NEG -

Operator - Performs a negation of the input. (unary operator)

Inputs

Input	Data Type	Range	Unit	Default	Description
IN	ANY				Numeric value.

Outputs

Output	Data Type	Range	Unit	Description
Q	ANY			Negation of the input.

Remarks

• In FBD Function block diagram - Describes a function between input variables and output variables. A function is described as a set of elementary blocks. and FFLD language, the block NEG can be used.

Truth Table

IN	Q
0	0
1	-1
-123	123

FBD Language Example

FFLD Language Example

• In the FFLD Language, the conversion is executed only if the input rung (EN) is TRUE.
  • The output rung (ENO) keeps the same value as the input rung.
  • The negation is executed only if EN is TRUE.
  • ENO keeps the same value as EN.

IL Language Example

Not available.

ST Language Example

• In the ST Structured text - A high-level language that is block structured and syntactically resembles Pascal. Language, - (hyphen) can be followed by a complex Boolean expression between parentheses.
  • The output data type must be the same as the input data type.

Q := -IN;
Q := - (IN1 + IN2);