Value types of D2000 system objects
All the values to which the system assigns values are called active objects (classification of D2000 system object). Values of various types can be assigned to active objects. Admissible value types for individual objects are shown in the following table.
D - logical value I - integer value R - real value Ta - absolute time | Tr - relative time Li - Line Al - Alarm St - Station | Pr - Process Txt - Text Q - quadrat value | |||||||||
D | I | R | Ta | Tr | Li | Al | St | Pr | Txt | Q | |
---|---|---|---|---|---|---|---|---|---|---|---|
Alarm | × | ||||||||||
Calendar | × | ||||||||||
Day type | × | ||||||||||
Eval tag | × | × | × | × | × | ||||||
Historical value | × | × | × | × | × | × | × | × | × | × | |
I/O tag | × | × | × | × | × | × | |||||
Line | × | ||||||||||
Process | × | ||||||||||
Remote tag | × | × | × | × | × | ||||||
Station | × | ||||||||||
System tag | × | × | |||||||||
Time channel | × | × | × | ||||||||
User variable | × | × | × | × | × | × | |||||
Value array | × | × | × |
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