TP block
Short summary
Name |
|
→POU type |
|
Category |
|
Conform to →IEC-standard |
no restrictions, but: implementer-specific realization; see "Functionality" |
Graphical interface |
|
Available since |
version 1.4.1 (for Neuron Power Engineer) - initial variant version 3.8.0 (for library |
Functionality
This is a pulse generator.
Enter the length of the pulse at input PT
. If input IN
is →turned on and during the length of the pulse, output Q
returns value TRUE
(or an equivalent). Output ET
returns the expired time since turning input IN
on, until the value entered at PT
is reached.
Implementer-specific realization The IEC-standard does not specify whether and how to consider changes for input |
This block receives the current system time from the runtime system. This time remains constant while the same task is executed. However, in case of different tasks, it is possible that a different system time is used when the belonging programs are executed (even if the different tasks have the same cycle time). |
The following illustration shows the behavior of TP
:
In-/outputs
|
Identifier |
Description |
|
---|---|---|---|
Inputs: |
|
|
input/start |
|
|
preset time |
|
Outputs: |
|
|
output |
|
|
elapsed time |
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
Simple call of TP |
---|
|
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.