Literals

With LadderDIP PLC Studio user can define constants using the standard IEC / CEI 1131-3 notation. We can distinguish numerical constants and time costants.

A literal constant must be used with the IDENT component.

Base 2, base 8 and base 16 notation

Numbers in base 2,8 and 16, start respectively with the prefix 2#, 8# and 16# . The number, expressed in the specified base follow. For clarity, the underscore character '_' could be used to separate part of the number. This is useful, for example, for binary numbers.

Numerical constants

Examples

Time constants

A time literal is used whenever you need to program a specified time. A time literal always begin with one of these prefix T#, t#, TIME# or time#. After this prefix a time specification string follow. A lot of standard suffix defines the time in the desired unit. Between single time specifier you can use the underscore character '_' to increase literal readability.

Examples