| Full name | Description | Unit | Default value |
|---|
| Requested Publishing Interval | Defines the time interval for server to send the information about the change of monitored items within the instance subscription by "Publish message".
Note: The This parameter defines a proposed value which the OPC UA server can change the value, e.g. Bernecker-Rainer always returned a value of "Publishing Interval" at least 50 ms, although the requested interval was smaller. | mi:ss.mss | 00:05.000 |
| Requested LifeTime Count | If the client does not send the request for data till the time defined by (Requested LifeTime Count * Requested Publishing Interval), the subscription expires. The value should be minimally 3 times higher than the "Requested Max KeepAlive Count".
Note: The This parameter defines a proposed value which the OPC UA server can change the value, e.g. Bernecker-Rainer always returned as a value of "LifeTime Count" a maximum of 600, although the requested value was greater. | Number | 1000 |
| Requested Max KeepAlive Count | If the objects of subscription are not changed, the server will send keep-alive message after elapsing the time (Max Notifications Per Publish * Requested Publishing Interval). The client will confirm this message when it sends a new request for data.
Note: The This parameter defines a proposed value which the OPC UA server can change the value, e.g. Bernecker-Rainer has always returned as a value of "Max KeepAlive Count" a maximum of 200, although the requested value was greater. | Number | 5 |
| Max Notifications Per Publish | Parameter defines the maximum number of notifications about the object change, which the server can send in one "Publish message". Zero indicates that the number of notifications is unlimited. | Number | 0 |
| Publishing Enabled | Parameter enables/disables the publishing within the subscription. | YES/NO | 0 |
| Priority | It defines a relative priority of one subscription. If server should send more notifications, the subscription with higher priority is preferred. | 0-255 | 0 |
| Samples Queue Size | This parameter enables to create the object queue with the defined length on OPC UA server's side for each monitored item in subscription. | Number | 0 |