Internal data types
Data types, used in the D2000 systemSystem, are listed in the following table.
| Data type | Range |
|---|
| LongInteger | 64-bit Integer, i.e. -9 223 372 036 854 775 808 ≤ x ≤ 9 223 372 036 854 775 807
|
-2147483648 | Note: till version 21.0.70 LongInteger was only 32-bit, i.e. -2 147 483 648 ≤ x ≤ |
2147483647| 2 147 483 647 |
| LongReal | 0, 2.3x10-308 ≤ |x| ≤ 1.7x10308 |
| Time | 1.1.1972 - 31.12.2099. Time data accuracy in the D2000 |
system more then µs microsecond| millisecond). |
| Text | Text strings with |
floating length are limited to 10 000 characters| variable length. 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 - the maximum size of real numbers used as limits in the configuration of eval tags, I/O tags, historical values, etc.
- archive database - the maximum size of real data that can be stored in historical value archive
...