SUB block
Short summary
Name |
|
→POU type |
|
Category |
|
Conform to →IEC-standard |
currently restricted |
Graphical interface |
|
Available since |
|
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 "IEC-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 |
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|