NT21_Setup Manual (V068-E1-1) (986757), страница 28
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If the clock data is incorrect, spaces will be storedinstead of the data.S With the NT21, the record data can also be displayed by calling screen No.9001 (sort by occurrence) or screen No. 9002 (sort by frequency) during theRUN mode.S For details on the display history record function, refer to 2-15-1 Display History Record Function in the Reference Manual.150Section 6-11System MaintenanceS The order of display for sort by occurrence display (from oldest record or fromnewest record) is set with the Hist.
Disp. Method memory switch (page 139).Display the display history record data by following the menu operations fromthe System Menu as shown below.Select Maintenance Mode.Select Display History.Select Sort by Occurrence or Sort by Frequency.If necessary, select the next or previousscreen by pressing [↓] (next screen) or [↑](previous screen).The example screen to the left shows adisplay for the sort by occurrence method(from oldest record).Press Quit to return to the DISPLAY HISTORY MENU screen.6-11-4 Displaying the Alarm History RecordThe alarm history record function is a function that continually monitors duringoperation, the status of bits at the host designated in advance with bits in the bitmemory table, and records the time when these bits come ON, and the numberof times they come ON.The record data can be displayed using an operation from the System Menu.This section explains how to display the alarm history record data recorded inthe NT21.Note that there are two display methods: sort by occurrence (ON time order) andsort by frequency (order of number of times the bits have come ON).151System MaintenanceReference:Section 6-11S Install an optional battery in the NT21 when using the alarm history recordfunction.S When a battery is not installed or the battery fails, the contents of the historyrecord will be unpredictable when the NT21 is turned OFF and will be initialized.S Time stamps will be recorded with the history records using the clock data readby the NT21 from the host.
If the clock data is incorrect, spaces will be storedinstead of the clock data.S With the NT21, the record data can also be displayed by registering an alarmhistory display element on the screen.S For details on the alarm history record function, refer to 2-15-2 Alarm HistoryRecord Function in the Reference Manual.S The order of display for sort by occurrence display (from oldest record or fromnewest record) is set with the Hist. Disp. Method memory switch (page 139).152Section 6-11System MaintenanceDisplay the alarm history record data by following the menu operations from theSystem Menu as shown below.Select Maintenance Mode.Select Alarm History.Select Sort by Occurrence or Sort by Frequency.If necessary, select the next or previousscreen by pressing [↓] (next screen) or [↑](previous screen).The example screen to the left shows a display for the sort by occurrence method (fromoldest record).Press Quit to return to the ALARM HISTORY MENU screen.6-11-5 Checking Screen DataThe NT21 allows the registered screens (Nos.
1 to 3999) to be displayed andchecked by operation from the System Menu.Reference:S Window screens cannot be displayed by operation from the System Menu.S Only the user screens (Nos. 1 to 3999) can be displayed. Screens for systemuse cannot be displayed.153Section 6-11System MaintenanceSpecifying the Display MethodSpecify the display method for the screens as indicated in the table below.Setting ItemDisplay of Lamp/Touch SW No.SettingOptionsFunctionAllows designation of whether the bit number of the lamp bit set for a lamp or touchswitch is displayed or not.The display format is as follows Ljfffffff (j: area type, fffffff: bitnumber).ON, OFF*Display of Memory Allows designation of whether the table entry numbers in numeral and character string ON, OFF*Table Entry Num- memory tables are displayed or not.berThe display format for the numeral memory table is Nffff and the display formatfor the character string memory table is Sffff.This function is valid for the following display elements.- Numeral displays- Character string displays- Bar graphs- Numeral setting input fields (including thumbwheel type)- Character string input fieldsDisplay of image/Library No.Allows designation of whether image/library code numbers are displayed or not.ON, OFF*Display of BrokenLine FrameAllows designation of whether or not broken line frames are displayed around the display elements for showing the positions registered.ON, OFF** Default (factory) settingReference: Each setting of the screen data check is effective only on this menu.
