Full name | Description | Unit | Default value |
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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 |