SUB block
Short summary
Name |
|
→POU type |
|
Category |
|
Conform to →IEC-standard |
currently restricted |
Graphical interface |
|
Available since |
version 1.0.0 (for Neuron Power Engineer) – initial variant: version 1.64.0 (for Neuron Power Engineer) – enhancement: version 3.8.0 (for library |
Functionality
The mathematical function subtraction is called: The block returns the difference for IN1
– IN2
.
No check of invalid connections For some blocks, invalid connections are not checked by Neuron Power Engineer. Therefore, enter code in your application to detect invalid connections (e.g. See "Standard blocks for the application" for information what the consequences of an invalid connection might be. |
Inputs, return value
|
Identifier |
Description |
|
---|---|---|---|
Inputs: |
|
|
1st value |
|
|
2nd value |
|
Return value: |
– |
|
|
Input EN
and output ENO
are available when →calling the block. See "Execution control: EN, ENO" for information on input EN
and output ENO
.
See:
-
"Blocks for safe logic" whether this block is supported for developing safety-relevant applications.
-
"Highlighting safe logic in the FBD-editor" for the effects when using the block as a block for safe logic.
Example for usage within ST-editor
|
When creating your application within the ST-editor, enter a call of a block by typing the text as requested by the syntax or use Content Assist.
Examples for invalid connections
An invalid connection due to →overflows or →underflows might occur during a calculation using SUB
.
Examples for invalid connections |
---|
|