Fanuc 15 Alarms, Faults & Error Codes

Fanuc 15 alarms, and 15M, 15T series faults and common error codes.

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These alarm codes relate to Model B

Servo Alarms

Alarm Code	Type	Description of Alarm/Fault
SV 000	TACHOGENERATER DISCONNECT	The tachogenerator is disconnected.
SV 001	EXCESS CURRENT IN SERVO	The servo motor was overloaded.
SV 002	BREAKER (FEED_CTL_UNIT) OFF	The breaker for the velocity control ciruit tripped.
SV 003	ABNORMAL CURRENT IN SERVO	Excessive current was detected in the velocity control circuit.
SV 004	EXCESS V TO MOTOR	Excessive current was detected in the velocity control circuit.
SV 005	EXCESS DISCHARGE I FROM MOTOR	Excessive discharge current from the motor was detected in the velocity control circuit.
SV 006	VELOCITY UNIT POWER TOO LOW	Low voltage was detected in the velocity control circuit.
SV 008	EXCESS ERROR ( STOP)	Position deviaton when stopped is larger than the value set in parameter No. 1829
SV 009	EXCESS ERROR (MOVING)	Position deviaton when stopped is larger than the value set in parameter No. 1828
SV 0010	EXCESS DRIFT COMPENSATION	Drift compensation is excessive ( exceeded 500VELO)
SV 011	LSI OVERFLOW	The value specified for position deviation compensation is not within the range of -32767 to +32767, or the command value of the D/A converter is not within the range of -8192 to +8192. In general, this alarm occurs to incorrect settings.
SV 012	MOTION VALUE OVERFLOW	A speed greater than 512,000 pulses per second ( frequency converted into detection units) was specified. In general, this alarm occurs to incorrect setting of parameter CMR or the feedrate.
SV 013	IMPROPER V-READY OFF	The speed control ready signal ( VRDY) went off even though the position control ready signal (PRDY) was on. When a multiaxis amplifier is being used, specifying controlled axis detatchment for any axis driven by the amplifier causes alarm SV013 to be issued from the other axes driven by that amplifier.
SV 014	IMPROPER V READY ON	The speed control ready signal (VRDY) went on even though the position control ready signal (PRDY) was off.
SV 015	PULSE CODER DISCONNECTED	The pulse coder is disconnected.
SV 017	ILL POSITION CONTROL LSI	A fault occured in the LSI for position control.
SV 018	INCORRECT DSCG FREQUENCY	A fault was detected in a resolver or inductsyn feedback frequency.
SV 019	INCORRECT PULSE CODER PULSE	A fault was detected in the feedback pulse from the pulse coder.
SV 020	INCORRECT PHASE SHIFT VALUE	The resolver or induction phase shift cannot be obtained correctly.
SV 021	1-REV PULSE SIGNAL INCORRECT	The single revolution signal for the pulse coder went on at an incorrect position
SV 022	1-REV PULSE MISSING	The single revolution signal for the pulse coder went on at an incorrect position
SV 023	SV OVERLOAD	A servo motor overloaded
SV 024	EXCESS ERROR ALARM 2	Alarm 2 for excess synchronous error was generated.
SV 025	V-READY ON (INITIALIZING)	During servo control, the speed control ready signal ( VRDY) is on even though it is supposed to be off.
SV 026	ILLEGAL AXIS ARRANGEMENT	Parameter NO. 1023 for specifying the arrangement of servo axes is set incorrectly.
SV 027	ILL DGTL SERVO PARAMETER	There is an illegal digital servo parameter. A correct motor model type is not set in parameter NO. 1874 The number of pulses per motor rotation is not set in parameter NO. 1876 The direction of motor rotation set in parameter NO. 1879 is neither 111 nor -111.
