MLTrigIsTrigged

Description

Checks if the selected block has been triggered. When a block has been triggered, it contains the time and position when a Fast InputThe inputs are taken into account at each cycle depending on the system periodicity (for example each millisecond). Under certain circumstances this can be insufficient when more accuracy is needed, or if a quick response is required from the system. To fill the gap, a drive may have some Fast Input connections (generally one or two). When an event happens that triggers a Fast Input (e.g. when a sensor sends a rising edge), the detection of a signal occurs faster (which can be 1000 times more accurate than the system periodicity). Then the timestamp associated with this input can be provided to the IPC to take corrective action event occurred. The application has to reset the block before the block can be triggered again. All trigger events that are sent to the block during its triggered state are lost.

 

Figure 7-117: MLTrigIsTrigged

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• Once triggered, a block has to be reset before it can be triggered again. All events that are sent to a block while in a triggered state are ignored and the position and time information is lost.

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• This function or function block returns cached data. See Programming a Dual Core Controller for more information.

Arguments

Input

BlockID	Description	ID number of an initiated Trigger object
	Data type	DINT
	Range	[-2147483648, 2147483648]
	Unit	N/A
	Default	—

Output

Default (.Q)	Description	Returns TRUE if the selected Trigger Object has Triggered See more details here.
	Data type	BOOL
	Unit	N/A

Return Type

BOOL

Related Functions

MLTrigReadPos

MLTrigReadTime

See Also

• Fast Inputs with Pipe Network Motion
• Fast Inputs with PLCOpen
• Fast Homing Example with the Pipe Network Motion Engine Axis Pipe Block
• Fast Homing Example with the PLCopen Motion Engine
• Pipe Network Registration and Fast Homing
• Registration Position Capture Example with Pipe Network Trigger Block

Example

//Check if a Trigger Block has been triggered, then save position

IF MLTrigIsTrigged( PipeNetwork.TRIGGER ) THEN

Trig_Position := MLTrigReadPos( PipeNetwork.TRIGGER );

END_IF

Ladder Diagram

Function Block Diagram