NT21_Reference Manual (V069-E1-1) (986756), страница 12
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8Screen No. 7This areoverlappingscreens.overlappingScreen No. 25screens.Child Screen Registration and Display ResultChild screens are created as normal (standard) screens. Therefore they canalso be displayed independently by designating their screen numbers.Parent screens are special screens used for the purpose of displaying overlapping screens. They are created by designating a new screen as a parent screenat the Support Tool. Register only the screen numbers of the child screens to beoverlapped for this new screen.
Direct registration of elements on a parentscreen is not possible.To display overlapping screens on the PT, designate the screen number of theparent screen. The child screens will be displayed in the order they were registered (i.e., the first one registered will be the bottom-most screen) to build up thecompound image.Note that the order in which the child screens are registered may affect the waythat overlapped screens are displayed.Child screen 1Registration order:Child screen 1 → Child screen 2Child screen 2Registration order:Child screen 2 → Child screen 1Restrictions on Overlapping ScreensNote the following points, when creating overlapping screens.• Numeral input and character string input input fields, which allow the input ofnumeric values and character strings, can each only be set on one of the child42SectionPT Screens2-1screens.
(Thumbwheel switches can be used but temporary input fields cannot.) For details on numeral input, refer to 2-12 Inputting Numeric Values (page192), and for details on character string input, refer to 2-13 Inputting CharacterStrings (page 210).• Arrange the touch switches registered for each child screen, so that they do notoverlap on the parent screen. If touch switches are overlapped, the intendedoperation may not be performed when a touch switch is pressed.• On overlapping screens, the screen attributes of the child screens are invalidand the screen display is governed by the attributes of the parent screen.
Fordetails on screen attributes, refer to 2-1-4 Screen Attributes (page 45).Window ScreensApart from the normal (standard) screen display method, which a screen is displayed over the entire panel area, the PT also allows screens to be displayed inone part of the screen area only. This partial screen is called a window. and ascreen on which a window is displayed is called a window screen.Window screens can be registered under any screen numbers 1 to 3999. However, screens that are registered as window screens cannot be displayed independently like normal (standard) screens.Base screenKeypadKeypadTouch switch for openingthe window7 8 9"4 5 6 .1 2 3 0Window displayed on the screenat the registered size and positionWindow screen7 8 9 "4 5 6 .1 2 3 0Window areaWindows can be called anytime, regardless of which screen is currently displayed. It is possible to display multiple windows (max.: 3) on the same screen,and to open, close or move windows by the control from the host.With PT, up to three windows can be displayed at the same time.One of these windows is called a global window.
This window can be displayedall the time, regardless of which screen is currently displayed.Other two windows are called local windows. These windows can be displayedby linking to the currently displayed screens. When the screen is switched, thelocal window is closed automatically.For details, refer to 2-15 Window Function (page 237).43SectionPT ScreensSystem Screens2-1Screens with predetermined functions are called system screens.The types of system screens are indicated in the table below.ScreenNo.NameFunction0No-display screenIf screen number 0 is designated as the display screen, the screen of the PT is madeblank.9000System initializingscreenThis screen is displayed during the initial processing when the PT starts operation.During operation, screen number 9000 cannot be designated for display, but it is possible to create and register a screen under screen number 9000 at the Support Tool,and this screen can then be displayed instead of the default system initializationscreen.
Only fixed display elements can be registered for screen number 9000.9001Occurrence historyscreenThe PT features the display history record function, which records the display statusof screens. By designating screen number 9001 as the display screen, you cancheck the screens that have been displayed up to the present time in display order.You can set whether the records are presented in the order of newest first or oldestfirst by setting a PT memory switch.9002Frequency historyscreenThe PT features the display history record function, which records the display statusof screens. By designating screen number 9002 as the display screen, you cancheck the screens that have been displayed up to the present time in order of frequency of display.9020Programming Console functionscreenAs an expansion function, the PT features the Programming Console function, whichallows equivalent functions to those of a Programming Console.
