
G. BOOT SYSTEM (FOR Series 16–B/C,
18–B/C, 20, 21–B, 0i–A)
B–66102E/10
APPENDIX
120
When the NO SPACE message is displayed, flash memory is in one of the
following two states:
(1) Flash memory is fully occupied.
(2) Flash memory contains files in non-contiguous areas.
In flash memory, only continuous free areas are recognized as free areas.
Non-contiguous free areas may be ignored as described in (2) above.
Using the SYSTEM DATA CHECK screen, check the capacity of the
flash memory module installed in the Series 20.
Module size Number of management units
2MB 16
3MB 24
4MB
32
Total the number of management units constituting the files in flash
memory and subtract the total from the number of management units
corresponding to the capacity of the installed flash memory module.
Number of free management units=
Number of management units corresponding – Total number of management
to module capacity unitsconstituting all files
The number of management units constituting each file is given in
following table.
File name Contents
Number of
management units
NC BASIC Basic 10
OPT LANG Option 4
DG SERVO Servo 1
PMC-RA Lodder 1
PCD 0.5M P-CODE macro file (0.5M byte) 4
PCD 1.0M P-CODE macro file (1.0M byte) 8
PCD 1.5M P-CODE macro file (1.5M byte) 12
If a NO SPACE error message is displayed even though calculation
indicates that flash memory contains sufficient free management units,
then the free area in flash memory is non-contiguous. For example, if the
files are read to a 3MB flash memory module (24 management units) in
the order in which they are listed below, the module will have four free
management units.
4
Number of free
management units
24
Number of management
units in the module
20
Total number of
management units used
– =
G.5
FREE AREA IN
FLASH MEMORY
(Series 20)
G.5.1
Determining the Cause
of the No–space State