SV 030	EMERGENCY STOP	Emergency stop occured ) when ENR, a bit of parameter NO. 2001, is 1)
SV 031	EXCESS SPINDLE DIST ( SPDL)	Excess position deviation occured for the spindle during rigid tapping.
SV 032	LSI OVERFLOW (SPDL)	Data for the LSI used for spindle control overflowed during rigid tapping.
SV 050	ILLEGAL AXIS SYNCHRONZIATION	Parameter No. 1023 is set incorrectly.
SV 055		Parameter No. 1023 is set incorrectly.
SV 056		Bit#6 of parameter NO. 1817 is set incorrectly.
SV 99	SPINDLE AXIS ERROR	An amplifier alarm occured during spindle contour control.
SV 100	SACOMP, VALUE OVERFLOW	The value set for straightness compensation is not withink the range of -32767 to +32767.
SV 101	DATA ERROR (ABS PCDR)	A correct machine position cannot be obtained because the absolute pulse coder is faulty or the machine moved far during power on.
SV 110	PULSE CORDER ALARM (SERIAL A)	An error was detected in the serial pulse coder ( seriall C) or feedback cable.
SV 111	PULSE CORDER ALARM (SERIAL C)	The serial pulse coder is abnormal.
SV 114	ABNORMAL REV.DATA (SERIAL A)	The serial pulse coder (Serial A) is abnormal.
SV 115	ABNORMAL COMMUNICATION(SPLC)	A serial pulse coder communication failure occured.
SV 116	MCC WELDING ALARM	The contact of the magnectic contractor (MCC) in the servo amplifier has melted.
SV 117	ABNORMAL CURRENT OFFSET	Digital servo current conversion is abnormal.
SV 118	DETECT ABNORMAL TORQUE	An abnormal servo motor load was detected.
SV 119	DETECT ABNORMAL TORQUE (1ST SPDL)	An abnormal load was detected on the first spindle motor.
SV 125	EXCESS VELOCITY IN TORQUE	In torque control, the specified maximum allowable velocity was exceeded.
SV 126	EXCESS ERROR IN TORQUE	In torque control, the maximum allowable accumlated movement specified with a parameter was exceeded.
SV 323	DISCONNECT ALARM BY SOFT	Disconnection of the serial pulse coder was detected. ( Software)
SV 324	DISCONNECT ALARM BY HARD	Disconnection of the serial pulse coder was detected. ( Hardware)
SV 325	PULSE CODER ALARM1 (SPLC)	An abnormality was detected in the serial pulse coder or feedback cable ( Built in unit)
SV 326	PULSE CODER ALARM3 (SPLC)	An abnormality was detected in the serial pulse coder or feedback cable ( Built in unit)
SV 327	ABNORMAL REV.DATA (SPLC)	The serial pulse coder is abnormal. Replace the pulse coder ( Built in unit)
SV 330	ABNORMAL COMMUNICATION (SPLC)	A serial pulse coder communication error occured ( Built in unit)
SV 331	PULSE CODER ALARM2 (SPLC)	An abnormality was detected in the serial pulse coder or feedback cable. ( Built in unit)
SV 333	PULSE CODER ALARM4 (EX-LIN)	An abnormality was detected in the serial pulse coder or feedback cable. ( seperate linear)
SV 334	PULSE CODER ALARM5 (EX-ROT)	An abnormality was detected in the serial pulse coder or feedback cable. ( seperate rotary)
SV 335	ABNORMAL REV.DATA ( EX-ROT)	The serial pulse coder is abnormal.
SV 336	BATTERY ZERO (EX)	The serial pulse coder battery voltage is 0V. ( Seperate unit)
SV 338	DETECTOR OVERLOAD (EX)	The serial pulse coder is overloaded ( Seperate unit ).
SV 339	ABNORMAL COMMUNICATION ( EX)	A communication error occured in the serial pulse coder ( Seperate unit)
SV 340	PULSE CODER DISCONNECT ( EX)	Disconnection of the serial pulse coder was detected ( Seperate unit).

