ GenericVariables }
VAR_GLOBAL
Value : ANY_ELEMENTARY;
END_VAR
|
| {AutoTypeConversion} |
Disables strict type checking.
Allows a value of one type to be assigned to a variable of another type without the need for a Type Cast.
For example:
{ GenericVariables }
VAR_GLOBAL
Value : DINT;
END_VAR
Value := '1'; |
If you need multiple pragma directives, separate each one with a comma. For example:
{ Use "Library.Calculations", GenericVariables }
IEC 61131-3 Second Edition: Table 3a.1.
IEC 61131-3 Third Edition: Table 4.1.
To learn about other IEC 61131-3 Common Elements.
For the meaning of terms used in Fernhill SCADA.