Internal data types
Data types, used in D2000 system, are listed in the following table.
|LongInteger||-2147483648 ≤ x ≤ 2147483647|
|LongReal||0, 2.3x10-308 ≤ |x| ≤ 1.7x10308|
|Time||1.1.1972 - 31.12.2099. Time data accuracy in D2000 system is more then 1 µs (microsecond).|
|Text||Text strings with floating length are limited to 10 000 characters. The texts are internally encoded in UTF-8.|
Range of database types:
-1.0x1038 ≤ x ≤ 1.0x1038
This range implies the following restrictions relating to:
- configuration database - maximum size of real numbers used as limits in the configuration of eval tags, I/O tags, historical values, etc.
- archive database - maximum size of real data that can be stored in historical value archive