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7 FUNCTION
7.15.1 Interrupt due to error occurrence
7.15.2 LED display when error occurs
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The High Performance model QCPU can execute the interrupt program of the interrupt
pointer that is set as the interrupt object when an error occurs.
Only when the error set to "continue" at the "PLC RAS" tab screen in the "(PLC)
Parameter" dialog box occurs, the High Performance model QCPU executes the
interrupt program corresponding to the error. When the error set to "stop" there occurs,
the interrupt program (I32) for "Stop all errors" is executed.
Interrupt pointer Corresponding error message
Stop all errors
I32
Empty
I33
UNIT VERIFY ERR.
I34
FUSE BREAK OFF
SP.UNIT ERROR
OPERATION ERROR
I35
SFCP OPE.ERROR
SFCP EXE.ERROR
ICM.OPE.ERROR
I36
FILE OPE.ERROR
EXTEND INS.ERR.
I37
I38
PRG.TIME OVER
CHK instruction
I39
Annunciator detect
Empty
I40 to I47
POINT
(1) The interrupt pointers I32 to I39 is at an execution disable mode when the
power is started or High Performance model QCPU is reset. When using I32 to
I39, use the IMASK instruction and EI instruction to enable execution.
(2)
: The I32 interrupt program is not executed upon the following serious errors.
• MAIN CPU DOWN
• END NOT EXECUTE
• RAM ERROR
• OPE CIRCUIT ERR.
When an error occurs, the LED located on the front of the High Performance model
QCPU turns on / flickers.
See Section 7.19 for the details on the LED operation.
Errors that occur when the system can continue
the drive mode, where or "continue" is selected from
"continues/stops".
MELSEC-Q
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