NT21_Reference Manual (V069-E1-1) (986756), страница 86
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(Refer to2-17-1 Compatible Systems for a table of PCs thatsupport the Device Monitor function.)Set Comm. Method to NTLink (1:1 or 1:N)(when the Device Monitormenu is being displayed)Check the memory switches (fourth screen) and set theconnected PC’s serial port protocol to 1:1 NT Link or1:N NT Link. Set the same protocol in the PC.6-2-3 Errors Occurring on Screen Data Initialization and TransmissionThe table below shows the errors that can occur when the PT data is initialized,and during data setting and transmission, and their remedies.MessageCauseRemedy[Flash Memory Error]Flash Memory I/O Error.If this happens frequently, FlashMemory may be broken.Press Reset Switch to restart.There is a hardware fault, or theflash memory (memory forstoring screen data) has reachedthe end of its service life.If the same message is displayed even afterclearing the screen data or transmitting screendata several times, contact your nearestOMRON representative.[Calendar Data Error]Calendar Data is incorrect.Set to the MAINTENANCEMODE and set Calendar Data.(NT31/NT31C andNT631/NT631C only)Hardware fault, or systemprogram errorSet the calendar clock again from the SystemMenu.
If the problem recurs, delete the programin the System Installer mode, then re-install theprogram. (Refer to Section 6 of the SetupManual.)If this does not solve the problem, contact yournearest OMRON representative.[Tool Transmit Error]∗∗∗∗ Error detected whiledownloading by the followingcase:S faulty connecting cable.S corrupted data by noise.The connecting cable isdefective.Check the cable connection and perform aconductivity test. If there is a fault, replace thecable. (Refer to the appendix Making the Cablefor Connecting a PC in the Setup Manual.)Malfunction due to external noiseCarry out grounding work in accordance with theconditions.
(Refer to Grounding in section 3 inthe Setup Manual.)[Tool Transmit Error]Checksum Error occurs whiledownloading by the followingcase:S corrupted data by noise.Malfunction due to external noiseCarry out grounding work in accordance with theconditions. (Refer to Grounding in section 3 inthe Setup Manual.)[Tool Transmit Error]Time-out Error occurs whiledownloading by the followingcase:S faulty connecting cable.The connecting cable isdefective.Check the cable connection and perform aconductivity test.
If there is a fault, replace thecable.[Tool Transmit Error]Reception was failed by BufferOver Flow Error.The receive buffer hasoverflowed.Retransmit the data from the Support Tool.430SectionResponding to Displayed Error Messages6-26-2-4 Errors in the System Installer Mode and Their RemediesThis section describes the errors that may occur in the System Installer mode ofthe PT, and the remedies for these errors.MessageCauseRemedySystem Program not exist orincorrect.- The system program has notbeen installed.- The system program has beendeleted due to a hardwarefault, or because the flashmemory (memory for storingthe system program) hasreached its life.Select Download System Program anddownload the system program.
(Refer toClearing/Installing the System Program insection 6 in the Setup Manual.)If this does not solve the problem, contact yournearest OMRON representative.Unable to erase SystemProgram.Hardware fault, or flash memory(memory for storing the systemprogram) has reached its life.If the same message is displayed on repeatingselection of Download System Program andattempting to delete the system program severaltimes, contact your nearest OMRONrepresentative. (Refer to Clearing/Installing theSystem Program in section 6 in the SetupManual.)Unable to download SystemProgram.- A communication erroroccurred during downloadingof the system program.- Illegal data has been writteninto the screen data memory.- Hardware fault, or flashmemory (memory for storingthe system program) hasreached its life.Select Download System Program anddownload the system program again.
