FREE monitor command FREE monitor command Syntax FREE Function Display the percentage of available system memory not currently in use. Details This command displays information about the status of system memory usage. Output for FREE The output from the FREE command appears as follows: % unused program memory = nn.nn The output for FREE has the following interpretation: % unused program memory = nn.nn This line displays the percentage of the memory available for application programs and variables that is not currently utilized. All system program memory that does not contain eV+ system software is available to store application programs and data.
If vision or servo tasks are running on the CPU, their programs are considered program memory. Some operations may result in the error message, "Not enough storage area," even though FREE shows that a small percentage of program memory is available. This can happen because the unused memory is fragmented into pieces that are too small to store application information. If this happens, store the entire contents of memory onto disk, ZERO memory, and reload your programs and variables from disk. If you receive any other error messages, memory may be corrupted. Save your programs and issue another FREE command. If the error persists, restart your controller.
If the error persists after a restart, contact Omron Adept Customer Service. As the available program memory is being added up, a simple check of all memory is made to ensure that the internal bookkeeping is consistent. Related Keyword FREE real-valued function eV+Operating System Reference Guide, 2.x,18321-000 Rev A Page 99