Exiting fromthis screen data check menu resets the settings to the default (all the settings areset to OFF).Operations on the SCREEN DATA CHECK ScreenThe function shown below can be set on the SCREEN DATA CHECK screen.Use this function as required when displaying complex screens on which multiple display elements have been registered overlapping each other.a) Equivalent to 2 touch switches (18 mm)c)b) Equivalent to 2 touch switches (18 mm)a) Display the previous display element on the upper most portion of thescreen in the order in which the display elements were registered (excluding fixed display elements).b) Display the next display element on the upper most portion of the screenin the order in which the display elements were registered (excludingfixed display elements).c) Return to the screen on which screens are specified.154Section 6-11System MaintenanceDisplaying the SCREENDATA CHECK ScreenDisplay the SCREEN DATA CHECK screen by following the menu operationfrom the System Menu shown below.Select Maintenance Mode.Select Screen Data Disp.Use the numerical input switches to input thenumber of the screen to be displayed.Each digit can be incremented or decremented by pressing the corresponding + and –keys.Press Set.Press the touch switches to specify the display method in each case.The setting option changes each time a touchswitch is pressed.155Section 6-11System MaintenancePress Quit to return to the screen numberselection screen.Press Disp.BOILER OPERATIONT 015003RUNL 020000Start ConfirmationT 015301STOPL 020005Stop ConfirmationT 016312ERRORL 020013Error OccurrenceBOILER OPERATIONT 015003RUNL 020000Start ConfirmationT 015301STOPL 020005Stop ConfirmationT 016312ERRORTouching the top or bottom of the screenchanges the way the display elements overlap each other in the order in which they areregistered.In this example, the bottom portion of thetouch switch, which is under the lamp, will bedisplayed over the lamp.When you have finished checking the screen,press the center area of the screen to returnto the SCREEN DATA CHECK screen.L 020013Error OccurrenceIf you wish to continue by checking another screen, repeat the operation, starting by specifying the screen number.To end the operation, press Quit on the screen number selection screen.
TheNT21 returns to the MAINTENANCE MODE MENU screen.6-11-6 Device CheckThe NT21 provides checks on the functions of the following items.156• BuzzerPage 157• LEDPage 158• LCDPage 158• BacklightPage 158• Screen data memoryPage 159• Touch switchesPage 160• Battery voltagePage 160Section 6-11System MaintenanceDisplay the Device Check Menu screen by following the menu operations fromthe System Menu as shown below.Select Maintenance Mode.Select I/O Check.Select Device Check.Checking the BuzzerCheck if the buzzer sounds correctly.Reference: The buzzer will sound in this check regardless of the setting made with the Buzzer Sound memory switch.Select Buzzer Check.Check the buzzer by following the menu operations from the Device CheckMenu as shown below.• If the buzzer functions correctly, it will sound continuously.
At this time, theBuzzer Check touch switch will be displayed in reverse video.• To stop the buzzer while it is sounding, press the Buzzer Check touch switchagain.157Section 6-11System MaintenanceChecking the RUNIndicatorCheck if the RUN Indicator lights normally.Check the RUN Indicator by following the menu operations from the DeviceCheck Menu as shown below.Select LED Check.• If the RUN Indicator is functioning normally, it will operate as follows. At thistime the LED Check touch switch will be displayed in reverse video.Lit in green OFF lit in red OFF lit in green...• To end the LED check, press the LED Check touch switch on the DEVICECHECK MENU screen again.Checking the LCD(Screen Display)Check if the LCD (screen display) lights normally by following the menu operations from the System Menu as shown below.Select LCD Check.• The check screen displays all the dots on the screen: either press anywhere onthe touch panel or wait for three seconds and all the dots will be cleared.On completion of the display and clearance of all dots, the NT21 returns tothe DEVICE CHECK MENU screen.• To abort the LCD check, press the top right corner of the touch panel.
TheNT21 will return to the DEVICE CHECK MENU screen.Checking the BacklightCheck if the backlight lights normally by following the menu operations from theDevice Check Menu as shown below.Select Backlight Check.• If the backlight is normal, it flashes. At this time, the Backlight Check touchswitch is displayed in reverse video.• To end the backlight check, press the Backlight Check touch switch again.158Section 6-11System MaintenanceScreen Data MemoryCheckReference:Check if the screen data memory is functioning normally.S In the screen data memory check, a write test is performed on the screen datamemory.
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