NT21_Reference Manual (V069-E1-1) (986756), страница 6
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Operations with up to 5 terms are possible.15SectionFunctions of the NT21, NT31/NT31C and NT631/NT631C1-21-2-6 DisplaysThe NT21, NT31/NT31C, and NT631/NT631C can display various kinds of elements such as characters, numeric values, graphs, lamps, and touch switches,on a screen. The screen data displayed by the NT21, NT31/NT31C, andNT631/NT631C are created by using the Support Tool at a personal computer.Example NT31/NT31C DisplayCharacters(fixed display)Line 1 StatusStopCharacters(character string display)Machine name: NT31C-ST141Production qty.: 137 unitsBargraph25%0%Stage 1Fixed DisplaysCheck 150%Stage 2TouchswitchesRestart100%Numeric values(numeral display)Check 2LampsCharacters and various graphics (circles, circular arcs, sectors, polylines, polygons and rectangles) whose display does not have to be changed, and markdata, image data, and library data that has already been registered, can be written directly onto the screen.CircleArcSectorPolylinePolygonRectangle* A continuous straight line withup to 256 points can be drawn.* A polygon with up to 255vertices can be drawn.Marks are graphics comprising 16 by 16 dots that can be used as characters.They can be used as custom characters within character strings.Image data contain graphics comprising any required area of dots.
They are registered in advance and as many as required can be displayed at any position onthe screen.Windows bit map (BMP) data can be used for images.There is a two-color mode, in which the display color and background color of theimage are specified when it is registered in a screen, and an eight-color mode inwhich colors are assigned to the image in advance.Since image data is composed of dots, it requires a large data size but offersgreat powers of expression.16SectionFunctions of the NT21, NT31/NT31C and NT631/NT631C1-2Library data contain combinations of fixed display graphics registered as asingle graphic. They are registered in advance and as many as required can bedisplayed at any position on the screen.Since it is generated by combining graphics, library data has a small data size.MarkLampsImage dataLibrary dataThese are graphics whose display status changes in accordance with the statesof bits at the host. Squares, circles, sectors and polygons can be used for lamps(normal (standard) lamps).
In accordance with the status of the host bit, they canbe lit (displayed in reverse video) or flashed (repeated alternation between normal and reverse video display states).Lamps can also display different image/library data for the ON and OFF states ofthe host bit (such lamps are called image/library lamps).There are four standard lamp guide characters: fixed display character strings,ON/OFF switching character strings, numeral displays, and character string displays.
When fixed display character strings or ON/OFF switching characterstrings are used, several lines of guide characters can be displayed.Normal (Standard) LampsONONHostUnlit stateLit stateImage/Library LampsONUnlit stateHostLit stateTouch SwitchesThese switches can be set at any location on the screen. Pressing a touch switchon the screen where a touch switch has been set can have the following effects:• Notification to a host bit (input notification function)• Changing the displayed screen (screen switching function)• Input of a numeric value or character string (input key function)• Copying of a numeric value or character string (copy key function)• Shifting to another numeric value or character string input field (cursor movingkey function)• Obtaining a hard copy of the screen (screen print function)• Opening / Closing a window• Moving a window17SectionFunctions of the NT21, NT31/NT31C and NT631/NT631C1-2Touch switches can be made to light or flash in accordance with the status of ahost bit in the same way as lamps.The following 8 types of display graphic can be used for touch switches: Standard, shadow, 3-dimension, no display frame, rectangle, circle, polygon, sectorWhen rectangle, circle, polygon, or sector is selected as the shape, the areawithin which pressing of the touch switch is sensed (the touch switch area) canbe set independently of the position where the display graphic is set.Touchswitch areaWhen thisposition ispressed...ShowninreversevideoDisplayframeFunction executedThere are four standard touch-switch guide characters: fixed display characterstrings, ON/OFF switching character strings, numeral displays, and characterstring displays.
When fixed display character strings or ON/OFF switching character strings are used, several lines of guide characters can be displayed.Numeral DisplaysNumeric values stored in the numeral memory table entries are displayed. Thedisplayed numerals can be changed by changing the data stored in the numeralmemory table entries.Hexadecimal values can also be displayed.When decimal values are displayed, the number of digits for the integral part andfractional part of displayed values can be specified in advance.String DisplaysCharacter strings stored in the character string memory table entries are displayed.
The displayed character strings can be changed by changing the datastored in the character string memory table entries.Numeral InputsNumeric values can be input at the PT by using touch switches. The input numeric values can also be stored in a numeral memory table and notified to thehost.Numeral inputs can be enabled and disabled from the host when an interlock bithas been allocated.12345678Input7894561230.
"Window18SectionFunctions of the NT21, NT31/NT31C and NT631/NT631C1-2String InputsCharacter strings can be input at the PT by using touch switches, bar code readers, etc. The input character strings can also be stored in a character stringmemory table entry and notified to the host.String inputs can be enabled and disabled from the host when an interlock bithas been allocated.Character string setting input fieldDisplayNT31InputNT21NT31NT631Thumbwheel SwitchesNumeric values can be input by incrementing or decrementing each digit withthe corresponding touch switch (+, –). The input numeric values can also bestored in a numeral memory table entry and notified to the host.Thumbwheel switch inputs can be enabled and disabled from the host when aninterlock bit has been allocated.GraphsThese are graphics whose display changes in accordance with the numeric values stored in numeral memory table entries. There are the following four types.Bar GraphsBar graphs display the present value in a numeral memory table entry convertedto a percentage within the range –100% to +100% of a preset value.60%Analog MetersAnalogue meters display, using a quarter, half, or full circle shape, the presentvalue in a numeral memory table entry converted to a percentage within therange –100% to +100% of the preset value.
Users can choose from movingpointer type and filling area type displays. Users can also add graduation to thegraph.60%Broken Line GraphsBroken line graphs display, in an easy-to-read form, a sequence of numeral19SectionFunctions of the NT21, NT31/NT31C and NT631/NT631C1-2memory table values converted to a percentage within the range –100% to+100% of a preset value.100%0%Example showing a series of 11numeral memory table values(with a check mark set for thedisplay sign)–100%Trend GraphsTrend graphs display chronological changes in the value in a numeral memorytable entry, converting the value to a percentage within the range –100% to+100% of a preset value.
The trend graph shifts position with the passage oftime.Past data can also be recorded, and the numeral memory table entry can beread (sampled) even while the trend graph is not being displayed.The user can choose to stop sampling, restart sampling, or display past data, bypressing touch switches.Alarm List/HistoryThe alarm list/history function displays messages in list form, or graphics(image/library data), in accordance with changes in bit memory table statuses.For the alarm list, a series of bit memory table entries are monitored, and messages (contained in the character string memory table) set for bit memory tableentries that come ON are displayed.For the alarm history, bit memory table entries for which the history property isset are continually monitored, and the time when they come ON and number oftimes they come ON are recorded and displayed together with the message(character string) set for the bit memory table entry.The NT21, NT31/NT31C, and NT631/NT631C allow selection of the display order for the newest record first or oldest record first by memory switch setting.The alarm list function is used to determine which bits are ON at the presenttime.
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