| EW_PROTOCOL (-17)
 | Protocol error (Ethernet version only) | Data from Ethernet Board is incorrect. Contact with the service section or the section in charge.
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| EW_SOCKET (-16)
 | Socket error (Ethernet version only) | Investigate CNC power supply, Ethernet cable and I/F board. | 
| EW_NODLL (-15)
 | DLL file error | There is no DLL file for each CNC series corresponding to specified node. | 
| EW_BUS (-11)
 | Bus error (HSSB version only) | A bus error of CNC system occurred. Contact with the service section or the section in charge.
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| EW_SYSTEM2 (-10)
 | System error (2) (HSSB version only) | A system error of CNC system occurred. Contact with the service section or the section in charge.
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| EW_HSSB (-9)
 | Communication error of HSSB (HSSB version only) | Investigate the serial line or I/F board of HSSB. | 
| EW_HANDLE (-8)
 | Handle number error | Get the library handle number. | 
| EW_VERSION (-7)
 | Version mismatch between the CNC/PMC and library | The CNC/PMC version does not match that of the library. Replace the library or the CNC/PMC control software.
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| EW_UNEXP (-6)
 | Abnormal library state | An unanticipated error occurred. Contact with the section in charge.
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| EW_SYSTEM (-5)
 | System error (HSSB version only) | A system error of CNC occurred. Contact with the service section or the section in charge.
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| EW_PARITY (-4)
 | Shared RAM parity error (HSSB version only) | A hardware error occurred. Contact with the service section.
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| EW_MMCSYS (-3)
 | FANUC drivers installation error (HSSB version only) | The drivers required for execution are not installed. | 
| EW_RESET (-2)
 | Reset or stop request | The RESET or STOP button was pressed. Call the termination function.
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| EW_BUSY (-1)
 | Busy | Wait until the completion of CNC processing, or retry. | 
| EW_OK (0)
 | Normal termination |  | 
| EW_FUNC (1)
 | Error(function is not executed, or not available) | Specific function which must be executed beforehand has not been executed. Otherwise that function is not available.
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| EW_LENGTH (2)
 | Error(data block length error, error of number of data) | Check and correct the data block length or number of data. | 
| EW_NUMBER (3)
 | Error(data number error) | Check and correct the data number. | 
| EW_ATTRIB (4)
 | Error(data attribute error) | Check and correct the data attribute. | 
| EW_DATA (5)
 | Error(data error) | Check and correct the data. For the following operations, this code indicates that the specified program cannot be found.
 
Delete specified programSearch specified programStart uploading NC program | 
| EW_NOOPT (6)
 | Error(no option) | There is no corresponding CNC option. | 
| EW_PROT (7)
 | Error(write protection) | Write operation is prohibited. | 
| EW_OVRFLOW (8)
 | Error(memory overflow) | CNC tape memory is overflowed. | 
| EW_PARAM (9)
 | Error(CNC parameter error) | CNC parameter is set incorrectly. | 
| EW_BUFFER (10)
 | Error(buffer empty/full) | The buffer is empty or full. Wait until completion of CNC processing, or retry.
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| EW_PATH (11)
 | Error(path number error) | A path number is incorrect. | 
| EW_MODE (12)
 | Error(CNC mode error) | The CNC mode is incorrect. Correct the CNC mode.
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| EW_REJECT (13)
 | Error(CNC execution rejection) | The execution at the CNC is rejected. Check the condition of execution.
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| EW_DTSRVR (14)
 | Error(Data server error) | Some errors occur at the data server. | 
| EW_ALARM (15)
 | Error(alarm) | The function cannot be executed due to an alarm in CNC. Remove the cause of alarm.
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| EW_STOP (16)
 | Error(stop) | CNC status is stop or emergency. | 
| EW_PASSWD (17)
 | Error(State of data protection) | Data is protected by the CNC data protection function. |