NT21_Setup Manual (V068-E1-1) (986757), страница 31
Текст из файла (страница 31)
If there is an error,contact your OMRON service center.The PC mode haschanged to the monitormode.The NT21 changes the mode whenhost link communication is used.This is an NT21 specification. When using a PC thatcan also be connected using the NT Link method,use an NT Link connection (there is no mode tochange with the NT Link method).The graph display doesnot update.One of the percentage displaysettings — –100%, 0%, or 100% —is incorrect.Set the –100%, 0%, and 100% values in thefollowing relationship:–100% value < 0% value < 100% value174SectionTroubleshootingNT21 SymptomsCause7-1RemedyThe trend graph displaydoes not agree with theactual time axis.The cycle for graph display updateprocessing is longer than the setsampling cycle.Delete other elements on the same screen as thetrend graph that are allocated to the host and havea high update frequency.
Or lengthen the samplingcycle.The ProgrammingConsole function cannotbe used.The communication settings areincorrect.Set the communication method as follows whenusing the Programming Console function.S With C-series PLC: 1:1 NT LinkS With CS/CJ-series PLC:1:N NT Link (standard or high-speed)A Programming Console isconnected.The Programming Console and the ProgrammingConsole function can be used at the same time inCS/CJ series PCs only.
If another model of PC isbeing used, disconnect the Programming Console.The PC does not support theProgramming Console function.Not all PCs support the Programming Consolefunction. Check the model of PC you are using.(6-12 Programming Console Function, page 165)Since the memory table is allocatedto the host memory, the display isupdated in accordance with thecontents of the host memory.When the contents of the memory table are set as afixed values, do not allocate the memory table to thehost memory.An optional battery was installed, butthe battery has weakened and thedata in the memory table has beenlost.Replace the battery and initialize the memory table.(7-3-1 Installing or Replacing the Battery, page 184,and 6-4-4 Initializing the Memory Tables, page 114)An optional battery was installed andthe resume function is set to ON, sothe initial values set with the NTSupport Tool are not reflected in thememory tables.Execute memory table initialization.
(6-4-4Initializing the Memory Tables, page 114)If the resume function does not need to be used, setthe NT21 with the resume function OFF. (6-9-12Setting the Resume Function, page 140)The numeral memory table isspecified as the destination for amathematical table results.Calculations are executed continuously while the PTis operating and the calculation results areautomatically written to the memory table. Specifyanother numeral memory table entry or a word inthe host.Malfunction due to external noiseCarry out grounding work in accordance with theconditions by referring to 3-1-4 Grounding, page 18.There are too many numeral/textdisplays on the displayed screen.Reduce the number of numeral/text displays on thescreen for which updating is delayed.The cycle time is extended due toheavy processing at the host.Shorten the host cycle time.In an RS-422A/485 connection,there is illegal branching or anerroneous terminator setting.Wire correctly by referring to Section 5 Connectingto the Host from the RS-422A/485 Port.Some of the elementsarrangedon a normalaa ged oo ascreen are not displayed.The quantity of read data exceedsthe stipulated restriction.Check the maximum number of elements byreferringe e g to Displaysp ay Restrictionsest ct o s in Appendixppe d A ofo thet efReferenceManual.
