====== Constants ======

Constants are special [[:en:mervis-ide:35-help:035-software_basic:030-common-elements:030-variables|variables]] defined within a declaration which contains the [[:en:mervis-ide:35-help:035-software_basic:030-common-elements:010-keywords|keyword]] CONSTANT.

Example:

<code st-iec>
VAR CONSTANT
    PI: REAL:=3.141592;
END_VAR
</code>