NT21_Setup Manual (V068-E1-1) (986757), страница 3

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The screen data can be displayed on the NT21 in response to commands from the host or touch switch operation.HostThe screen data designated bycommands from the host or touchswitch operation is displayed.Receives Data from aHostThe NT21 can be connected to the host by a Host Link or NT link and receivenecessary data from the host.Host Link, NT linkSends Data to a HostHostData inputs (switch ON/OFF statuses, numeric values, character strings) thatwere input with devices such as touch switches can be transmitted to the host.HostTouch panelON/OFF information, numericdata, etc.3SectionComparison between NT20S and NT211-21-2Comparison between NT20S and NT21ItemNT20SNT21NT Support Tool usedNT-ZJCAT1-EV4 or NT-ZA3AT-EV2NT-ZJCAT1-EV4.6Effective display area112 x 56 mm (horizontal x vertical)117 x 63 mm (horizontal x vertical)Number of screen dots (resolution)256 x 128 dots (horizontal x vertical)260 x 140 dots (horizontal x vertical)Number of touch switches12 x 6 dots (horizontal x vertical)13 x 7 dots (horizontal x vertical)DIP switch settingsOn rear of UnitNone (software settings)Use of Memory UnitNot possiblePossible (to transfer system programdata and screen data)RS-232C interfaceConnector (9-pin) also used as port forscreen data transfer- Port A connector (also used forscreen data transfer, 9-pin)- Port B connector (for hostcommunications only, 9-pin)Backlight life10,000 h min.50,000 h min.Replacement backlightNT20S-CFL01Not replaceable.Battery backupNot possiblePossible*1(numeral/character string memorytables, history data, recipe data, andclock data)System program dataPre-installed (cannot be changed)The system installer and system program data are transferred from the NTSupport Tool.1:N NT LinksStandardStandard or high-speedMemory LinksNot possible*2PossibleNumber of user-registered screensMaximum of 500Maximum of 3999Screen data capacity*396 KB512 KBNumeral and character stringmemory tablesMaximum of 128 entriesMaximum of 2,000 entriesBit memory tableNoneMaximum of 1000 bitsMathematical tableNone256 entries max.Calculations can be executedautomatically in the PT.Image dataNoneMaximum of 4,095 (224 inNT20S-compatible mode)Library dataNoneMaximum of 12,288 (896 inNT20S-compatible mode)Fixed graphics (rectangles, polygons, arcs, sectors, tiling)None65,535 per screen including all fixeddisplay elementsImage library displayNone256 per screen max.Analog metersNone50 per screen max.Trend graphsNone1 per screen max.Broken-line graphsNone1 per screen max.Alarm list/historyNone4 per screen max.RecipesNone1 per screen max.WindowsNoneMaximum of 3Method for storing numeric values(numeral memory data and PT Status Control Area)Fixed as BCD (binary coded decimal)Selectable from BCD (binary codeddecimal) or binaryPT Status Control Area size4 words5 words (partial change of contents) (4words in NT20S-compatible mode)(User program memory)4SectionComparison between NT20S and NT21ItemNT20S1-2NT21PT Status Notify Area size3 words2 words (partial change of contents) (3words in NT20S-compatible mode)Window Control Area sizeNone9 wordsClock Data Area sizeNone4 wordsRegistering continuous screenPossibleNot possible (Use a screen switchoveras a substitute.)System tenkeyPossibleNot possible (Use the normal tenkeyas a substitute.)Lamp/Touch switch labelsFixed display (1 line only)-Interlock functionNoneOperations can be disabled from thePC by allocating interlock bits to thecorresponding touch switch, numeralinput, character string input,thumbwheel switch, or recipe.Programming Console functionNot possiblePossibleBar code reader connectionNot possiblePossibleHigh-resolution fontsNot possiblePossibleApplicable character codesCP437 (equivalent to English DOS)CP437 (equivalent to English DOS) orISO8859/1 (equivalent to English Windows)Accessible CS/CJ PC data Areas---The data Areas listed below can beaccessed in addition to the data Areasaccessible with the NT30/NT30C.*4- EM banks (EM_0 to EM_C)- Timer completion flags (TU)- Counter completion flags (CU)- Work Areas (WR)- Task flags (TK)- HR Area*1:*2:*3:*4:Multiple lines can be displayedON/OFF switching is possibleNumeral display is possibleCharacter string display is possibleThe Battery is optional.An RS-232C command system is supported instead (NT20S-ST128 only)The capacity of the flash memory that stores image data.Only when communicating with a CS/CJ-series PC on a 1:N NT Link.

