NT21_Reference Manual (V069-E1-1) (986756), страница 92
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Theenhanced functions can be applied to screen data converted from the NT20S.Functional Changes when Using NT20S Compatible ModeThis section describes the changes in PT functions resulting from the NT20S compatible mode.Reference:S Except for the differences described below, the NT21 retains all of its newfunctions.S The NT20S compatible mode is used by default when screen data from an earlier PT is converted for use in an NT21. If you do not want to use NT20S compatible mode, remove the check mark in the Support Tool’s menu [PT Configuration]–[PT Type]–[NT20/30/620 Compatible Mode].457Appendix CNT20S and NT30/620 Compatible ModesItemPT statuscontrolareaNT20S compatible mode usedNT20S compatible mode not usedWord configurationWord configurationBitBit15Word1413121110Word n9876543210Screen number (4 BCD digits)Word n+1Word n+2Copy destination memory table entry No.
(3 BCD digits)Copy typeWord n+3141312Word nCopy source memory table entry No. (3 BCD digits)015WordPT status control bitsWord n is used to specify the screen switch setting only.11109876543210Screen number (4 BCD or hexadecimal digits)Word n+1Copy source memory table entry No. (4 BCD or hexadecimal digits)Word n+2Copy destination memory table entry No. (4 BCD or hexadecimal digits)Word n+3PT status control bitsWord n+4Reserved for system useWord n is used to specify the screen switch setting and notify screennumber.PT status control bitsPT status control bits0 (OFF)WordScreen displayPerformedNot performed15Word15Controlled Item1 (ON)Controlled Item1 (ON)0 (OFF)Screen displayPerformedNot performed14Processing priority registrationRegisteredCanceled14Processing priority registrationRegisteredCanceled13Continuous buzzerSoundedStopped13Continuous buzzerSoundedStopped12Intermittent buzzer (short)SoundedStopped12Intermittent buzzer (short)SoundedStopped11Display history initializationPerformedNot performed11Display history initializationPerformed10Not used10Not used9Intermittent buzzer (long)SoundedStopped9Intermittent buzzer (long)Sounded8Backlight modeLitFlashing8Backlight modeLit7Not used7Not used6PT window openingDisabledEnabled6PT window openingDisabledEnabled5Numeral/character string inputDisabledEnabled5Numeral/character string inputDisabledEnabled4PT screen switchingDisabledEnabled4PT screen switchingDisabledEnabled3Not used*2Always 03Memory table copy execution PerformedNot performed2Not used*2Always 02Memory table copy typeNumeralCharacter string1Alarm history initialization1Alarm history initializationPerformed0Not used0Not usedAlways 0Always 0PerformedNot performedAlways 0*1: Both the display history and alarm history are initialized when bit11 is turned ON.Not performedAlways 0StoppedFlashingAlways 0Not performedAlways 0Reflected in bit unit*2: Bits 2 and 3 are not used in NT20S compatible mode.PT statusnotify areaWord configurationWord configurationBitWordWord mWord m+1Word m+2151413121110987Bit6543210Screen number (4 BCD digits)Numeral/character string memory table entry No.
(4 BCD digits)PT status notify bits0WordWord m00Word m is used for screen number notification.(The function of the PT status notify bits does not change.)Word m+11514131211109876543210Numeral/character string memory table entry No.(BCD or hexadecimal 4 digits)PT status notify bits000Screen number notification occurs in word n of the PT status controlarea.(The function of the PT status notify bits does not change.)ImagecodesFE20 to FEFF hexadecimal, 224 codes max.0001 to 0FFF hexadecimal, 4,095 codes max.LibrarycodesFA20 to FAFF, FB20 to FBFF, FC20 to FCFF, and FD20 to FDFFhexadecimal, 896 codes max.1000 to 3FFF hexadecimal, 12,288 codes max.Insertion ofcodes instringsImage and library codes can be inserted in character strings.Image and library codes cannot be inserted in character strings.458NT20S and NT30/620 Compatible ModesReference:Appendix CS When a PT is in NT20S compatible mode, the method used to copy memorytable entries is the same as the method in earlier PTs.
Since the configurationof the PT status control area is also the same, only 3-digit memory table entrynumbers can be specified for copying. (Bits 12 to 15 are used for other purposes.)The copy operation is executed immediately when a memory table entry number is written to the PT status control area, so it is safest to write the destinationmemory table entry number before writing the source memory table entrynumber to avoid accidentally writing to the wrong destination.S The composition and function of the PT status control bits have not beenchanged to match those of the earlier PTs because they are needed in order touse the new functions in the NT21.S Only the functions listed in the table above are changed in NT20S compatiblemode.
Other parts of the screen data and user program may need to bechanged to be compatible with the earlier PTs. Refer to the following section(Differences between Earlier PTs and PTs in NT20S compatible Mode) for details.Differences between Earlier PTs and PTs in NT20S CompatibleModePTs using the NT20S compatible mode are highly compatible with the NT20S, but some editing is required due todifferences such as changes in hardware.The remaining differences are listed below.
