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3 SPECIFICATIONS
3 - 47
(c)
In the QD51 (-R24)'s Run mode, it is OFF in the cases shown below.
1)
When the reset request signal (Y1A) of the QD51 (-R24) is turned on
and reset is performed.
(It goes ON again if the QD51 (-R24)'s reset processing is completed
and the multitask execution enabled state is restored.)
2)
When a BASIC error is detected.
(Multitask execution interrupt signal (X0C) goes ON.)
OFF
X0C
ON
X0B
3)
When the QD51 (-R24) system is down.
(QD51 (-R24) system down signal (X0D) goes ON.)
OFF
X0D
ON
X0B
(3) Multitask Execution Interrupt Signal [X0C]
(a)
When the QD51 (-R24)'s mode setting switch is set in the "Run Mode (0 or
1)", this signal is enabled (it carries out ON/OFF control).
(If the QD51 (-R24) is in a mode other than the Run mode, it remains OFF
and does not change.)
(b)
This signal goes ON when an error is detected in a BASIC program during
multitask execution.
(At this time, the ERR. LED turns on, the special register (number: ED9000
or later, buffer memory address: 2400
and error code*1, and the module is placed in the system mode. Correct
the BASIC program where the error occurred.)
(c)
If the multitask execution interrupt signal (X0C) goes ON, the multitask
execution start signal (X0B) goes OFF.
BASIC
Error detection
OFF
X0C
ON
X0B
REMARK
1 For the error code, refer to Appendix 4.4 of the Programming Manual
(Commands).
BASIC
ON
Error detection
OFF
QD51
ON
System down
OFF
ON
OFF
MELSEC-Q
or later) stores the error line number
H
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