NT21_Reference Manual (V069-E1-1) (986756), страница 82
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Register image/library lamps set for bits 1 to 15 in the same way as in (2).Reference: With PT, once an element has been drawn, it is not redrawn unless the displaycontents change (this applies even with overlapping screens). Consequently, if arail is drawn as a fixed display element underneath the automatic guided vehicle,when the automatic guided vehicle moves, the rail underneath the positionwhere the automatic guided vehicle was originally placed, cleared together asthe vehicle moves.
Bear this in mind when creating the screen data.The rail is cleared.Displaying Online Help with a Touch SwitchExample:Displaying help information in a window when a touch switch is pressed.PTHELPWindow opensHowto use... CloseHELPWindow closes1, 2, 3...4101. Create a new screen as a keyboard screen.2.
Register help information as text and graphics for the screen created in (1).3. Make settings like those indicated below to register a touch switch for thescreen created in (1).• Function:Input key – keyboard• Keyboard screen No.: Number of keyboard screen currently beingcreated• Action type:Close• Guide character display:Check mark set, fixed character string, guidecharacters Close4.
Specify the area to be displayed as a window, making sure that it will accommodate the help information and the touch switch created in (3).5. Register a touch switch on the screen on which the help information is to bedisplayed (base screen), making the following settings for it.SectionExamples of Actual Applications of Direct Access5-1• Function:• Keyboard screen No.:Input key – keyboardNumbers of keyboard screens created in (1) to(4)• Action type:Open• Guide character display:Check mark set, fixed character string, guidecharacters HELPBy setting the action type of the touch switch on the base screen as Toggle, thewindow can be opened and closed from the base screen.Continually Monitoring a Specific PC Bit and Displaying a Message on a WindowWhen It Comes ONOpening a window and displaying an error message on it when the monitored bitat the PC comes ON.Example:PTPCBitTEMPERATUREABNORMALMOVEONCLOSEWindow1, 2, 3...1.
Set TEMPERATURE ABNORMAL as the initial value for any characterstring memory table entry.2. Make the following settings for any bit memory table entry.• PC Address:PC bit number to be monitored• Function:Alarm• String table entry:Number of the character string memory tableentry for which settings were made in (1).3. Register an alarm list, set as indicated below, for window screen.• List Settings: Set the Start Bit Table Entry and No.
of BitsReferenced so as to include the bit memory table entryset in (2) above.4. Register Window Move touch switch and Window Close touch switch on awindow same as (3).411SectionExamples of Actual Applications of Direct Access5-15. Create the following ladder program so that the window is opened from thehost when the bit comes ON. (Word addresses are not shown in the ladderprogram below, set the value when programming.)error bit@MOV(21)Window screen No.Word of theScreen No. inwindow controlarea@MOV(21)Value for X coordinateWord of Xcoordinate inWindow control area@MOV(21)Value for Y coordinateWord of Ycoordinatein windowcontrol area@MOV(21)error bit#0000Word ofScreen No.
inwindow control areaWith this ladder program, the specified window is displayed at the designated position when the error bit comes ON, and the window is closed whenthe error bit goes OFF.Suggestions• Window can be moved closed or opened by the operation of touch switch,when the window move touch switch is registered on the window like the example above.• Detailed screen is displayed, or the screen is switched by pressing on the message position in an alarm list on the window. (Refer to page 406)• Multiple windows can be displayed at the same time (up to three windows).(Refer to page 238)• It is possible to display windows so that they do not overlap when multiple windows are displayed, since the position of each window can be specified.
(Referto page 310)• When the windows are overlapped, the displaying order of windows can bechanged by touching the window that is displayed under the other window.(Refer to page 241)Continuously Reading Out the Contents of a PC Word and Displaying a Trend Graphby BacktrackingExample:412Utilizing the trend graph logging function and background functionRegister a trend graph set as indicated below for the screen.• Line Properties:Word address of the PC word to be monitored• Data Logging:Check mark set• Background:Check mark setSectionExamples of Actual Applications of Direct Access5-1• Touch switches for logging:Check marks set for all• Touch switches for display function:Check marks set for allRegardless of whether or not the trend graph is displayed, reading of thecontents of the word starts at the same time as PT operation is started.STARTOPERATIONDue to the background function, data reading is started atthe same time as operation is started.↓When the trend graph screen is displayed, the latest status is displayed.The latest trend graph is displayed on the basis of collecteddata.↓Even if another screen is displayed during data collection, the contents ofthe word continue being read by the background function.Other screenData collected whilethe other screen wasdisplayed.↓If required, past status changes can be displayed as a trend graph.OldPart being displayedPrevious Page(Rewind) touchswitchNewNext Page(Forward)touch switchSuggestions• Apart from the Previous Page (Rewind) and Next Page (Forward) touchswitches indicated above, the following touch switches can be created withoutrestriction to control the display and data recording (2-10-4 Trend Graphs,page 170).413SectionExamples of Actual Applications of Direct Access5-1• Stop touch switchStops data sampling.• Restart (Continue) touch switchRestarts data sampling when it has been stopped.• Display Clear (Clear display) touch switchClears the currently displayed trend graph, then starts drawing the graphfrom the new status (past records are retained).• Log Clear (Clear log) touch switchClears past records.Displaying the Day of the Week Using Clock Data in the PTAt the PT, numeric values are stored in numeral memory table entry 253 asshown below.Value (decimal)0123456Day of weekSunMonTueWedThuFriSatBy indirect reference of character string displays, the displayed characters arechanged using these values to change, the character string memory table entrywhose contents are to be displayed.Example:Displaying Sun to Sat, stored in character string memory table entries 0 to 6, byindirect reference of numeral memory table entry 253.Fixed display textDisplay of numeric value innumeral memory table entry 2513 / 12 (Thu)Display of numeric value innumeral memory table entry 2501, 2, 3...The display here isexplained in this example.1.
