| Full name | Description | Unit | Default value |
|---|
Requested Publishing Interval | Defines the time interval for the server to send the information about the change of monitored items within the instance subscription by "Publish message".
Note: This parameter defines a proposed value that the OPC UA server can change, 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 |
| If the client does not send the request for data till the time defined by (LifeTime Count * Publishing Interval), the subscription expires. The value should be minimally 3 times higher than the "Requested Max KeepAlive Count".
Note: This parameter defines a proposed value that the OPC UA server can change, 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 a keep-alive message after elapsing the time (Max Notifications Per Publish * Publishing Interval). The client will confirm this message when it sends a new request for data.
Note: This parameter defines a proposed value that the OPC UA server can change, 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 | The 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 |
| The parameter enables/disables the publishing within the subscription. | YES/NO | YES |
| It defines a relative priority of a subscription. If the server should send more notifications, the subscription with higher priority is preferred. | 0-255 | 0 |
| This parameter enables to create the object queue with the defined length on the OPC UA server's side for each monitored item in a subscription. | Number | 0 |
| Timestamps used to write a value: - None - no timestamp is set
- Source - SourceTimestamp is set (equal to timestamp of written value)
- Server - ServerTimestamp is set (equal to current time)
- Both - both SourceTimestamp and ServerTimestamp are set
Note: If the OPC server does not support writing of timestamps, acording to the standard it should return the Bad_WriteNotSupported (2155020288) error code. | - | None |
| StatusCode item will be used when writing.
Note: According to the standard, the OPC UA Wrapper returns the Bad_WriteNotSupported (2155020288) error code if the StatusCode entry is used when writing to the OPC DA Server version 2.05a. | YES/NO | YES |
| When an item of an array is written, the entire array is read first and then written. If this parameter is set to NO, only a specific array item is written,
Note: According to the standard, if the OPC server does not support writing a specific array item, it should return the Bad_WriteNotSupported (2155020288) error code. | YES/NO | NO |