(Refer toClearing/Installing the System Program insection 6 in the Setup Manual.)Also refer to 6-2-3 Errors Occurring on ScreenData Initialization and Transmission (page 430),and take the corrective action described for tooltransmission errors.If this does not solve the problem, contact yournearest OMRON representative.Unable to write System Settings.Hardware fault, or flash memory(memory for storing the systemprogram) has reached its life.If the same message is displayed on repeatingwriting of system settings several times, contactyour nearest OMRON representative.If writing is normally terminated after the errormessage was once displayed, the MemorySwitch setting for system program may havebeen altered. In such a case, check and re-setthe setting in the Memory Switch menu of theMaintenance mode.Unable to erase Screen Data.Hardware fault, or flash memory(memory for storing the systemprogram) has reached its life.If the same message is displayed on repeatingscreen data deletion several times, contact yournearest OMRON representative.431Responding to Displayed Error MessagesSection6-26-2-5 Communication Errors and Their RemediesThis section describes the errors relating to communication that can occur during operation, and their remedies.Operation When aCommunication ErrorOccursWhen a communication error occurs, the error message is displayed at the PT,and the buzzer sounds, provided the setting made for Buzzer Sound in the System Menu is other than OFF.
An error message is displayed provided the settingfor the Comm. Auto-Return memory switch is not ON (note that some error messages are displayed even if the setting is ON).Operation WhenCommunication ErrorsOccurWhen an error message is displayed, press the OK touch switch displayed onthe screen. The PT will return to the screen that was displayed before the erroroccurred, and operation will restart.Display ofCommunication ErrorsFor communication errors, the name of the port at which the error occurred, theerror classification (send or receive error), the details of the error, the probablecause, and the remedy, are displayed as shown below.Example: Parity error at serial port AReceive ErrorsThe following errors can occur when receiving data.• Parity error• Framing error• Overrun error• FCS (sum value) error• Time out error• Data over flow error• PC unit No.
error (host link only)• NAK received (in the case of the host link, the end code is also displayed)• Undefined command errorSend ErrorsThe following errors can occur when receiving data.• Time out error• Data over flow error432SectionResponding to Displayed Error MessagesProbable Causes andRemediesError DetailsParity ErrorFraming ErrorOver-run Error6-2The remedies to take in accordance with the displayed cause are indicated in thetable below.Displayed Probable CauseRemedyCommunication parameters/conditions set incorrectly.Check if the settings at the host for parity bit, framelength, baud rate, stop bit length and flow controlagree with those at the PT.The connecting cables are notconnected correctly.Check the communication cable connection andperform a conductivity test.
If there is a fault,replace the cable. For details on communicationcables, refer to section 4 and section 5 in the SetupManual.Noise caused data corruption duringcommunication.Carry out grounding work in accordance with theconditions. (Refer to Grounding in section 3 in theSetup Manual.)Noise caused data corruption duringcommunication.Carry out grounding work in accordance with theconditions. (Refer to Grounding in section 3 in theSetup Manual.)The PC is transmitting incorrectdata.Check the operation at the host side.The connecting cables are notconnected correctly.
(Send/Receive)Check the communication cable connection andperform a conductivity test. If there is a fault,replace the cable.For details on communication cables, refer tosection 4 and section 5 in the Setup Manual.The communication service of thehost is stopped. (Send/Receive)Check that the host is capable of communicatingwith the PT (confirm that the communicationsettings of the host and PT match).Time-out Interval is too short. (Send)Set a longer value for Time-out Interval at the hostside.Time-out Interval is too short.(Receive)Set a longer value for Time-out Interval in theSystem Menu. (Refer to Setting the Time-outInterval in section 6 in the Setup Manual.) It mayalso be possible to solve the problem by shorteningthe host cycle time.The unit # does not match that seton the PC.Re-set the unit number at the host side to 0.Noise caused data corruption duringcommunication.Carry out grounding work in accordance with theconditions.
