Mitsubishi Electric MELDAS C6 Instruction Manual page 215

When the "Error item" is "LINK", the cause of the error will be saved into the R register as
follows.
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2. Screen Operation of A985GOT
R register
R80 The contents of the latest errors.
(Cleared when the error is resolved.)
Bit 0 : Emergency B
Bit 1 : Emergency C
Bit 2 : Emergency D
Bit 3 : Emergency E
Bit 4 : Emergency F
R81 The contents of the latest errors.
(Retained until the NC power is
turned ON next.)
R82 The control signal;
External PLC -> NC
R83 The control signal;
NC -> External PLC
R84 The contents of the latest errors.
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2.7 Diagnosis
Details
• The external PLC is not ready.
• Data is not input from the external
PLC.
• Data is not read out by the external
PLC.
• Data is not written into the NC
correctly.
• 2-port RAM is not cleared when the
PC_OK signal is turned ON.
• This is cleared when the NC power is
turned ON again.
• Writing from PC to NC completion
flag.
• Writing from NC to PC completion
flag.
• This is not cleared even if the NC
power is turned ON again.
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