Understanding Programs To LOAD a Disk File The controller cannot use the programs and information stored in disk files until they are loaded into system memory (RAM). A file can be loaded through the ACE graphical interface, or with the eV+ LOAD command typed at the eV+ Monitor prompt. For information on using the ACE system, refer to the Controller Development Tools topic in the ACE User's Guide . The LOAD command places a copy of the contents of a disk file in RAM. The figure below shows the effect of the command: LOAD my_file ↵ This command places the contents of the disk file "my_file" into RAM. "my_file" contains two programs and the values of variables used by those programs.
The LOAD command does not actually start a program executing; it simply places a copy of the disk file contents into system RAM so additional commands can start the program, or modify the program, or modify the values of the program variables. LOADing a Disk File To see all the programs that have been loaded into memory, use the DIRECTORY command. (FDIRECTORY lists files on the SD card; DIRECTORY lists programs in RAM.) To Start a Monitor Command Program Once a Monitor command program is resident in system memory, you can use the COMMANDS command to start the program. eV+Operating System User's Guide, v2.x, 18320-000 Rev A Page 48