ProSoft Technology MVI56-BAS - Manual (Page 223)

MVI56-BAS ♦ ControlLogix Platform Reference
BASIC Module (DB/BAS Compatible) User Manual
ProSoft Technology, Inc. Page 223 of 234
December 13, 2011
Later, the readable version can be downloaded from the host computer using
RY.EXE. Then use the LOAD command to copy the readable program back into
RAM. Refer to the following illustration and Creating BASIC programs (page 47)
for more information:
Use the NEW command to initialize the RAM memory. This command causes the
RAM program to be deleted, and clears all variables, strings, and interrupts.
Example:
>NEW
The program in RAM mode is actually saved in a file in the Compact flash called
"XRAM.BAS". It allows the MVI56-BAS module to run the program at RAM during
start up.
Important: Do not try to edit or delete "XRAM.BAS", "BATTERY.BAS", or
"EPROM.BAS". These files are created and edited by the MVI56-BAS.
Using ROM Storage
Optionally, the BASIC programs can also be stored in the ROM area. Using ROM
storage allows the user to assign each program to a specific numeric location in
the module. It can be easily accessed later using ROM and RROM commands.
The user may also set up the module to run the BASIC program located at ROM
storage location 1 during power up (PROG2 command). The ROM storage area
is located in the Compact Flash file. The total storage capacity is 32 Kbytes.
In order to place a BASIC program in ROM storage, there must be a program in
RAM.
Example:
>LOAD "LIST.TXT"
After the program is in RAM memory, the user can move it to ROM storage using
the
PROG
command. The
PROG
command moves the BASIC program currently in
RAM memory to the first available location in the ROM area.
Example:
>PROG
In order to select a program currently stored in the ROM area, the
ROM [program
location]
command is used. A simple
RUN
command will run the selected BASIC
program.