CCreate the screen data againand then transmit all of the screen data in a batch tothe NT21.On overlapping screens,some of the set elementsare not displayed.Since the data is transmitted fromthe host in screen units, the numberof elements on the overlappingscreens has exceeded the maximumpermissible without being checkedby the NT Support Tool.Check the maximum number of elements byreferring to Display Restrictions in Appendix A of theReference Manual. Create the screen data againand then send all the screen data in a batch to theNT21.The System Menu cannotbe called up.Display System Menu under ChangeSystem Settings in the SystemInstaller mode is set to Disabled.In the System Installer mode, set Display SystemMenu to Enabled (page 121).The memory table displaycontents differ from theinitial value set at the NTpp Tool.SupportUpdating of numerica ues ad tesvaluesandtextt isdelayed.The total of the element coefficientsfor the displayed screen is greaterthan 1024.175SectionResponding to Displayed Error MessagesNT21 SymptomsCause7-2RemedyThe following SystemMenu operations are notpossible.- Establishing theTransmit mode- Displaying the memoryswitch setting screens- Screen data memorycheck- Displaying theinitialization menuScreen Memory Protect underChange System Setting in theSystem Installer mode is set toDisabled.In the System Installer mode, set Screen MemoryProtect to Enabled (page 121).Screen Memory Protect has beenset to Disabled because the PTpower supply was turned OFF duringdeletion of screen data.Do not turn the PT power OFF during deletion ofscreen data.In the System Installer mode, first change thesetting for Screen Memory Protect to Enabled, thenrepeat the screen data delete operation (pages 121and 121)Cannot input numericvaluesThe upper/lower (max./min.) limitcheck for numeric value input is ineffect.Check the screen data’s upper/lower (max./min.)limit check setting for numeric value input, andcorrect it if necessary.
Refer to 2-12 InputtingNumeric Values in the Reference Manual for details.Cannot input numericvalues/character strings.Bit 5 of the PT Status Control Area(numeral/character string input) isset to 1 (ON).Set bit 5 to 0 (OFF). Refer to 2-2-1 PT StatusControl Area (Host ↔ PT) in the Reference Manualfor details.The interlock function is set for theinput field and the controllinginterlock bit is OFF.Inputs are prohibited in input fields when thecorresponding interlock bit is OFF. Check the statusof the corresponding interlock bit and turn it ON.Window screen does notopenBit 6 of the PT Status Control Area(PT window opening) is set to 1(ON).Set bit 6 to 0 (OFF). Refer to 2-2-1 PT StatusControl Area (Host ↔ PT) in the Reference Manualfor details.Cannot switch screenswith touch switchesBit 4 of the PT Status Control Area(PT screen switching) is set to 1(ON).Set bit 4 to 0 (OFF).
Refer to 2-2-1 PT StatusControl Area (Host ↔ PT) in the Reference Manualfor details.Touch switch does notwork. (Buzzer sounds.)The interlock function is set for thetouch switch and the controllinginterlock bit is OFF.Touch switches are disabled when thecorresponding interlock bit is OFF. Check the statusof the corresponding interlock bit and turn it ON.The display is dim.The contrast setting is too low.Increase the contrast with the contrast adjustmenton the back of the NT21.Backlight defective, or its life hasexpired.Contact your OMRON service center. (The backlightcannot be removed.)The display is too faint.The contrast setting is too high.Reduce the contrast with the contrast adjustment onthe back of the NT21.The digits in numeraldisplay come out as *.The number of digits of a numericvalue in a numeral memory tableentry exceeds the set number.• Confirm the values of the PC words allocated to thenumeral memory table.7-2• Allocate one PC word to each numeral memorytable entry.Responding to Displayed Error MessagesWhen the NT21 displays an error message, find the corresponding symptoms inthe appropriate table below and respond by following the Remedy indicated inthe table.
For details of the error messages displayed when using Memory Unitand corrective action to take for them, refer to 3-5 Using a Memory Unit in page31.176SectionResponding to Displayed Error Messages7-27-2-1 Errors Occurring at Start of Operation and Their RemediesThe table below shows the errors that can occur when the power to the NT21 isturned ON and when operation starts, and their remedies.CauseRemedy[No Comm. Protocol]Set the comm. Protocol byMAINTENANCE MODE.MessageNo communication protocol hasbeen set.Communication protocol andscreen data type are mismatchedUsing the memory switches, set thecommunication method to be used forcommunication with the host.