When the PT is connected to a host that supports the Programming Console function, it can be used inthe place of a Programming Console by designating screen number 9020 as the display screen.9021 to9023Device Monitorfunction screens(NT31/NT31C andNT631/NT631Conly)The PT has been equipped with the Device Monitor function, which can perform thesame functions as a Data Access Console (DAC). When the PT is connected to ahost that supports the Device Monitor function, one of the following screens can bespecified to list the contents of host words, change word PVs, or display error loginformation.9021:Registration monitor screen9022:Continuous monitor screen9023:Error log screen9030Brightness andContrast Adjustment Screen(NT31/NT31C andNT631/NT631Conly)This screen can be used to adjust the contrast and the backlight brightness duringPT operation.9999Return to previousscreen designationIn addition to the display history function, the PT has a function that allows thescreen numbers of up to 32 screens to be recorded in their order of display.
Whenscreen number 9999 is designated as the display screen, the screen that was displayed immediately before the currently displayed screen is redisplayed. However,note that if a system screen is displayed in the middle of operation, the record of displayed screens is cleared. (The display history function’s data is not affected.)For details on the display history function, refer to 2-16-1 Display History RecordFunction (page 244).For details on the Programming Console function, refer to 6-12 ProgrammingConsole Function of the Setup Manual (V062-E1-j).For details on the Device Monitor function, refer to 2-17 Device Monitor Function(page 259).For details on screen switching refer to 3-3-1 Switching the Screen (page 300).44SectionPT Screens2-12-1-4 Screen AttributesThe PT allows attributes to be set for each screen, so that the function specifiedby the attribute is executed when the screen is displayed.
For example, when ascreen for which the buzzer attribute has been set is displayed, the buzzersounds.Set the screen attributes as properties of each screen using the Support Tool.The screen attributes that can be set are listed below. It is possible to set morethan one attribute for the same screen at one time.• Backlight (Light/Flash)• Buzzer (None/Continuous/Long/Short)• Background (NT31C and NT631C only)• Screen comment• History (record/don’t record)• History title• Load Local1 (Keyboard) (screen number)• Load Local2 (screen number)BacklightThe backlight attribute sets whether the backlight is lit or flashed when a screenis displayed.SettingFunctionLightThe backlight is lit. (Default)FlashThe backlight is flashed.Reference: The PT’s backlight can also be lit or made to flash using the PT status control bit(page 293).BuzzerThe buzzer attribute allows the buzzer to sound when a screen is displayed.There are the following four types of buzzer attribute setting.SettingNoneFunctionThe buzzer does not sound when the screen is displayed.
(Default)If the buzzer is sounding when the screen is displayed, it stops.The buzzer sounds continuously when the screen is displayed.Continuous If a buzzer type other than continuous is sounding when the screen isdisplayed, the sound changes to continuous.LongThe long intermittent buzzer sounds when the screen is displayed.If a buzzer type other than long intermittent is sounding when thescreen is displayed, the sound changes to long intermittent.The long intermittent buzzer sound is the repeated alternation of 1.0second on and 1.0 second off.ShortThe short intermittent buzzer sounds when the screen is displayed.If a buzzer type other than short intermittent is sounding when thescreen is displayed, the sound changes to short intermittent.The short intermittent buzzer sound is the repeated alternation of 0.5seconds on and 0.5 seconds off.45SectionPT Screens2-1The setting for the Buzzer Sound memory switch at the PT takes priority in determining whether or not the buzzer actually sounds.
When this memory switch isset to ON. the buzzer set with a screen attribute can sound.Reference:S The buzzer can also sound by PT status control bit operation (page 290).S The following methods can be used to stop the buzzer when it is sounding.• Switching to a screen whose buzzer attribute is None• Stopping the buzzer by PT status control bit operation (page 292)• Registering the buzzer stop touch switch on the screen (page 293)Background Color (NT31C and NT631C Only)With the NT31C and NT631C, the background color of the entire screen can beset for each screen.
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