The IEC [...] according to IEC [...] is not part of the IEC

Operator: __ISVALIDREF The operator is an extension of the IEC

Operator: Global Namespace The operator is an extension of the IEC

Operator: ABS The IEC operator yields the absolute value of a

Operator: EXP The IEC operator yields the exponential function

Operator: SQRT The IEC operator yields the square root of a

Operator: LN The IEC operator yields the natural logarithm of a

on the <device name> IEC [...] name> IEC Objects ,

Operator: GT The IEC operator is used

Operator: LT The IEC operator is used for the "less