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
FFLD Language
- 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
- In the IL
"Instruction list"
This is a low-level language and resembles assembly 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
Q := IN1 - IN2;
See Also