Set the initial values indicated below for character string memory table entries 0 to 6. Do not allocate words for these character string memory tableentries in the host.Character string memorytable entry0123456Initial valueSunMonTueWedThuFriSat2. Register the part that displays the month and day for the screen, followingthe example given above.3.
Register the part that displays the day of the week by indirect specification ofa character string display, as indicated below.• Indirect Reference:Check mark set• Table Entry:253 (numeral memory table entry that stores the day of the week data)The settings above will display the month and day set with the calendar andclock in the System Menu.Suggestions• With the NT31/NT31C or NT631/NT631C, the clock data can be set on theCALENDAR & CLOCK SET screen in the System Menu. Refer to section 6 ofthe Setup Manual for details.• With the NT21, the clock data is read from the Clock Data Area in the host.• With the NT31/NT31C or NT631/NT631C, use the memory table entry copyfunction to set the year, month, date, and day of the week in numeral memorytable entries 254 and 255 (pages 322, 326, and 355).414SectionExamples of Actual Applications of Direct Access5-1• With the NT21, the clock data is automatically read from the host.
Numeralmemory table entries 254 and 255 are not used (reserved for the system).• If character string memory table entries 0 to 6 are used for other applications atthe same time as they are used to display the day of the week.1, 2, 3...1. Copy the contents of numeral memory table entry 253 to a table entry thatcan be allocated a PC word by using the memory table copy function.2.
To achieve correspondence between the numbers of the character stringmemory table entries that store Sun to Sat and the contents of numeralmemory table entry 253 (0 to 6), add a constant.3. Display the day of the week indirectly by following the example above.Example:Storing Sun to Sat in character string memory table entries 200 to 206.Character string memory tableentry200201202203204205206Initial valueSunMonTueWedThuFriSatAdding 200 to the contents of numeral memory table entry 253 enables indirectspecification of the character string memory table entries that store Sun to Sat.Enabling and Disabling a Touch Switch with an Interlock BitExample:While the system is setting up or initializing, the guide characters Please wait aredisplayed on the touch switch and the touch switch’s operation is disabled.When the system is ready, the guide characters Ready are displayed on thetouch switch and the touch switch’s operation is enabled.PTPlease waitPCInput disabledwhen OFFInterlock bitReadyInput enabledwhen ONRegister a touch switch with settings like those indicated below in the screen.• PC address of lamp bit: Bit address of the bit in the PC that indicates operating status of the equipment.
(OFF during setup or initialization and ON when ready.)• Guide character display:Check mark set, ON/OFF switching characterstrings, guide characters Please wait when lampis not lit, guide characters Ready when lamp is lit• Interlock:Check mark set• PC address of interlock bit:Bit address of the bit in the PC that indicates operating status of the equipment. (OFF during setup or initialization and ON when ready.)With the settings above, the touch switch display will change according to theoperating status of the equipment and the touch switch’s operation will be enabled/disabled as well.415SectionExamples of Actual Applications of Direct Access5-1Suggestions• The interlock function allows individual inputs (numeral or character string input), recipe data editing, and touch switches to be enabled/disabled from thePC. (See Disabling Touch Switches with Interlock Bits on page 369 for details.)• Bits in the PT status control area can be turned OFF/ON to control the followingPT operations as groups.• Enable/disable the opening of windows (bit 6)• Enable/disable numeral and character string inputs (bit 5)• Enable/disable screen switching (bit 4)Scaling the Contents of a PC Word and Displaying the ResultThe contents (X) of a PC word are scaled with the equation Y=2X+3 and the results are displayed in a trend graph.Example:PTPCChanges in thecontent of DM 0000at regular intervalsThe calculation Y=2X+3 is executedcontinuously in the PT and the resultsare displayed in the trend graph.1, 2, 3...4161.
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