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3 SPECIFICATIONS
3.9 Relationship between the QD51 (-R24) Start Condition and the Flash ROM Execution
Program Area
Start Condition
Multitask Setting
Starting by turning the
power on or by reset
Starting by an interrupt from
the programmable
controller CPU
Starting by a start request
from another task
No multitask setting
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The start condition for each task is set "BOOT" as default.
To set to any other than "BOOT", change it using the system command SET.
The BASIC program's storage state in the program area differs as follows depending
on the set start conditions.
Area where the BASIC program to be
run is stored
Symbol
• Flash ROM run program area.
START
(Designated BASIC task No. area)
• Flash ROM run program area.
IT
(Designated BASIC task No. area)
• Flash ROM run program area.
BOOT
(Designated BASIC task No. area)
• User FD or HD file area for the
ON
peripheral device. (Save the BASIC
program as a file.)
OFF
POINT
The difference between the start condition "BOOT" and "ON" is as follows.
• BOOT
: The program to be run is stored in the designated BASIC task No. area
in the main memory's program area.
• ON
: Only the memory capacity of the designated BASIC task No. area in
flash ROM is set in the program area of the main memory.
The program to be run is not stored in the BASIC task No. area.
REMARK
Refer to the AD51H-BASIC programming manual (Debug and Compile) concerning
the system commands MSAVE and SET.
BASIC Program Read Timing
• In the System mode, when the power
is turned on or during a Rest.
• In the Run / Multitask debug mode,
during multitask execution.
• When run by the ZSTART command.
[The BASIC program with the file
name designated by the ZSTART
command is read.]
• Since there is no multitask setting,
reading of a BASIC program is not
done.
MELSEC-Q
Reference
Section
Section 3.11.2
Section 3.11.3
Section 3.11.4
Section 3.11.4
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