AdsConnection.AddDeviceNotification Method (String, Int32, NotificationSettings, Object)
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 uint AddDeviceNotification(
string variableName,
int dataSize,
NotificationSettings settings,
Object? userData
)
Parameters
|
variableName |
Type: System.String |
|
dataSize |
Type: System.Int32 |
|
settings |
Type: TwinCAT.Ads.NotificationSettings |
|
userData |
Type: System.Object |
Return Value
Type: UInt32
The notification handle.
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 DeleteDeviceNotification(UInt32) should always called when the notification is not used anymore.