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Register No. Function Description
R4139 CPU Status Bit0 =0, PLC STOP
=1, PLC RUN
Bit1 , Reserved
Bit2 =1, Ladder program checksum error
Bit3 =0, Without ROM Pack
=1, With ROM Pack
Bit4 =1, Watch-Dog error
Bit5 =1, MA model main unit
Bit6 =1, With ID protection
Bit7 =1, Emergency stop
Bit8 =1, Immediate I/O over range
Bit9 =1, System STACK error
Bit10 =1, ASIC failed
Bit11 =1, Function not allowed
Bit12 , Reserved
Bit13 =1, With communication board
Bit14 =1, With calendar
Bit15 =1, MC main unit
R4140
R4141
R4142
R4143
R4144
R4145
Telephone Number
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