PC Error Alarms

Alarm Code
PC 010	PC ERROR	A parity error occured in a PMC ROM.
PC 020	PC ERROR	A parity error occured in a PMC RAM.
PC 030	PC ERROR	An I/O unit was not allocated correctly.
PC 500	WATCH DOG ALARM	A PMC watch dog alarm occured.

Memory File Alarms

Alarm Code	Type	Description of Alarm/Fault
IO 030	CHECK SUM ERROR	The check sum for a page of NC memory is incorrect.
IO 031	INVALID CODE	An invalid code was read from NC memory.
IO 032	OUT OF RANGE MEMORY	An attempt was made to read data from or write data to an address outsid of bubble memory.

Power Off Alarms

Alarm Code	Type	Description of Alarm/Fault
PW 000	POWER MUST BE OFF	A parameter was set for which the power must be turned off and then on again.
PW 100	ILLEGAL PARAMETER	The parameter for setting straightness compensation or the parameter for setting inclination compensation is specified incorrectly.

Graphic RAM Parity Alarms

Alarm Code	Type	Description of Alarm/Fault
SB 010	GRAPHIC RAM PARITY	A parity error occured in the graphic ROM .
SB 011	GRAPHIC RAM PARITY (WORK)	A parity error occured in the graphic work ROM.
SB 011	GRAPHIC RAM PARITY (RED)	A parity error occured in the RAM for red graphics.
SB 011	GRAPHIC RAM PARITY (GREEN)	A parity error occured in the RAM for green graphics.
SB 011	GRAPHIC RAM PARITY (BLUE)	A parity error occured in the RAM for blue graphics.

Parameter Alarms

Alarm Code	Type	Description of Alarm/Fault
SW 000	PARAMETER ENABLE SWITCH ON	Parameter setting is enabled. ( PWE, a bit of parameter NO. 8000 is 1)