(Refer to Grounding in section 3 in theSetup Manual.)NAK received——Check the settings for allocated words and bits.If noise is a possible factor, distance the cable fromsources of noise and insert a noise filter in thepower supply line.If using the equipment in a location subject to a lotof noise, use a cable with a high degree ofprotection against noise for the transmission route.Also make the cable as short as possible.Undefined CommandEErrorThe host is not supported.Check the PC model used for the host.Command level 3 is not effective.Check that the command level setting for the host islevel 1, 2, 3.Data Over Flow ErrorCommunication command from thehost is too long.(With memory link)Set flow control method in the host.Increase transmission interval.Command transmission to the hostis not possible.Check the communication cable.Check the control method at the PT and the host.Increase the baud rate when it is too slow.FCS (Checksum) ErrorTime-out ErrorPC Unit No.
Error433Appendix ASpecificationsDisplay Capacityay elementntsDisplay elementnts Dispplayy elememennts DisplayItemSpecificationCharacter displays(fixed display)Fixed character data (character strings registered for each screen)Maximum combined total with other fixed display elements of 65535 per screen(maximum of 524280 for an overlapping screen)Character stringdisplaysUp to 256 per screen (1024 for an overlapping screen) (40 bytes per string)Numeral displaysUp to 256 per screen (1024 for an overlapping screen), max. 10-digit displayBar graph displaysUp to 50 per screen (400 for an overlapping screen*1), percentage display and signdisplay are possibleMark displays (fixeddisplay)Up to 65535 per screen (52480 for an overlapping screen*1)Analog meterUp to 50 per screen (400 for an overlapping screen*1), percentage display and signdisplay are possible.Trend graphsOne frame per screen (max.
of 8 frames on an overlapping screen)Without the data logging function: 50 graphs per screen data fileWith the data logging function:8 graphs per screen data fileBroken-line graphsOne frame per screen (max. of 8 frames on an overlapping screen), 256 graphs perframe, 260 point per graph (NT21), 320 points per graph (NT31/NT31C), or 512 pointsper graph (NT631/NT631C)Graphic displays (fixeddisplay)Can be displayed wherever requiredMaximum combined total with other fixed display elements of 65535 per screen(maximum of 524280 for an overlapping screen)LampsUp to 256 per screen (1024 for an overlapping screen)Touch switchesUp to 256 per screen (same restriction applies to overlapping screens)Image dataCombined total, with library data, of 256 per screen (1024 for an overlapping screen)Library dataCombined total, with image data, of 256 per screen (same restriction applies tooverlapping screens)NumeralinputsNumerickey typeNT21: Combined total, withthumbwheel switches, of256 per screen(Can only be registered onone child screen of anoverlapping screen)NT31/NT31C: Combinedtotal, with thumbwheelswitches, of 256 per screen(Can only be registered onone child screen of anoverlapping screen)Thumbwheel typeNT21: Up to 26 per screen(Can only be registered onone child screen of anoverlapping screen)NT31/NT31C: Up to 64 perscreen(Can only be registered onone child screen of anoverlapping screen)NT631/NT631C: Up to 256per screen including bothnumeric key type andthumbwheel type inputs.(Can only be registered onone child screen of anoverlappingli screen))Character string inputsUp to 256 per screen(Can only be registered on one child screen of an overlapping screen)Alarm listsUp to 4 groups per screen (32 groups for an overlapping screen)(Forhistories,1 group each(F alarmlhit ih iin occurrence orderd andd ffrequency orderd on normallscreens/child screens)*2Alarm historiesRecipeNormal screen: 1 max.; Multiple screens: 8 max.; Window screens: Not possibleClock displayNT31/NT31C, NT631/NT631C: Time display of the built-in clock using the numeraldisplay functionNT21: Display of time read from host using the numeral display function435Appendix ASpecificationsScrcreen typesty esItemSpecificationNormal screenThe normal screen displayOverlapping screensA maximum of 8 registered screens can be displayed overlapped with each other.Window screensUp to 3 screens (2 local windows and 1 global window) can be displayed at the sametime.
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