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NI Port Element

Modified on 2018/08/02 23:25 by Administrator Categorized as Communications


Element Icon NI Port
Category: Communication AddIn: AddIn_NI
Creator: OkazoLab Scope: Parent event
Owns Snippets: None Usage: Snippets


NameDescription                              ConstraintsTypeOn
Port Settings
Port Name        Selected port on the NI board                String         
Pin Number        Defines a number of bins on the selected NI port                String         
Working Mode        Defines a working mode for the element.Select the 'AutoOutput on event onset' mode for sending signals synchronously with an onset of the parent event,or 'Triggering on input' mode for catching the particular pattern in port input. For custom reading/writing scenarios use the 'Manual IO' mode, in which port communication can be controlled by your code.                stPara..         
Test Input        Open a input monitor window showing real-time port input with the current settings. Use for testing at designtime.                Boolean         
Input Value        Returns the current state of the port input lines. The property is updated automatically only in the Triggering Input mode. The value can be read either to the integer or binary formats, e.g. 'string S=Input;' may return '01010101'                clBina..         
Triggering Value        When the element is in the 'Triggering input' working mode, a value of this property defines the 'catching' input pattern in the binary format. If the pattern is detected in port input at any time, the element registers the detection time and becomes triggered. The Triggering Input has to be defined for each of the port line, e.g. '1111****' can be used for detection of the ON state in the first 4 lines of a 8-bit port. Use either '0' or '1' chars for the relevant lines and and the '*' char for irrelevant. Set all lines to *, if you want to detect any change in the port input.                String         
Trigger Once        Defines whether the element can be triggered multiple times, while the parent event is active. If the property value is 'true' only the first triggering is registered                Boolean         
Signal Profile        Defines the time-amplitude profile of the output signal.'Level Change', 'Pulse' and 'TTL' profiles are available                stPara..         
Preface Duration        Defines the duration (ms) of the guarantied zero preface interval for the TTL or Pulse signals. Increase the preface duration marginally, if your recording hardware does not detect port signals. Note that a non-zero preface delays the onset of the actual signal.                Double         
Pulse Duration        Duration of a single output pulse in ms. The value is applied only if the Pulse signal profile is selected                UInt64         
Interpulse Duration        Defines a duration of the inter-pulse interval in ms. The value is applied only if the Pulse  signal profile is selected                clTime         
Pulse Number        Defines a number of pulses in the pulse train. The value is applied only if the Pulse signal profile is selected                Int32         
Output Value        Value to be sent through the port. Can be defined in integer or binary format, e.g. Output='01010000'; or Output=255;                clBina..         
Send Output Now        Runtime action initiating an instant output communication through the port. Call this action in snippets by 'SendNow=true;', but only if the element works in the 'Manual I/O' mode.                Boolean         
Runtime Status
Is Triggered        Indicates whether the element has been triggered at least once since activation of the parent event.Triggering occurs only in the 'Input Detection' working mode                Boolean         
Triggering Time        Indicates the local event time of the last element triggering. Triggering occurs only in the 'Input Detection' working mode.                clTime         
Is Enabled        If set to false the element is completely omitted when the experiment is run                Boolean         
Title        Title of the element                String         

NI Port Element allows sending and receiving data via digital ports on the National Instruments DAQ cards. The element can be used in standard experimental tasks, for example, for sending synchronization triggers/markers to an EEG recording station.




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Practical Use


Technique 1

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    === Technique 2 ===
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     // Check the trial outcome. Result and RT just other user variables
    // insert code snippet here..
    == Notes ==
  5. Insert Notes here..
  6. Insert Notes here..

  Name Size
- NI-Port-Element-Icon.png 3.97 KB
- NIPortIcon.jpg 1.78 KB
- NIPortIcon.png 1.67 KB

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