Base class for all Cognex discrete I/O.
Inheritance Hierarchy
System MarshalByRefObject
Cognex.VisionPro.Implementation CogObjectBase
Cognex.VisionPro.Implementation CogSerializableObjectBase
Cognex.VisionPro.Implementation CogSerializableChangedEventBase
Cognex.VisionPro.QuickBuild.IO CogIODevice
Cognex.VisionPro.QuickBuild.IO CogIODiscreteDevice
Cognex.VisionPro.QuickBuild.Implementation.Internal CogIOFrameGrabber
Cognex.VisionPro.QuickBuild.IO CogIOMCB
Namespace: Cognex.VisionPro.QuickBuild.IO
Assembly: Cognex.VisionPro.QuickBuild.IO (in Cognex.VisionPro.QuickBuild.IO.dll) Version: 75.0.0.0 (75.0.0.0)
Syntax
The CogIODiscreteDevice type exposes the following members.
Constructors
| Name | Description | |
|---|---|---|
 | CogIODiscreteDevice(SerializationInfo, StreamingContext) |
Serialization constructor.
|
 | CogIODiscreteDevice(String, Int32) |
Base class for all Cognex frame grabber's discrete I/O.
|
Methods
| Name | Description | |
|---|---|---|
| Close |
This function should be called when the device is no longer used.
The override function must close a socket if it is an IP device,
close the serial port, or disable discrete I/O lines. All worker
threads that are used to send or read data must be stopped.
(Inherited from CogIODevice.) |
| CreateObjRef | Creates an object that contains all the relevant information required to generate a proxy used to communicate with a remote object. (Inherited from MarshalByRefObject.) |
| Equals | (Inherited from Object.) |
| Finalize | Allows an Object to attempt to free resources and perform other cleanup operations before the Object is reclaimed by garbage collection. (Inherited from Object.) |
| GetAttributes |
Implements the corresponding member of the ICustomTypeDescriptor interface.
May be overridden in derived classes to provide custom type information.
(Inherited from CogObjectBase.) |
| GetCallDelegate |
Used to verify whether a delegate function is assigned to line.
|
| GetClassName |
Implements the corresponding member of the ICustomTypeDescriptor interface.
May be overridden in derived classes to provide custom type information.
(Inherited from CogObjectBase.) |
| GetComponentName |
Implements the corresponding member of the ICustomTypeDescriptor interface.
May be overridden in derived classes to provide custom type information.
(Inherited from CogObjectBase.) |
| GetConverter |
Implements the corresponding member of the ICustomTypeDescriptor interface.
May be overridden in derived classes to provide custom type information.
(Inherited from CogObjectBase.) |
| GetCurrentActivityCount |
Cognex internal use only
|
| GetDefaultEvent |
Implements the corresponding member of the ICustomTypeDescriptor interface.
May be overridden in derived classes to provide custom type information.
(Inherited from CogObjectBase.) |
| GetDefaultProperty |
Implements the corresponding member of the ICustomTypeDescriptor interface.
May be overridden in derived classes to provide custom type information.
(Inherited from CogObjectBase.) |
| GetEditor |
Implements the corresponding member of the ICustomTypeDescriptor interface.
May be overridden in derived classes to provide custom type information.
(Inherited from CogObjectBase.) |
| GetEvents |
Implements the corresponding member of the ICustomTypeDescriptor interface.
May be overridden in derived classes to provide custom type information.
(Inherited from CogObjectBase.) |
| GetEvents( Attribute ) |
Implements the corresponding member of the ICustomTypeDescriptor interface.
May be overridden in derived classes to provide custom type information.
(Inherited from CogObjectBase.) |
| GetHashCode | Serves as a hash function for a particular type. (Inherited from Object.) |
| GetInputDelegate |
Get the input delegate associated with a particular input line
|
| GetLifetimeService | Retrieves the current lifetime service object that controls the lifetime policy for this instance. (Inherited from MarshalByRefObject.) |
| GetLinePolarity |
Returns polarity of line. When input is true, line is an input line number; otherwise, it is an output line number.
|
| GetObjectData |
Implements the GetObjectData method of the ISerializable interface.
(Inherited from CogSerializableObjectBase.) |
| GetProperties |
Implements the corresponding member of the ICustomTypeDescriptor interface.
May be overridden in derived classes to provide custom type information.