Overtravel Alarms

Alarm Code	Type	Description of Alarm/Fault
OT 001	+ OVERTRAVEL (SOFT1)	Coordinates specified in an absolute or machine coordinate system are out of range.
OT 002	– OVERTRAVEL (SOFT1)
OT 003	+ OVERTRAVEL (SOFT1)
OT 004	– OVERTRAVEL (SOFT1)
OT 005	+ OVERTRAVEL (SOFT1)
OT 006	– OVERTRAVEL (SOFT1)
OT 007	+ OVERTRAVEL (SOFT1)
OT 008	– OVERTRAVEL (SOFT1)
OT 021	+ OVERTRAVEL (SOFT1)
OT 022	– OVERTRAVEL (SOFT1)
OT 030	EXCESS ERROR ALARM 1
OT 031	SYNCHRONIZE ADJUST MODE
OT 032	NEED ZRN (ABS PCDR)	The counter value of the absolute pulse coder does not match the machine coordinates.
OT 034	BATTERY ZERO (ABS PCDR)	The battery voltage of the absolute pulse coder is 0V.
OT 036	BATTERY DOWN (SPLC)	The battery voltage of the serial pulse coder is low.
OT 037	BATTERY DOWN (EX)	The battery voltage of the additional detector is low.
OT 038	BATTERY ZERO (SPLC)	The serial pulse coder battery voltage is 0V
OT 039	BATTERY ZERO (EX)	The serial pulse coder battery voltage is 0V
OT 100	SPINDLE ALARM	The serial pulse coder battery voltage is 0V
OT 101	SPINDLE MOTOR OVERHEAT	The spindle motor overheated
OT 102	EXCESS VELOCITY (ANALOG)
OT 103	FUSE F7 BLEW	Fuse F7 for the speed control unit of the spindle motor has blown.
OT 104	FUSE F1, F2, OR F3 BLEW	Fuse F1, F2, F3 for the speed control unit of the spindle motor has blown.
OT 105	FUSE AF2 OR AF3 BLEW	Fuse AF2 or AF3 for the speed control unit of the spindle motor has blown.
OT 106	EXCESS VELOCITY (ANALOG)	The speed of the spindle motor exceeded the max rating .
OT 107	EXCESS VELOCITY (DIGITAL)	The speed of the spindle motor exceeded the max rating .
OT 108	VOLTAGE (+24V) TOO HIGH	The voltage of thee 24V power supply for the speed control unit of the spindle is too high.
OT 109	POWER SEMICONDUCTOR OVERLOAD	The power semiconductor overheated.
OT 110	VOLTAGE (+15) TOO LOW	The voltage of the 15V power supply for the speed control unit of the spindle is too low.
OT 111	VOLTAGE EXCESS (DC LINK)	The voltage in the DC link for the speed control unit of the spindle motor is too high.
OT 112	CURRENT EXCESS LINK (DC LINK)	The current in the DC link for the speed control unit of the spindle motor is excessive.
OT 113	CPU ERROR	The CPU or peripheral circuit of the speed control unit of the spindle motor is faulty.
OT 114	ROM ERROR	The ROM of the speed control unit if the spindle motor is faulty.
OT 115	OPTION ALARM	Optional alarm for the spindle motor
OT 116	DISCONNECTION POS CODER	The position coder is disconnected
OT 117	SPINDLE OVERHEAT	Spindle alarm was detected by the function for detecting fluctuations in spindle speed.
OT 120	UNASSIGNED ADDRESS (HIGH)	The upper four bits (EIA4 to EIA7) of an external data I/O interface address signal are set to an undefined address (high bits).
OT 121	UNASSIGNED ADDRESS (LOW)	The lower four bits (EIA0 to EIA3) of an external data I/O interface address signal are set to an undefined address (low bits).
OT 122	TOO MANY MESSAGES	Requests were made to display more than four external operator messages or external alarm messages at the same time.
OT 123	MESSAGE NUMBER NOT FOUND	An external operator message or external alarm message cannot be cancelled because no message number is specified.
OT 124	OUTPUT REQUEST ERROR	An output request was used during external data output, or an output request was issued for an address that has no output data.
OT 125	TOO LARGE NUMBER	A number outside of the range 0 to 999 was specified as the number for an external operator message or an external alarm message.
OT 126	SPECIFIED NUMBER NOT FOUND	This alarm occurs in the following cases: The number specified for a program number or sequence number search during external data input could not be found. The number specified for a work piece number search could not be found. There was an I/O request issued for a pot number or offset, but either no tool numbers have been input since power on or there is no data for the entered tool number.
OT 127	DI.EIDHW OUT OF RANGE	The value input by external data input signals EID32 to EID47 is out of range.
OT 128	DI.EIDLL OUT OF RANGE	The value input by external data input signals EID0 to EID31 is out of range.
