NT21_Setup Manual (V068-E1-1) (986757), страница 6
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The pin arrangements for the RS-232C connector and the RS-422A/485 terminal block are as follows.RS-232C ConnectorPin20Signal nameSignal direction(Link Adapter ⇔ NT21)Code1Not used------2Receive dataRDLink Adapter ← NT213Send dataSDLink Adapter → NT214Clear to sendCS(shorted to RS internally)Link Adapter ← NT215Request to sendRS(shorted to CS internally)Link Adapter → NT216+5 V (30 mA) input forLink Adapter+5 VLink Adapter ← NT217 and 8Not used---Pins 7 and 8 are shortedinternallySectionConnecting Link AdaptersPinSignal name3-2Signal direction(Link Adapter ⇔ NT21)Code9Signal groundSG---ConnectorhoodFunction groundFG---RS-422A/485 Terminal BlockPinSignal nameSignal direction(Link Adapter ⇔RS-422A/485 device)Code1Frame groundFGConnects to the Unit’sfunctional ground terminal.2Receive data (+)RDB (+)Link Adapter ← Device3Send data (+)SDB (+)Link Adapter → Device4Request to send (+)RSB (+)Link Adapter → Device5No contactNC---6Receive data (–)RDA (–)Link Adapter ← Device7Send data (–)SDA (–)Link Adapter → Device8Request to send (–)RSA (–)Link Adapter → DeviceCompatible Crimp TerminalsUse crimp terminals for M3 screws.Fork terminalRound terminal6.2 mm max.6.2 mm max.MakerJ.S.T.
Mfgg Co.,, Ltd.MolexRS-422A/485 CableShield ConnectionsStyleForkRoundForkRoundModelV1.25-N3AV1.25-MS3VSY1.25-3.5LRAV1.25-3Compatible wireAWG22 to AWG16(0 2 to 1(0.251.656 mm2)AWG22 to AWG16(0 3 to 16 mm2)(0.31.65When using RS-422A or RS-485 cables for long-distance communications, donot ground the shield at both ends of the communications line because large currents can flow through the shield due to the difference in potential at the twogrounding points. We recommend grounding the shield at one end, as shown inthe following diagram.Signal lineHostPTRS-422A/485shieldPTConnect to FG on theterminal block.PTNS-AL00221SectionConnecting Link AdaptersBlock DiagramRS-232CD-SUB 9-pin+5 VSGThe following diagram shows the internal block diagram of the NS-AL002-E LinkAdapter.
Refer to this diagram only when wiring custom cables or connectingdevices with special interfaces.CaseRS-422A/4858-pin terminal block169+5 VRSDRERNC37SDBSDASW1-3SW1-235RCS52-wire/4-wire2SW1-1SDFGRS-422A/485 Dr/RecRRS-232CDr/RecRD3-22RDB6RDA48RSBRSASW1-44Terminatingresistance783-2-2 Connecting an NT-AL001 Link AdapterThe NS-AL001 Link Adapter connects to serial port A or B of the NT21 with anRS-232C cable and converts the RS-232C communications to RS-422A orRS-485.
(Serial ports A and B cannot be used simultaneously.)The NT21 supplies +5 V power (150 mA max.) to the Link Adapter through pin 6of the RS-232C connector, so an external power supply is not required.Note221. The RS-232C connector is not insulated from the RS-422A/RS-485 connector within the NT-AL001 Link Adapter.2. Always turn OFF the NT21’s power supply before installing/removing a LinkAdapter or connecting/disconnecting cables.SectionConnecting Link AdaptersDimensions3-2The following diagram shows the dimensions of the NT-AL001 Link Adapter.
Alldimensions are in mm.53.5(2.11)110 (4.33)om Ron4 (0.16)74.5 (2.93)100.2 (3.94)105 (4.13) max.NT–AL001-E(30)(1.18)45 (1.77)30 (1.18)Units: mm (inch)Dimensions with RS-422A Terminal Block Cover Closed30 114 100.2 mm (W H D)Dimensions with RS-422A Terminal Block Cover Open30 114 119.5 mm (W H D)Installation and RemovalThe NT-AL001 Link Adapter can be mounted on a DIN Track or in a control panel.
The Link Adapter’s RS-422A terminal block can be removed easily.Mounting to a DIN TrackLatch the hook (a) on the rear of the Link Adapter onto the top edge of the DINTrack, and pivot the Link Adapter downwards (b) as shown in the diagram below.Next, fit End Plates at the right and left of the Link Adapter to secure it so that itcannot shift laterally.(a)(b)Removal from a DIN TrackRemove the End Plates from the right and left of the Link Adapter, insert a flat23SectionConnecting Link Adapters3-2blade screwdriver into the catch at the bottom of the Link Adapter, and pull itdown to release the catch.Mounting to a Control PanelThe control panel must be at least 2 mm (5/64 inch) thick.
