Rockwell Automation 57C610 Enhanced Basic Language, AutoMax - Manual (Page 42)

6Ć2
3. Tunable variables. These variables can be double integer,
integer, or real type and can be read from, but cannot be written
to by any means except through the Programming Executive
software running on the personal computer. Note that tunable
variables used to define gain parameters affected by autoĆtuning
on the Universal Drive Controller (UDC) module will also be
written to by the operating system on the UDC. See instruction
manual SĆ3006 for more information on UDC tasks.
LOCAL Simple Variable Format
LOCAL variable
where:
variable = simple variable of any type, i.e., double integer,
integer, real, string, or boolean; more than one
variable can be defined with one statement by
separating the variables with commas
examples:
10 LOCAL START_BUTTON@
20 LOCAL LIMIT%, TEMPERATURE, MESSAGE$
LOCAL Subscripted (Array) Variable Format
LOCAL variable(size_list)
where:
variable = simple variable of any type, i.e., double integer,
integer, real, string, or boolean
size_list = up to five integer constants or integer variables
separated by commas, each value defining the
limit of the dimension of the array; expressions
that result in integer values are also permitted;
see section 4.1.2 for more information about
memory allocation for arrays; note that the first
item in every dimension is indicated in location
0, not 1
examples:
10 LOCAL A%(25) [reserves space for 26 integer
ąĂelements]
20 LOCAL B@(2,5) [reserves space for 18 boolean
ąĂelements]
LOCAL Tunable Variable Format
Tunable variables provide a method of adjusting values within a
certain range through the Programming Executive software while the
application task is running. Tunable variables can only be read by
the application task itself. They cannot be written to, except in the
case of tunable variables in UDC tasks, which are also written to by
the operating system on the UDC. Tunable variables can never
occur on the left side of a LET (assignment) statement.