IAdsNotifications.TryAddDeviceNotificationEx Method (UInt32, UInt32, NotificationSettings, Object, Type, .Int32., UInt32.)
Connects a variable to the ADS client. The ADS client will be notified by the AdsNotificationEx event.
Namespace: TwinCAT.Ads
Assembly: TwinCAT.Ads.Abstractions (in
TwinCAT.Ads.Abstractions.dll) Version: 6.0.328+39e3229
Syntax
C#
AdsErrorCode TryAddDeviceNotificationEx(
uint indexGroup,
uint indexOffset,
NotificationSettings settings,
Object? userData,
Type type,
int[]? args,
out uint handle
)
Parameters
|
indexGroup |
Type: System.UInt32 |
|
indexOffset |
Type: System.UInt32 |
|
settings |
Type: TwinCAT.Ads.NotificationSettings |
|
userData |
Type: System.Object |
|
type |
Type: System.Type |
|
args |
Type: .System.Int32. |
|
handle |
Type: System.UInt32. |
Remarks
If type is a string type, the first element of the parameter args specifies the number of characters of the string. If type is an array type, the number of elements for each dimension has to be specified in the parameter args. Only primitive types (AnyType) are supported by this method. Because notifications allocate TwinCAT system resources, a complementary call to DeleteDeviceNotification(UInt32) should always called when the notification is not used anymore.