Introduction.

Workshop PG5
Resources
3.2.2 Registers
32 bit value
Integer : -2 147 483 648 to +2 147 483 647
Floating decimal : -9.22337E+18 to +9.22337E+18
R
NV
0 4095
A register can contain floating decimal or integer values. Registers are extremely
useful for arithmetic operations or operations with analogue values like
measurements and regulation tasks. You can have up to 4096 Registers. They
are non volatile.
In FUPLA, the lines connected to a register have different colors depending on
their content. If they contain a floating decimal value the lines are yellow, if
they contain an integer value, they are green. You can't interact an integer
value, with a floating decimal values. For example you can't add the two together.
One of the values has to be converted into the other’s value, and then
added.
How to use
Registers in
your program:
The following example adds the number 113 to the content of register 12 and
puts the result into register 54:
R 54 = R 12 + 113
Instruction list program:
COB 0
0
ADD R 12
113
R 54
FUPLA program:
(FBox: Integer, ADD)
Setup
Registers:
Dynamic resources allocation is a powerful feature introduced to free you from
having to specify a fixed address for every resource that you need.
Dynamic resources are used by defining a symbol name for a resource without
specifying an address. You won’t need to change these settings until you start
to write large programs with a large number of registers.
You must increase the dynamic space settings in case of assembling errors like
"Auto allocation overflow for type: R".
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