Subtraction -

Operator - Performs a subtraction of all inputs.

Inputs

Input	Data Type	Range	Unit	Default	Description
IN1	ANY_NUM / TIME				First input.
IN2	ANY_NUM / TIME				Second input.

Outputs

Output	Data Type	Range	Unit	Description
Q	ANY_NUM / TIME			Result: IN1 - IN2.

Remarks

• All inputs and the output must have the same type.

FBD Language Example

FFLD Language Example

• In the FFLD Language, the input rung (EN) enables the operation.
  • The output rung (ENO) keeps the same value as the input rung.
  • The subtraction is executed only if EN is TRUE.
  • ENO is equal to EN.

IL Language Example

• In the IL Language, the SUB instruction performs a subtraction between the current result and the operand.
  • The current result and the operand must have the same type.

Op1: FFLD  IN1
     SUB IN2
     ST  Q    (* Q is equal to: IN1 - IN2 *)
Op2: FFLD  IN1
     SUB IN2
     SUB IN3
     ST  Q    (* Q is equal to: IN1 - IN2 - IN3 *)

ST Language Example

Q := IN1 - IN2;

See Also

• Addition +
• Divide /
• Multiply