====== Start Detector ======

{{:cs:mervis-ide:35-help:startdetector.png}}

==== Full Name ====

Lib.Mervis.v1_0.StartDetector

==== Required Project References ====

  * Lib.Mervis

===== Description =====

A helper block used to detect the start of a program.

===== Usage in ST =====

<code>
program test
    var
        startdetector: lib.mervis.v1_0.StartDetector;
    end_var

    startdetector();
end_program
</code>

===== Inputs =====

|Name       |Data Type|Retain|Mandatory Connection|Meaning|
|PulseLength|time     |No    |No                  |Duration of the generated pulse|

===== Outputs =====

|Name       |Data Type|Meaning|
|FirstCycle |bool     |Indicates that the first cycle is being executed|

===== Detailed Function Description =====

The block is used to simplify repeated tasks with the detection of the first cycle in FBD. The //FirstCycle// output is active for the duration of //PulseLength// from the first FBD cycle.