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| Full name | Description | Unit | Default value | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Defines the time interval for the server to send the information about the change of monitored items within the instance subscription by "Publish message". | 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". | Number | 1000 | ||||||
| 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. | Number | 5 | ||||||
| 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 | 0YES | ||||||
| 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:
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 if the StatusCode entry is used when writing to the OPC DA Server version 2.05a. | YES/NO | YES |
| Kotva | ||||
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| Name | Meaning | Unit | Default value | ||||||
|---|---|---|---|---|---|---|---|---|---|
| ID | The identifier in text format, which is, in dependence on ID type, converted to the required native type. Note: if an identifier %IGNORE is specified for ID type=String, the I/O tag is ignored. | String | |||||||
| ID type | Enumerated types of identifiers. They help to access the objects in OPC UA address space. Numeric-1B ID: Identifier limited to 1-byte value (0-255) Numeric-2B ID: Identifier limited to 2-byte value (0-65535) Numeric-4B ID: 4-byte identifier String: Text identifier Guid -16B ID: 16-byte (128-bit) number that is usually divided into four parts. For example 3F2504E0-4F89-11D3-9A0C-0305E82C3301. ByteString: Identifier that is represented as a sequence of bytes. | Numeric-1B ID / Numeric-2B ID/ Numeric-4B ID/String/Guid -16B ID/ByteString | Undefined | ||||||
Namespace
| Numerical identifier of namespace of OPC UA server. Each OPC UA server can have N namespaces. However, the object identifier must be unique in one namespace. | Numeric | |||||||
| Variable type | The value type of objects that can be processed by OPC UA client. Variable type should be used only if I/O tag is intended for writing. As regards the reading of the object value, the information about type is sent together with the value. | Undefined / Boolean / Byte / SByte / Integer16 / Unsigned16 / Integer32 / Unsigned32 / Integer64 / Unsigned64 / Float / Double / String / UTC Time / Boolean array / Byte array / SByte array / Integer16 array / Unsigned16 array / Integer32 array / Unsigned32 array / Integer64 array / Unsigned64 array / Float array / Double array / String array / UTC Time array / LocalizedText / LocalizedText array | Undefined | ||||||
| Array index | If the object value is represented as a value array (Boolean array / Byte array / SByte array / Integer16 array / Unsigned16 array / Integer32 array / Unsigned32 array / Integer64 array / Unsigned64 array / Float array / Double array / String array / UTC Time array), the parameter defines its range or value of a particular item. The first element of array is identified by index 0. A text representation of array index may be in several formats:
Note: Writing is only supported for I/O tags with a specific index, not for ranges. | String | |||||||
| Write only | It controls if the I/O tag is a part of subscription. Its value will be sent periodically from the server in "Publish message". | Unchecked/checked | Unchecked | ||||||
| Expanded Node ID | If it is checked, it enables to address the ExpandedNodeId. Unlike the classic identifier in the OPC UA address space, ExpandedNodeId is supplemented by NameSpace URI and Server index. | Unchecked/checked | Unchecked | ||||||
| NamespaceUri | Text identifier of the namespace of the OPC UA server that is used instead of the numerical representation of a namespace. | String | |||||||
| ServerIndex | A numerical identifier that addresses the server number when using the ExpandedNodeID identifier. | Numeric | 0 |
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