UniLogic is based on lexical data tags, not operands. The
memory is dynamically allocated depending on the data tags you create, and the
data type you link to your tags.
Note, however, that you can create a project containing pre-defined tags, VisiLogic-style. Click
the Project tab, and then select New (Pre-defined operands).
The dynamic memory allocation impacts significantly on the performance of the
PLC.
Since the precise location of the allocation is not known in advance, the memory is accessed
indirectly, usually through a pointer reference.
The memory size is as follows:
Please note that the maximum number of user operands that can be created is 100,000.
Also Note that Data Tables are made up of STRUCTS, which are tags, and which therefore they share the operand memory.