The following differences are related to reuse of screen data and theuser program only. The added capabilities of the NT21 are not listed.For details on added capabilities, refer to Differences between the NT20S and the NT21 on page 442.• Foreground/background relationships in screen drawing• Continuous screens (Screen switching must be performed with touch switches.)• System keypad (Must be registered using symbol manager in the Support Tool.)• Control codes in character strings (Control codes 00 and 0A must be edited out.)• Guide characters (labels) protruding from touch switches (The position and color of guide characters must beedited.)• Overlapping of fixed displays and touch switches/lamps (Colors must be edited.)Be sure to edit the screen data and user program to correct the problems listed above when reusing screen dataand user programs from earlier PTs.Reference: Appendix A of the Support Tool’s operation manual describes the editing thatmay be required when converting data.
The following items may need to beedited. Refer to the Support Tool’s operation manual as necessary.S Editing Related to Continuous ScreensS Editing Related to the System KeypadS Editing Related to Guide Characters of Lamps (Lit Color)S Editing Related to the Touch Switches to Control Trend Graphs459NT20S and NT30/620 Compatible ModesAppendix CNT30/620 Compatible Mode (for the NT31/NT31C andNT631/NT631C)The NT30/620 compatible mode is a function that allows screen data and user programs from an earlier PT (NT30,NT30C, NT620S, NT620C, or NT625C) to be easily reused in an NT31, NT31C, NT631, or NT631C.
UsingNT30/620 compatible mode reduces the differences between the earlier and most recent versions and makes iteasy to achieve compatibility.The NT30/620 compatible mode has the following features:• Changes the word configuration of the PT’s PT status control area and PT status notify area to the match theword configuration of the earlier PTs.
This change allows the new PTs to execute user programs from the earlierPTs without any editing.• The image and library codes are changed to match those of earlier PTs, so it isn’t necessary to edit any of thesecodes that are specified in the user program. Furthermore, display elements that have image and library codesincorporated into character strings can be used without any editing.• When using the Support Tool to convert screen data from an earlier PT for use in a -V2 version of an NT31,NT31C, NT631, or NT631C, the default setting is NT30/620 compatible mode (the setting can be changed in theSupport Tool’s PT environment settings). The default setting converts screen data with the highest level of compatibility.• Even though a newer NT31, NT31C, NT631, or NT631C is operating in NT30/620 compatible mode, it still retains all of its new functions. The enhanced functions can be applied to screen data converted from an earlier PT.Functional Changes when Using NT30/620 Compatible ModeThis section describes the changes in PT functions resulting from the NT30/620 compatible mode.Reference:S Except for the differences described below, the -V2 versions of the NT31,NT31C, NT631, and NT631C retain all of their new functions.S The NT30/620 compatible mode is used by default when screen data from anearlier PT is converted for use in a -V2 version of an NT31, NT31C, NT631, orNT631C.
If you do not want to use NT30/620 compatible mode, remove thecheck mark in the Support Tool’s menu [PT Configuration]–[PTType]–[NT20/30/620 Compatible Mode].460Appendix CNT20S and NT30/620 Compatible ModesItemPT statuscontrolareaNT30/620 compatible mode usedNT30/620 compatible mode not usedWord configurationWord configurationBitBit15Word1413121110Word n9876543210Screen number (4 BCD digits)Word n+1Word n+2Copy destination memory table entry No. (3 BCD digits)Copy typeWord n+3141312Word nCopy source memory table entry No. (3 BCD digits)015WordPT status control bitsWord n is used to specify the screen switch setting only.11109876543210Screen number (4 BCD or hexadecimal digits)Word n+1Copy source memory table entry No. (4 BCD or hexadecimal digits)Word n+2Copy destination memory table entry No. (4 BCD or hexadecimal digits)Word n+3PT status control bitsWord n+4Reserved for system useWord n is used to specify the screen switch setting and notify screennumberPT status control bitsPT status control bits0 (OFF)WordScreen displayPerformedNot performed15Word15Controlled Item1 (ON)Controlled Item1 (ON)0 (OFF)Screen displayPerformedNot performed14Processing priority registrationRegisteredCanceled14Processing priority registrationRegisteredCanceled13Continuous buzzerSoundedStopped13Continuous buzzerSoundedStopped12Intermittent buzzer (short)SoundedStopped12Intermittent buzzer (short)SoundedStopped11Display history initializationPerformedNot performed11Display history initializationPerformed10Not used10Not used9Intermittent buzzer (long)SoundedStopped9Intermittent buzzer (long)SoundedStopped8Backlight modeLitFlashing8Backlight modeLitFlashing7Screen printingPerformedNot performed7Screen printingPerformedNot performed6PT window openingDisabledEnabled6PT window openingDisabledEnabled5Numeral/character string inputDisabledEnabled5Numeral/character string inputDisabledEnabled4PT screen switchingDisabledEnabled4PT screen switchingDisabledEnabled3Not used*2Always 03Memory table copy execution PerformedNot performed2Not used*2Always 02Memory table copy typeNumeralCharacter string1Alarm history initialization1Alarm history initializationPerformed0Not used0Not usedAlways 0PerformedNot performedAlways 0*1: Both the display history and alarm history are initialized when bit11 is turned ON.Not performedAlways 0Not performedAlways 0Reflected in bit unit*2: Bits 2 and 3 are not used in NT30/620 compatible mode.PT statusnotify areaWord configurationWord configurationBitWordWord mWord m+1Word m+2151413121110987Bit6543210Screen number (4 BCD digits)Numeral/character string memory table entry No.
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