OT 129	NEGATE POS CODER 1 REV ON	The CPU or peripheral circuit of the position coder is faulty.
OT 130	SEARCH REQUEST NOT ACCEPTED	No request can be accepted for a program No or sequence No search because the system is not in memory mode or the reset state.
OT 131	EXT-DATA ERROR (OTHER)	An input request was received for a pot No or offset value while tool data was being registered with G10. An error occurred during reading or writing of tool data.
OT 132	RETURN ERROR (PTRR)	The tool did not return to the stored position along the axis in tool retraction mode.
OT 150	A/D CONVERT ALARM	The A/D converter is faulty
OT 151	A/D CONVERT ALARM	The A/D converter is faulty
OT 184	PARAMETER ERROR IN TORQUE	An invalid parameter was specified for torque control.
OT 200	INTERFERENCE DATA ERROR	The tool figure specified for the tool post interference check is incorrect.
OT 208	INTERFERENCE X1 MINUS	An interference alarm occurred while the first tool post was moving in the negative direction along the X axis
OT 209	INTERFERENCE X1 PLUS	An interference alarm occurred while the first tool post was moving in the positive direction along the X axis
OT 210	INTERFERENCE Z1 MINUS	An interference alarm occurred while the first tool post was moving in the negative direction along the Z axis
OT 211	INTERFERNCE Z1 PLUS	An interference alarm occurred while the first tool post was moving in the positive direction along the Z axis
OT 212	INTERFERENCE X2 MINUS	An interference alarm occurred while the second tool post was moving in the negative direction along the X axis
OT 213	INTERFERENCE X2 PLUS	An interference alarm occurred while the second tool post was moving in the positive direction along the X axis
OT 214	INTERFERENCE Z2 MINUS	An interference alarm occurred while the second tool post was moving in the positive negative along the Z axis
OT 215	INTERFERENCE Z2 PLUS	An interference alarm occurred while the second tool post was moving in the positive direction along the Z axis
OT 300	S-SPINDLE LSI ERROR	An error occurred in communication with spindle
OT 301	MOTOR OVERHEAT	Motor overheat
OT 302	EX DEVIATION SPEED	Excessive deviation in speed
OT 307	OVER SPEED	Excessive speed
OT 309	OVERHEAT MAIN CIRCUIT	Excessive load on the main circuit
OT 310	LOW VOLT INPUT POWER	Low voltage in the input power supply
OT 311	OVERVOLT POW CIRCUIT	Excessive voltage in the DC link
OT 312	OVERCURRENT POW CIRCUIT	Excessive current in the DC Link
OT 313	DATA MEMORY FAULT CPU	Error in CPU internal data memory
OT 318	SUMCHECK ERROR PGM DATA	Sum check error in ROM
OT 319	EX OFFSET CURRENT U	Excessive offset in U phase current detection circuit.
OT 320	EX OFFSET CURRENT V	Excessive offset in V phase current detection circuit.
OT 324	SERIAL TRANSFER ERROR	Error in serial data transfer
OT 325	SERIAL TRANSFER STOP	Serial data transfer was stopped
OT 326	DISCONNECT C-VELO DETECT	The Cs axis control speed detection signal is disconnected
OT 327	DISCONNECT POS-CODER	The position coder is disconnected
OT 328	DISCONNECT C-POS DETECT	The Cs axis control speed detection signal is disconnected
OT 329	OVERLOAD	Temp overload
OT 330	OVERCURRENT POWER CIRCUIT	Excessive current in input circuit
OT 331	MOTOR LOCK OR V-SIG LOS	The motor locked up alarm is issued or the speed detection signal is disconnected
OT 332	RAM FAULT SERIAL LSI	Faulty RAM exists in LSI for serial data transfer
OT 333	SHORTAGE POWER CHARGE	Insufficient power charge in DC link
OT 334	PARAMETER SETTING ERROR	Parameter data is out of range
OT 335	EX SETTING GEAR RATIO	An excessive gear ration was set
OT 336	OVERFLOW ERROR COUNTER	The error counter overflowed
OT 399	S-SPINDLE ERROR	Misc spindle amplifier alarm has occured
OT 512	EXCESS VELOCITY	The feedrate specified during polar coordinate interpolation mode was greater than the max cutting feedrate.
OT 513	SYNC EXCESS ERROR	The difference between the positional deviations for the synchronized axes during simple synchronization was greater than the limit set in the parameter.
OT 513	SYNC EXCESS ERROR	The difference between the master and the slave axes to be synchronized with each other has exceeded the maximum compensation.

