Application Data
ADI Variable Node
An application defined information model must specify variable nodes tied to ADIs completely. However, some attributes will be manipulated by the CompactCom module to contain values that matches the ADI setup of the host application and configured access rights. The table below specifies this behavior per attribute.
Node Attribute | Description |
|---|---|
NodeId | Instance number is translated to a NodeId in the Parameters namespace. This attribute is static and will not be manipulated by the CompactCom. |
NodeClass | This attribute is static and will not be manipulated by the CompactCom. |
BrowseName | This attribute is static and will not be manipulated by the CompactCom. |
DisplayName | This attribute will be manipulated by the CompactCom. |
Description | This attribute is static and will not be manipulated by the CompactCom. |
WriteMask | Only supported for the value attribute by the Anybus CompactCom. Other node attributes should be configured according to the application. This attribute is static and will not be manipulated by the CompactCom. |
UserWriteMask | Only supported for the value attribute by the Anybus CompactCom. Other node attributes should be configured according to the application. This attribute is static and will not be manipulated by the CompactCom. |
Value | This attribute will be manipulated by the CompactCom. |
DataType | Can be set to any OPC UA type that origins from an OPC UA built-in type that translates to the data type of the ADI that the variable points to. Only types of OPC Foundation namespace (namespace 0) is supported. This attribute is static and will not be manipulated by the CompactCom. |
ValueRank | The ValueRank is set to 1 for arrays (one dimension) and -1 for variables and structures (scalar) This attribute will be manipulated by the CompactCom. |
ArrayDimensions | The ArrayDimensions is null for variables and structures. If the ADI is an array the ArrayDimensions is an array with one entry. The value of this single entry is equal to the ADI attribute 3, Number of elements. This attribute will be manipulated by the CompactCom. |
AccessLevel | This attribute will be manipulated by the CompactCom. |
UserAccessLevel | This attribute will be manipulated by the CompactCom. |
MinimumSamplingInterval | Not supported by the Anybus CompactCom. |
Historizing | The attributes should be configured according to the application. This attribute is static and will not be manipulated by the CompactCom. |
Translation of Supported Data Types
Anybus data type | OPC UA data type | OPC UA variable type | Description |
|---|---|---|---|
BOOL/BOOL1 | Boolean | BaseDataVariableType | |
SINT8 | SByte | BaseDataVariableType | |
SINT16 | Int16 | BaseDataVariableType | |
SINT32 | Int32 | BaseDataVariableType | |
UINT8 | Byte | BaseDataVariableType | |
UINT16 | UInt16 | BaseDataVariableType | |
UINT32 | UInt32 | BaseDataVariableType | |
CHAR | String | BaseDataVariableType | Array of CHAR will be translated to a single string |
SINT64 | Int64 | BaseDataVariableType | |
UINT64 | UInt64 | BaseDataVariableType | |
FLOAT | Float | BaseDataVariableType | |
DOUBLE | Double | BaseDataVariableType | |
DateTime | BaseDataVariableType | A DateTime value shall be encoded as a 64-bit signed integer which represents the number of 100 nanosecond intervals since January 1, 1601 (UTC). | |
Struct of: UINT32 UINT16 UINT16 OCTET[8] | Guid | BaseDataVariableType | A 16-byte value that can be used as a globally unique identifier. |
OCTET | ByteString | BaseDataVariableType | |
UINT32 | StatusCode | BaseDataVariableType | |
CHAR | LocalizedText | BaseDataVariableType |
Anybus Data Types Without Matching OPC UA Built-in Type
Some Anybus data types do not have an equivalent OPC UA built-in type. These Anybus data types have either no translation defined or translates to a simple type that match the data type well.
Anybus data type | Translation description |
|---|---|
BITx | Translated to BitFieldMaskDataType which is a subtype of Uint64 |
BITS8/BITS16/BITS32 | |
Enum | Translated to Byte |