(6-7 SettingConditions for Communications with Hostby Using Memory Switches, page 125)[Screen Data Error]Screen Data corrupted.Initialize Screen Memory, and downloadScreen Data again.- The power was switched OFFduring screen datainitialization, checking, ortransmission.- Transmission of screen datawas interrupted.- Illegal data has been written tothe screen data memory.Initialize the screen data memory byoperation at the System Menu, thenre-transmit the screen data. (6-4-1Clearing Screen Data, page 110)If the problem persists, contact yourOMRON service center.[No Screen Data]No Screen Data is saved in ScreenMemory.Download Screen Data using by the NTSupport Tool.No screen data is registered.Transmit screen data from the NTSupport Tool.[No Direct Connection Info.]No Direct Connection Information is setin Screen Data.Set Direct Connecting Information inScreen Data using by the NT SupportTool.
Then set the PT to the TRANSMITMODE and download Screen Dataagain.Allocated words have not beenset for the PT Status ControlArea and PT Status Notify Area.Allocate words for the PT Status ControlArea and PT Status Notify Area with theNT Support Tool and then transmit thedirect connection information to theNT21.[Incorrect Screen Data]Screen Data in Screen Memory do notmatch with the System Program.Initialize Screen Memory, and downloadScreen Data again.The type of registered screendata does not match that at theNT21.Initialize the screen data memory, thentransmit the correct screen data.
(6-4-1Clearing Screen Data, page 110)[No Starting Screen]Specified Starting Screen is not saved.Fix Screen Data using by the NTSupport Tool.Then set the PT to the TRANSMITMODE and download Screen Dataagain.No data is registered for eitherthe screen number set in the PTStatus Control Area or the InitialScreen set with the NT SupportTool.Or screen numbers that do notexist are registered.Either specify a screen number for whichdata is registered at the PT StatusControl Area, or set the screen as theInitial Screen in the System settingsunder PT Configuration at the NTSupport Tool.[Memory Switch Corrupted]Because Memory Switch setting waslost. Initialized Memory Switch setting.Press Confirm to return to the SYSTEMMENU.The memory switches have beeninitialized due to discovery of anerror in the memory switchsettings.Set the memory switches again using theSystem Menu and the System settingsunder PT Configuration at the NTSupport Tool.
(Section 6 System MenuOperation)If the problem recurs, contact yourOMRON service center.177SectionResponding to Displayed Error MessagesMessageCause7-2Remedy[Backup Data Error]Memory table and History data wasinitialized by backup failure.It can be caused by lowered voltage ofthe battery.Initialization has been executedbecause of an error in thebackup data area.Check the battery voltage by checkingthe color of the RUN Indicator and withthe battery check in the System Menu; ifthe voltage is low, replace the batterywith a new one. (Checking the BatteryVoltage, page 160, and 7-3-1 Installing orReplacing the Battery, page 184) Thenre-transmit the memory table data fromthe NT Support Tool.If the voltage is normal and the problemrecurs, contact your OMRON servicecenter.[With memory switch setting screen]Invalid Comm.
MethodProtocol settings for serial port Aand serial port B aremismatched.Refer to Possible Combinations ofCommunication Method Settings on page126 and set the protocol of serial port Aand serial port B so that their settings arematched.* Set serial port A to None whenconnecting the NT Support Tool and thehost at the same time.178SectionResponding to Displayed Error Messages7-27-2-2 Errors Occurring during Operation and Their RemediesThe table below shows the errors that can occur during operation of the NT21and their remedies.MessageCauseRemedy[Address Setting Error]Addressing Error exists in theScreen.Correct address setting by theNT Support Tool.The host side allocated wordsand bits set with the NT SupportTool are incorrect.Set correct words and bits after checking thearea used at the host side by referring to PCMemory Map in Appendix D of the ReferenceManual or the operation manual for the PCbeing used.[Memory Table No.
![](https://s.studizba.com/z.php?f=/templates/si/i/noavatar.png&w=100&h=100&t=1"){kind=avatar}