SR Alarms

Alarm Code	Type	Description of Alarm/Fault
SR 160	INTERNAL DATA OVER FLOW	Coordinates specified in an absolute or machine coordinate system are out of range.
SR 310	H, S , C ERROR	G10.3, G11.3 or G65.3 is used incorrectly.
SR 311	H, S , C ERROR	A command not permitted during high speed machining was specified.
SR 312	H, S , C ERROR	Address P, Q or L is out of range.
SR 313	H, S , C ERROR	High speed machining data does not exist for the number that was called.
SR 314	H, S , C ERROR	No cluster exists for the number that was called.
SR 315	H, S , C ERROR	An attempt was made to register a number for which high speed machining data already exists.
SR 316	H, S , C ERROR	Memory is full.
SR 317	H, S , C ERROR	The maximum number of sets of high speed machining data has been registered.
SR 318	H, S , C ERROR	An attempt was made to register high speed machining data during background editing.
SR 319	H, S , C ERROR	There is an error in the format of high speed machining data.
SR 320	H, S , C ERROR	A macro interrupt occurred during high speed machining.
SR 424	OVER MAXIMAM TOOL DATA	An attempt was made to register new tool data even though the maximum number of sets of tool data has already been set.
SR 590	TH ERROR	TH alarm.
SR 591	TV ERROR	TV alarm
SR 592	END OF RECORD	EOR ( END OF RECORD) was specified partway though a block.
SR 600	PARAMETER OF RESTART ERROR	There is an error in the specification of the program restart parameter.
SR 805	ILLEGAL COMMAND	An attempt was made to used an illegal command for the reader /punch interface.
SR 806	DEVICE TYPE MISMATCH	An attempt was made to use a command which is invalid for the currently selected I/O device.
SR 807	PARAMETER SETTING ERROR	An I/O interface which was not selected as an option was specified, or the settings or parameters are set incorrectly.
SR 810	PTR NOT READY	The ready signal for the tape reader is off.
SR 812	OVERRUN ERROR (PTR)	The next character was received by the tape reader before it could read a previously received character.
SR 820	DR OFF (1)	The data set ready signal for reader/punch interface 1 went off.
SR 821	CD OFF (1)	The signal quality detection signal for reader /punch interface 1 went off.
SR 822	OVERRUN ERROR (1)	The next character was received by puncher/punch interface 1 before it could read a previously received character.
SR 823	FRAMING ERROR (1)	No stop bit was detected for a character received by reader/punch interface 1.

SR 824	BUFFER OVERFLOW(1)	The NHC received more than ten characters of data from reader/punch interface 1 even though NC sent a stop mode during data reception.
SR 830	DR OFF (2)	The data set ready signal for reader/punch interface 2 went off.
SR 831	CD OFF(2)	The signal quality detection signal for reader /punch interface 2 went off.
SR 832	OVERRUN ERROR(2)	The next character was received by reader/punch interface 2 before it could read a previously received character.
SR 833	FRAMING ERROR(2)	No stop bit was detected for a character received by the reader/punch interface 2
SR 834	BUFFER OVERFLOW(2)	The NC received more than ten characters of data from reader/punch interface 2 even though the NC sent a stop code during data reception.
SR 840	DR OFF(3)	The data set ready signal for reader/punch interface 2 went off.
SR 841	DC OFF (3)	The signal quality detection signal for reader/punch interface 3 went off.
SR 842	OVERRUN ERROR(3)	The next character was received by reader/punch interface 3 before it could read a previously read character.
SR 843	FRAMING ERROR(3)	No stop bit was detected for a character received by reader/punch interface 3.
SR 844	BUFFER OVERFLOW(3)	The NC received more than ten characters of data from reader/punch interface 3 even though the NC sent a stop code during data reception.
SR 860	DATA SET READY DOWN(ASR33/43)	The data set ready signal for the 20mA current loop interface went off.
SR 861	CARRIER DETECT DOWN(ASR33/43)	The signal quality detection signal for the 20mA current loop interface went off.
SR 862	OVERRUN ERROR(ASR33/43)	The next character was received by the 20mA current loop interface before it could read a previously received character.
SR 863	FRAMING ERROR(ASR33/43)	No stop bit was detected for a character received by the 20mA current loop interface.
SR 864	BUFFER OVERFLOW(ASR33/43)	The NC received more than ten characters of data from the 20mA current loop interface even though the NC sent a stop code during data reception.
SR 870	DATA SET READY DOWN	The data mode signal for the RS-422 interface went off.
SR 872	OVERRUN ERROR (RS422)	The next character was received by the RS-422 interface before it could read a previously received character.
SR 873	FRAMING ERROR (RS422)	No stop bit was detected for a character received by the RS-422 interface.
SR 874	BUFFER OVERFLOW (RS422)	The NC received more than ten characters of data fro the RS-422 interface even though the NC sent a stop code during data reception.
SR 880	NOT DRAWING	Communication cannot be made with the graphic CPU.
SR 890	CHECK SUM ERROR (G05)	A check sum error occured ( high speed remote buffer)

Overheat Alarms

Alarm Code	Type	Description of Alarm/Fault
OH 000	MOTOR OVERHEAT	A servo motor overheated
OH 001	LOCKER OVERHEAT	The NC cabinet overheated