L-INX User Manual 200 LOYTEC
Version 4.0 LOYTEC electronics GmbH
Contact Close Label (String): This property contains the active text of the binary data
point.
Contact Close Label (String): This property contains the inactive text of the binary data
point.
9.1.2.3 Multi-state
Multi-state data points are exposed as a one-to-one mapping to OPC tags. For each multi-
state data point an OPC tag is created. The OPC tag contains a number of OPC properties,
which are derived from the data point‘s properties:
Item Canonical Data Type (SmallInt): This property indicates the data type ‗3‘
(Integer).
Item Value (Integer): The present data point value.
Item Quality (SmallInt): The value quality. It is ―good‖ if the data point is in normal
state, or ―uncertain‖ if the data point has an off-normal state, e.g., offline or unreliable.
Item Timestamp (Date): This property contains the timestamp of the last value update.
Item Access Rights (Integer): This property defines whether the tag is read-only or
read/write.
Item Description (String): This is the description of the data point.
Item EU Type (Integer): This property is ‗2‘ for multi-state.
Enumerated EU (Array of String): This property contains the state texts of the data
point.
9.1.2.4 User Type
User-type data points contain a byte array of user-defined data. Data points of user-type are
also exposed as a one-to-one mapping to OPC tags. For each such data point, an OPC tag is
created. The item value of the user-defined data is a hex string without whitespace
representing the byte array, e.g., ―B034‖. The OPC tag contains a number of OPC
properties, which are derived from the data point‘s properties:
Item Canonical Data Type (SmallInt): This property indicates the data type ‗8‘ (String).
Item Value (String): A hex string without whitespace representing the byte array.
Item Quality (SmallInt): The value quality. It is ―good‖ if the data point is in normal
state, or ―uncertain‖ if the data point has an off-normal state, e.g., offline or unreliable.
Item Timestamp (Date): This property contains the timestamp of the last value update.
Item Access Rights (Integer): This property defines whether the tag is read-only or
read/write.
Item Description (String): This is the description of the data point.
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