Porovnávané verzie

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Internal data types

Data types, used in the D2000 systemSystem, are listed in the following table.

Data typeRange
LongInteger64-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
LongReal0, 2.3x10-308 ≤ |x| ≤ 1.7x10308
Time1.1.1972 - 31.12.2099. Time data accuracy in the D2000
system
System is
more then
1
µs
ms (
microsecond
millisecond).
TextText 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

...