FORCEMRK block
Short summary
Name |
|
→POU type |
|
Category |
|
Conform to →IEC-standard |
not defined in IEC-standard |
Graphical interface |
|
Available since |
|
Functionality
The block makes a selection to change the returned output value (to →force a value).
If the local, →retentive variable FSW
(= the force switch) is set to value FALSE
(or an equivalent), the block returns the value of input IN
. If the local, retentive variable FSW
(= the force switch) is set to value TRUE
(or an equivalent), the block returns the value of the local, retentive variable FVAL
.
Special case: If a STRING
value is connected to the input, Neuron Power Engineer uses the fixed length of 128
for the input and the output. However, if the connected STRING
value is longer, the output ENO
of the embracing →POU is set to value FALSE
(or an equivalent).
Diese Einschränkung gilt für den ForceMrk-Baustein, der Ein-/Ausgänge mit einem →allgemeinen Daten-Typen hat.
Restrictions The following restrictions apply to the usage of overloadable function block instances:
|
Good to know |
---|
Use an →OLT-field for a force marker inserted within the FBD-editor in order to toggle the force marker between the value of the input and the force value. Details: See "Creating or editing OLT-fields in FBD". Use the Force Markers view in order to enter force values for several force markers from within a central point of Neuron Power Engineer and to activate their force switch in one go. Details: See "Writing a force value for force marker onto the PLC". |
In-/outputs
|
Identifier |
Description |
|
---|---|---|---|
Inputs: |
|
|
input value |
Outputs: |
|
|
output 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
The calculated values are evaluated by using the Assert
block.
|
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.