FANUC 15 Alarms
Fanuc 15 Alarms, Faults & Error Codes
Fanuc 15 alarms, and 15M, 15T series faults and common error codes.
Please contact us if you need testing, a repair or an exchange part. Or please visit our dedicated Fanuc Series 15 Page.
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.
|
| 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 |