Data Types & Variables

Alternative name for variable providing meaningful description of purpose.

Generic data type parameter allowing functions to accept multiple data types.

Indexed collection of same data type elements, accessed by numerical index.

Binary Coded Decimal format representing decimal digits in 4-bit groups.

Data structure packing multiple boolean flags into single memory word.

Boolean data type representing single bit with value TRUE (1) or FALSE (0).

8-bit data type for bit string operations or small unsigned values (0-255).

Single character data type for storing individual ASCII characters.

Fixed value that cannot be changed during program execution.

Siemens-specific memory area for storing structured data and function block instances.

Calendar date representation without time component.

Combined date and time stamp for event logging and scheduling.

32-bit double integer with range -2,147,483,648 to 2,147,483,647.

32-bit double word for bit string operations or large bit patterns.

User-defined type with named constants representing discrete values.

Number representation with fixed decimal point position for fractional values.

Number format allowing variable decimal position for wide range representation.

16-bit signed integer data type with range -32,768 to 32,767.

64-bit long integer for very large whole number values.

64-bit long real (double precision) floating-point for high-precision calculations.

64-bit long word for extended bit string operations.

Variable storing memory address of another variable for indirect addressing.

32-bit floating-point number for decimal values, following IEEE 754 standard.

Data type capable of storing both positive and negative values.

8-bit signed short integer with range -128 to 127.

Variable-length character array for text data, typically with defined maximum length.

User-defined data type grouping different data types into single unit.

User-defined data type limiting variable to specific range of values.

Duration data type for timer values, typically in milliseconds.

Time within a day from 00:00:00 to 23:59:59.999.

Converting data from one type to another, like INT to REAL or DINT to INT.

32-bit unsigned double integer with range 0 to 4,294,967,295.

16-bit unsigned integer with range 0 to 65,535.

64-bit unsigned long integer with maximum range for whole numbers.

Data type allowing same memory location to be accessed as different types.

Data type storing only positive values, doubling positive range.

8-bit unsigned short integer with range 0 to 255.

16-bit data type for bit string operations or register values.

Wide character string supporting Unicode for international character sets.