Short summary

Name	`SysTaskCycleTime`
→POU type	→function
Category	more system blocks, blocks for target-system diagnostics
Graphical interface
Available since	version 1.46.0 (for logi.CAD 3) and version 2.3.801 of the →runtime system This block is supported for these →target systems or platforms: →Econ 100, →MICA, →phyBOARD-Regor, →phyBOARD-Wega, →Raspberry Pi, →Revolution Pi, →µMIC.200 platform `WindowsX86` (incl. the built-in PLC under Windows) version 1.109.0 (for logi.CAD 3) and version 3.19.0 of the →runtime system This block is supported for these →target systems or platforms: →phyBOARD-Regor, →phyBOARD-Wega, →Raspberry Pi, →Revolution Pi platform `WindowsX86` (incl. the built-in PLC under Windows) platform `LinuxX86` →Econ 100 (only up to version 3.2.0 for logi.CAD 3) →µMIC.200 (only up to version 1.126.0 for logi.CAD 3)

Functionality

The block returns the cycle time of the →task in the context of which the block is called.

Return value

	Identifier	→Data type	Description
Return value:	–	`TIME`	configured cycle time – the cycle time defined within the PLC-object

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

FUNCTION_BLOCK TestSysTaskCycleTime
     
    VAR
      configured : TIME;
      okConfigured : BOOL;
    END_VAR
     
    configured := SysTaskCycleTime(ENO=>ENO);
    (* Function 'TestSysTaskCycleTime' returns the configured cycle time. *)
    okConfigured := configured = T#500ms;
    ENO := AND(ENO, okConfigured);
     
END_FUNCTION_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.

Restriction for test framework

Do not use this block within a POU under test (see "Testing single POUs by using the test framework") because this block is not supported when a test is executed. Reason: The cycle time is adjusted during the test execution so this block returns faulty data.