(Access is not possible via a Host Link.)5SectionSystem Configuration1-31-3System ConfigurationThis section shows the configuration of a system that uses an NT21. For detailson product models, refer to Appendix F Model List (page 201).1-3-1 Peripheral Devices That Can Be ConnectedThe following peripheral devices can be connected to an NT21.HostControls the NT21 as required while controlling machines and monitoring theproduction line.Host Link: CS-series/CJ-series/C-series PCs, CVM1/CV-series PCs, SRM1Can be connected to CPU Units, Host Link Units, and SRM1. However,connection is not possible to some models of CPU Unit and SRM1 (pages 40and 69).NT Link: CS-series/CJ-series/C-series PCs, CVM1/CV-series PCs, SRM1Can be connected to CPU Units and SRM1.

However, connection is notRS-232C cable(15 m max.)An RS-422A/485 cable(500 m max.) can beconnected through anRS-232C/RS-422AAdapter.Bar code readerBar codes can be readas character strings.possible to some models (pages 51, 55, 77 and 80).Memory Link: Can be connected to a personal computer, FA computer, etc.Other companies’ PCs can also be connected.Personal computerRunning Windows 95/98/NTNT Support ToolUsed to create screens for theNT21 at the personal computerand transfer them to the NT21,and to make NT21 settings.System installerUsed to change the systemprogram of the NT21.NT21Memory UnitCan store screen dataand system program tobe read outautomatically at startup.Displays production line monitoring andcommands to the operation site, andnotifies the switch ON/OFF status andnumeric value inputs to the host.When a 1:N NT Link is being used, up to8 PTs can be connected to a single PC.• Bar code reader (page 29)• Memory Unit (page 31)NT-MF261 (made by OMRON)• NT Support Tool (page 28)NT-series Support Tool Version 4.6 for Windows (Made by OMRON)• NT-ZJCAT1-EV4.6 (CD-ROM version for IBM PC/AT and compatiblecomputers)• System installer (page 28)System Installer (made by OMRON)The System Installer is supplied as a standard accessory with the NT Support Tool (NTZJCAT1-EV4.6).Reference: The following optional devices are available.Reflection-suppressing Protective Sheets (5)6NT20S-KBA04Chemical-resistant coverNT20S-KBA01Battery3G2A9-BAT08SectionBefore Operating1-41-3-2 Connecting to the HostThe NT21 has the following two communication ports.• Serial port A:D-SUB 9-pin connector (female)For RS-232C only (The NT Support Tool and bar code readers can be connected here, but an NS-AL002 Link Adapter cannot be connected.)• Serial port B:D-SUB 9-pin connector (female)For RS-232C only (The NT Support Tool and bar code readers cannot be connected here, but an NS-AL002 Link Adapter can be connected.)The host can be connected at either of these two ports.1-4Before OperatingFollow the procedure given below to start the system of the NT21.HostNT Support ToolNT21Set the host settings.Install the PT in theoperation panel.• For the Host Link, refer topages 40 and 69, and themanuals for the Host LinkUnit and ProgrammingDevice.• For high-speed 1:N NTLinks, refer to pages 60and 83.• For Memory Links, referto pages 55 and 85(refer to the manual forthe NT Support Tool)(page 16)Connect the power supplyand peripheral device.• For a 1:1 NT Link, refer topages 51 and 77.• For 1:N NT Links, refer topages 55 and 80.Install the NT SupportTool in the computer.(page 15)Install the system program.*1(Refer to page 119 andthe NT Support Tooloperation manual.)Make the settings in thesystem installer mode.*2(page 118)Transmit the screen data.Create the screens.(Refer to the NT31/NT31C/NT631/NT631CProgrammable Terminal Reference Manualand the NT Support Tool OperationManual.)(page 123)Set the memory switches.(page 125)Connect to the NT21.Connect to the host.Using only RS-232C: Refer to Section 4 for details.Using RS-422A/485: Refer to Section 5 for details.Create the host program.Confirm the settings andcheck communication.Start operation.*1: System program installation is only done in special circumstances, for examplewhen changing the system program, or when recovering the original status of theinstalled program.

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