Operator: __POSITION The operator is an extension of the IEC 61131-1 standard. At runtime, the operator yields the position of a variable in the declaration part or in the implementation part of a POU

Operator: __POUNAME The operator is an extension of the IEC 61131-1 standard. At runtime, the operator yields the name of the POU that contains the operator __POUNAME . The result is of type STRING .

String Constants A string constant is a string enclosed in single straight quotation marks. The characters are coded according to the character set specified in ISO/IEC 8859-1. Therefore, a string con

Constant: UTF8# String With compiler version >= 3.5.18.0, UTF-8 encoded string literals are possible as a single-byte string with base STRING . Syntax: UTF8#' <string literal> ' Example 170 . Constant

Constant: Character The character literal for a single Unicode character has the base type UDINT . The type prefix UCHAR# is prefixed to the literal as an identifier. The numerical value of the charac

Constant: TIME, LTIME You can use TIME constants to operate the standard timer modules. The constant has a size of 32 bits and a resolution in milliseconds. In addition, the time constant LTIME is ava

Constant: Date and Time 32-bit date specification: DATE Use the DATE keyword ( D ) to specify a date. Syntax <date keyword>#<year>-<month>-<day> <date keyword> : DATE | date | D | d <year> : 1970-2106

Constant: Typed Literal With the ecxeption of REAL or LREAL -Constants (in this case, always LREAL is used) the smallest possible data type is used when calculating with IEC constants. If you want to

Access to Variables in Arrays, Structures, and Blocks Access to array elements Syntax: <name of array variable> [  <comma-separated list of dimension indexes>  ] <name of array variable> Name of the a

Bit Access in Variables Important Implement concurrent bit access by two tasks only if the processor can execute bit access directly on the memory. All x86 and x64 systems have commands for bit access