7 OPC UA ObjectTypes ToC Previous Next

7.1 IOLinkDeviceType ObjectType Definition ToC Previous Next

7.1.3 Variables of ParameterSet ToC Previous Next

In Table 12, the Parameters of the ObjectType, referenced via the ParameterSet Object, are defined.

Table 12 – ParameterSet of IOLinkDeviceType

References Node Class BrowseName DataType TypeDefinition Modelling Rule
The following Parameters are also referenced by the Identification Object          
HasComponent Variable ApplicationSpecificTag String BaseDataVariableType Mandatory
HasComponent Variable FunctionTag String BaseDataVariableType Mandatory
HasComponent Variable LocationTag String BaseDataVariableType Mandatory
           
The following Parameters are also referenced by the General Object          
HasComponent Variable ErrorCount UInt16 BaseDataVariableType Optional
HasComponent Variable DetailedDeviceStatus Byte[][3] BaseDataVariableType Optional
HasComponent Variable ProcessDataOutput Byte[] ProcessDataVariableType Mandatory
HasComponent Variable ProcessDataInput Byte[] ProcessDataVariableType Mandatory
HasComponent Variable OffsetTime Duration BaseDataVariableType Optional

The writeable Variable ApplicationSpecificTag shall be mapped to ISDU Index 0x0018. If the device does not support this ISDU Index, the server shall provide the Variable nevertheless as it can be written by the client. The server shall persist the value, i.e. the value shall still be available after restart of the server. It is recommended to use the default value “***”. To allow clients to distinguish if the ApplicationSpecificTag is managed in the device or by the server, the Variable contains the read-only Property StoredInDevice as defined in Table 13. The value shall be “True” if the IO-Link Device supports the Index, and “False” otherwise.

Note: If the ISDU Index 0x0018 exists but its value is not permanently stored in the device, the server shall nevertheless not store the value persistently.

Table 13 – Properties of ApplicationSpecificTag

References Node Class BrowseName DataType TypeDefinition Modelling Rule
HasProperty Variable StoredInDevice Boolean PropertyType Mandatory

The writeable Variable FunctionTag shall be mapped to ISDU Index 0x0019. If the device does not support this ISDU Index, the server shall provide the Variable nevertheless as it can be written by the client. The server shall persist the value, i.e. the value shall still be available after restart of the server. It is recommended to use the default value “***”. To allow clients to distinguish if the FunctionTag is managed in the device or by the server, the Variable contains the read-only Property StoredInDevice as defined in Table 14. The value shall be “True” if the device supports the Index, and “False” otherwise.

Note: If the ISDU Index 0x0019 exists but its value is not permanently stored in the device, the server shall nevertheless not store the value persistently.

Table 14 – Properties of FunctionTag

References Node Class BrowseName DataType TypeDefinition Modelling Rule
HasProperty Variable StoredInDevice Boolean PropertyType Mandatory

The writeable Variable LocationTag shall be mapped to ISDU Index 0x001A. If the device does not support this ISDU Index, the server shall provide the Variable nevertheless as it can be written by the client. The server shall persist the value, i.e. the value shall still be available after restart of the server. It is recommended to use the default value “***”. To allow clients to distinguish if the LocationTag is managed in the device or by the server, the Variable contains the read-only Property StoredInDevice as defined in Table 15. The value shall be “True” if the device supports the Index, and “False” otherwise.

Note: If the ISDU Index 0x001A exists but its value is not permanently stored in the device, the server shall nevertheless not store the value persistently.

Table 15 – Properties of LocationTag

References Node Class BrowseName DataType TypeDefinition Modelling Rule
HasProperty Variable StoredInDevice Boolean PropertyType Mandatory

The read-only Variable ErrorCount shall be mapped to ISDU Index 0x0020. The value (UIntegerT of length 16) shall be mapped to an UInt16. If the device supports the ISDU Index, the server shall provide the Variable, otherwise it shall not provide the Variable.

The read-only Variable DetailedDeviceStatus shall be mapped to ISDU Index 0x0025. The value (ArrayT of OctetStringT3) shall be mapped to an Array of an Array of Bytes having the length of 3 (the inner Array). (The OctetStringT3 is mapped to an Array of Bytes of length 3 and the ArrayT to an Array.) The first entry in the inner Array is the first octet. If the device supports the ISDU Index, the server shall provide the Variable, otherwise it shall not provide the Variable.

The read-only Variable ProcessDataInput shall be mapped to the cyclically data transferred from the device. The value shall be mapped to a Byte[]. The Variable is of type ProcessDataVariableType (see section 10.1). The ProcessDataLength Variable of ProcessDataVariableType shall be mapped to address 0x05 of Direct Parameter Page 1. The PDDescriptor Variable of ProcessDataVarableType shall be mapped to ISDU Index 0x000E if the device supports the ISDU Index, otherwise the optional Variable shall not be provided. If the PD status of the cyclic communication is set to 1 (invalid data), the StatusCode of the ProcessDataInput shall become a bad code.

The Variable ProcessDataOutput shall be mapped to the cyclically data transferred to the device. It is vendor-specific, if the Variable is writeable. The value shall be mapped to a Byte[]. The Variable is of type ProcessDataVariableType (see section 10.1). The ProcessDataLength Variable of ProcessDataVariableType shall be mapped to address 0x06 of Direct Parameter Page 1. The PDDescriptor Variable of ProcessDataVarableType shall be mapped to ISDU Index 0x000F if the device supports the ISDU Index, otherwise the optional Variable shall not be provided. If the IO-Link Device has not received the IO-Link Master command ‘ProcessDataOutputOperate’, the StatusCode of the ProcessDataOutput shall become a bad code

The optional, writable Variable OffsetTime shall be mapped to ISDU Index 0x0030. The value shall be mapped to Duration (see 12.2.7.2 for details). If the device supports the ISDU Index, the server shall provide the Variable, otherwise it shall not provide the Variable.

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