reported value(s) are represented as a set of key-value pairsassociation between an identifier referred to as the key and a value which taken together create a key-value pair. . Each reported value in the data setkey-value pairs where each entry is uniquely identified by the key.MUST have a unique key.
DISCRETE
1.3
1.5
DEPRECATED as a representation in MTConnect Version 1.5. Replaced by the discrete,DataItem attribute of a DataItem.
TABLE
1.6
two dimensional set of key-value pairsassociation between an identifier referred to as the key and a value which taken together create a key-value pair. where the Entry represents a row, and the value is a set of key-value pairassociation between an identifier referred to as the key and a value which taken together create a key-value pair. Cell elements. A tabletwo dimensional set of values given by a set of key-value pairstable entries. follows the same behavior as the data setkey-value pairs where each entry is uniquely identified by the key. for change tracking, clearing, and history. When an Entry changes, all Cell elements update as a single unit following the behavior of a data setkey-value pairs where each entry is uniquely identified by the key.. > Note: It is best to use the VariableDataItemtype if the Cell elements represent multiple semantic types. Each Entry in the tabletwo dimensional set of values given by a set of key-value pairstable entries. MUST have a unique key. Each Cell of each Entry in the tabletwo dimensional set of values given by a set of key-value pairstable entries. MUST have a unique key. See Representation in Observation Information Model, for a description of Entry and Cell elements.
TIME_SERIES
1.2
series of sampled data. The data is reported for a specified number of samples and each sample is reported with a fixed period.
VALUE
1.2
measured value of the sample data. If no representation,DataItem is specified for a data item, the representation,DataItemMUST be determined to be VALUE.