AdsConnection.TryAddDeviceNotification Method (String, Int32, NotificationSettings, Object, UInt32.)
Connects a variable to the ADS client. The ADS client will be notified by the AdsNotification event.
Namespace: TwinCAT.Ads
Assembly: TwinCAT.Ads (in TwinCAT.Ads.dll)
Version: 6.0.328+39e3229
Syntax
C#
public AdsErrorCode TryAddDeviceNotification(
string variableName,
int dataSize,
NotificationSettings settings,
Object? userData,
out uint handle
)
Parameters
|
variableName |
Type: System.String |
|
dataSize |
Type: System.Int32 |
|
settings |
Type: TwinCAT.Ads.NotificationSettings |
|
userData |
Type: System.Object |
|
handle |
Type: System.UInt32. |
Implements
IAdsNotifications.TryAddDeviceNotification(String, Int32,
NotificationSettings, Object, UInt32.)
Exceptions
|
Exception |
Condition |
|---|---|
Remarks
The
dataSize
Parameter defines the amount of bytes, that will be attached to the AdsNotification as value. Because notifications allocate TwinCAT system resources, a complementary call to TryDeleteDeviceNotification(UInt32) should always be called when the notification is not used anymore.