Drill two mountingscrew holes in a control panel and secure the Link Adapter with screws.30(1.18)100(3.94)110(4.33)21(0.83)2-M4 holesUnits: mm (inch)Note The control panel must be at least 2 mm (5/64 inch) thick for a secure and strongmount.SpecificationsThe following tables list the NT-AL001 Link Adapter’s general and communications specifications.General SpecificationsItemSpecificationDimensionsWith RS-422A terminal block cover closed:30 114 100.2 mm (W H D)With RS-422A terminal block cover open:30 114 119.5 mm (W H D)WeightAmbienttemperature24200 g max.Operating0 to 55_CStorage–20 to 75_COperating ambient humidity10% to 90% (with no condensation)Rated power supply voltage+5 V " 10%(through pin 6 of the RS-232C connector)Rated power supply current150 mA max.Inrush current0.8 A max.Insulation resistance20 MΩ min., measured between the RS-422Aterminal signal lines and FG terminal (with a500 VDC megger)Dielectric strength1,500 VAC for 1 minute between the RS-422Aterminal signal lines and the FG terminalLeakage current: 10 mA max.Operating environmentNo corrosive gasesSectionConnecting Link AdaptersItem3-2SpecificationVibration resistanceConforms to JIS C0911, 60 minutes each in X, Y,and Z directionsShock resistanceConforms to JIS C0912, 147 m/s2, 3 times each inX, Y, and Z directionsCommunications Specifications (RS-422A/485 Interface)ItemSpecificationBaud rate115.2k bps max.Transmission distance2 m max.Connector9-pin D-SUB connector (female)Communications Specifications (RS-422A/485 Interface)ItemDIP Switch SettingsSpecificationBaud rate115.2k bps max.
(depends on the RS-232C baudrate)Transmission distance500 m max.Terminal block configuration8-terminal detachable terminal block, M3.0The NT-AL001 Link Adapter has a 6-pin DIP switch that sets the RS-422A/RS-485 communication conditions. Set the DIP switch before connecting thecommunications cable.(Factory settings)ON123456omR onNT–AL001-ESW1-1: Not used (always ON)SW1-2: Built-in terminator setting- OFF Terminator not set- ON Terminator setSW1-3 and SW1-4: 2-wire/4-wireSW1-3SW1-4OFF2-wire (RS-485)ONSW1-3SW1-4OFF4-wire (RS-422A)ONSW1-5 and SW1-6: RS-422A send modeSW1-5SW1-6OFFNo RS/CS controlONSW1-5OFFONSW1-6SW1-5OFFONSW1-6RS-232C CS control (high)(Data sent at CS high)RS-232C CS control (low)(Data sent at CS low)25SectionConnecting Link Adapters3-2When using Host Link or 1:1 NT Link communications, set the RS-422A sendmode to “no RS/CS control” by turn OFF both SW1-5 and SW1-6.When using 1:N NT Link communications (standard or high-speed), set thecommunications mode to “RS/CS control” by turning ON either pin SW1-5 orSW1-6.Note1.
Do not turn ON both SW1-5 and SW1-6 at the same time. This may damageinternal circuits.2. The power supply to the device supplying +5 V must be turned OFF beforestarting wiring work.3. Before connecting the RS-232C cable and turning ON the power to anRS-232C device such as a PT (i.e., turning ON the power to the Link Adapter), check that the cable is wired correctly and that the DIP switch settingsare correct. If the power is turned ON and there is a wiring fault, the internalcircuits of the Link Adapter or the RS-232C device may be damaged.4. When the Link Adapter is connected to a C200HX/HG/HE (-ZE), CQM1H,CS1G/H, CS1G/H-H, or CJ1G model of OMRON PC as an RS-422A device,set pins SW1-5 and SW1-6 as indicated below.SW1-5OFFSW1-6ON5 6Terminal Pin AllocationThe NT-AL001-E Link Adapter has a terminal block for an RS-422A/485 interface connection and a connector for an RS-232C interface connection.The pin allocations for the RS-422A/485 terminal block and the RS-232C connector are as follows.RS-422A/485 Terminal BlockThe CSB and CSA signals are for specialized applications.Pin7531Signal nameSignal direction(Link Adapter ⇔ Device)Code8Request to send (–)CSALink Adapter → RS-422A/485 Device87Request to send (+)CSBLink Adapter → RS-422A/485 Device66Receive data (–)RDALink Adapter ← RS-422A/485 Device45Receive data (+)RDBLink Adapter ← RS-422A/485 Device24Send data (–)SDALink Adapter → RS-422A/485 Device3Send data (+)SDBLink Adapter → RS-422A/485 Device2Signal groundSG (GND)---1Functional ground---Compatible Crimp TerminalsUse crimp terminals for M3 screws.Fork terminal6.2 mm max.6.2 mm max.ManufacturerJ.S.T.
Mfgg Co.,, Ltd.Molex26Round terminalStyleForkRoundForkRoundModelV1.25-N3AV1.25-MS3VSY1.25-3.5LRAV1.25-3Compatible wireAWG22 to AWG16(0 25 to 165 mm2)(0.251.65AWG22 to AWG16(0 3 to 1(0.31.656 mm2)SectionConnecting Link Adapters3-2RS-232C ConnectorThe connector hood is connected to the RS-422A terminal block’s frame groundterminal.Pin1234CodeSignal direction(RS-232C Device ⇔ Link Adapter)61Not used------72Send dataSDRS-232C Device ← Link Adapter83Receive dataRDRS-232C Device → Link Adapter4Request to send(shorted to CS internally)RSRS-232C Device ← Link Adapter5Clear to send(shorted to RS internally)CSRS-232C Device → Link Adapter6+5 V (150 mA) input for LinkAdapter+5 VRS-232C Device → Link Adapter7Data set ready(shorted to ER internally)DRRS-232C Device → Link Adapter8Data terminal ready(shorted to DR internally)ERRS-232C Device ← Link Adapter9Signal groundSG---95Signal nameThe following diagram shows the internal block diagram of the NT-AL001-E LinkAdapter.
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