(Inherited from CogObjectBase.) |
| GetProperties( Attribute ) |
Implements the corresponding member of the ICustomTypeDescriptor interface.
May be overridden in derived classes to provide custom type information.
(Inherited from CogObjectBase.) |
| GetPropertyOwner |
Implements the corresponding member of the ICustomTypeDescriptor interface.
May be overridden in derived classes to provide custom type information.
(Inherited from CogObjectBase.) |
| GetType | Gets the Type of the current instance. (Inherited from Object.) |
| InitializeLifetimeService | Obtains a lifetime service object to control the lifetime policy for this instance. (Inherited from MarshalByRefObject.) |
| IsInputAsserted |
Reads the current state of an input line.
|
| MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) |
| MemberwiseClone(Boolean) | Creates a shallow copy of the current MarshalByRefObject object. (Inherited from MarshalByRefObject.) |
| OnChanged(Int64) |
This method should be called internally whenever the object's state may
have changed.
(Inherited from CogSerializableChangedEventBase.) |
| OnChanged(CogChangedEventArgs) |
This method may be called internally whenever a derived object's state
may have changed and the derived object expresses this change via a
derived CogChangedEventArgs class.
(Inherited from CogSerializableChangedEventBase.) |
| Open |
Initialize the derived device to its initial states.
(Inherited from CogIODevice.) |
| ResetAllWriteActivityCounter |
Cognex internal use only
|
| ResumeAndRaiseChangedEvent |
Re-enables raising of the Changed event after SuspendChangedEvent
has been called, and raises the Changed event if the
ChangedEventSuspended count is reduced to zero and any changes were
made while events were suspended. Must be called once for each call to
SuspendChangedEvent.
(Inherited from CogSerializableChangedEventBase.) |
| SetCallDelegate |
Turn on or off a delegate function call assigned to line.
You can assign delegate functions to all input lines
at the beginning, and control an input line change notification
using this function.
|
| SetInputDelegate | |
| SetLinePolarity |
Sets the polarity of line from either low to high or high to low.
|
| SetValue | |
| SuspendChangedEvent |
Temporarily suspends the raising of the Changed event. May be called
more than once, and a corresponding call to ResumeAndRaiseChangedEvent
must be made for each call to SuspendChangedEvent.
(Inherited from CogSerializableChangedEventBase.) |
| ToString | (Inherited from Object.) |
| Write |
A CogIODevice derived class must implement Write. The derived
classes are responsible for translating the input,
and sending the translated output to the physical device.
(Inherited from CogIODevice.) |
| WriteSyncPulse |
Output lines are not thread-safe. You must make sure that
your code using this method is thread-safe.
|
Fields
| Name | Description | |
|---|---|---|
  | SfIsHeartbeatActive | Heartbeat active changed flag |
 | SfNextSf | |
| writeActivityCounter |
Properties
| Name | Description | |
|---|---|---|
 | ChangedEventSuspended |
If nonzero, indicates that the raising of the Changed event has been
suspended. This value is incremented when SuspendChangedEvent is called
and decremented when ResumeAndRaiseChangedEvent is called.
(Inherited from CogSerializableChangedEventBase.) |
| DeviceIndex |
Return the index number of CogIODevice object.
|
| DeviceName |
Return the name that characterizes the instance of CogIODevice object.
(Inherited from CogIODevice.) |
| Enabled | (Overrides CogIODevice Enabled.) |
| HasChanged | (Inherited from CogSerializableChangedEventBase.) |
| InputDelegate | |
| IsDeviceOpen |
Returns true if the device is open; otherwise, returns false.
(Inherited from CogIODevice.) |
| MonitorInputs |
Controls whether the device is actively monitoring the input lines. When set to
false, the delegate will not be called and IsInputAsserted will return stale data.
|
| StateFlags |
Returns the complete set of state flags supported on this object. The
flags may be indexed by name as shown in the following C# code snippet:
if (changedObject.StateFlags["Color"] & eventArgs.StateFlags) { ... }
(Inherited from CogSerializableChangedEventBase.) |
Events
| Name | Description | |
|---|---|---|
 | Changed |
This event is raised when one or more parts of the object's state may
have changed.
(Inherited from CogSerializableChangedEventBase.) |
| IOLineChanged |
Cognex internal use only
|
See Also