NT21_Setup Manual (V068-E1-1) (986757), страница 14
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To use the Host Link method, connect by RS-422A.Settings at the HostWhen using the RS-422A type Host Link method, the settings shown below mustbe made at the host (depending on the Unit, some of these settings may not benecessary, or settings not shown here may be necessary).Item70Setting at HostI/O portRS-422ABaud rateSet the same baud rate as for the NT21. (*1)Transfer codeASCII, 7 data bits, 2 stop bitsParityEven1-to-1/1-to-N1-to-N(*2)Command levelLevel 1, 2, 3Unit #00SectionConnecting to the Host’s RS-422A/485 Port5-1*1 Set the Host Link baud rate at 9,600 bps or 19,200 bps with the Comm. Speedmemory switch at the NT21.
For details, refer to Setting the Host Link Method(page 125).*2 The 1-to-N setting enables BCC (Block Check Character). It is not actuallypossible to connect more than one NT21 in a single Host Link.The setting methods for each model of Unit are described below.Connecting to a C-series Host Link UnitC200H/C200HS/C200HE(-Z)E/C200HG(-Z)E/C200HX(-Z)ERack-mounting model: C200H-LK201-V1Setting the Front SwitchesSet each switch with a flat blade screwdriver so that the values or symbols in thesetting value window agree with the following:LK201XMTRUNRCVERROR@ Unit # (SW1, SW2)Set these switches to 0.SW2SW10052SW3@ Command level, parity, and transfer code (SW4)Set this switch to 2.SW4@ Baud rate (SW3)Set this switch to 5 to select 9,600 bps.Set this switch to 6 to select 19,200 bps.Setting the Rear Switches@ Terminator setting (selector switch)Set this switch to ON.Terminator1-to-1 (ON)ON1-to-N (OFF)OFF@ 1-to-1/1-to-N protocol selection (selector switch)Set this switch to 1-to-N (OFF).Connecting to a CVM1/CV-series Host Link UnitCVM1/CV-series Rack-mounting model: CV500-LK201A CVM1/CV-series Host Link Unit (CV500-LK201) has two connectors (communication ports 1 and 2).
To use the RS-422A type Host Link method, set communication port 2 to RS-422A.Communication port 2 is a 9-pin connector that allows selection of the RS-232Cor RS-422A method. When this port is used with the RS-422A method, the I/Oport selector switch on the front of the Unit must be set to RS-422A (the lowerposition).CPU Bus Unit SettingsWhen connecting to a CVM1/CV-series Host Link Unit, set the following communication conditions for the CPU Bus Unit settings.ItemSetting at HostBaud rateSet the same speed as for the NT21. (*1)Transfer codeASCII, 7 data bits, 2 stop bits71SectionConnecting to the Host’s RS-422A/485 PortItem5-1Setting at HostParityEven1-to-1/1-to-N1-to-N(*2)Command levelLevel 1, 2, 3*1 Set the Host Link baud rate at 9,600 bps or 19,200 bps with the Comm.
Speedmemory switch at the NT21. For details, refer to Setting the Host Link Method(page 125).*2 The 1-to-N setting enables BCC (Block Check Character). It is not actuallypossible to connect more than one NT21 in a single Host Link.Set the CPU Bus Unit settings directly from a Programming Device (e.g., SYSMAC Support Software).For details on the CPU Bus Unit settings, refer to the SYSMAC CVM1/CV-seriesHost Link Unit Operation Manual (W205-E1-j).Setting the Front Switches@ Unit # (SW3, SW4)Set these switches to 0.Communications port 1(RS-232C)Communications port 2(RS-232C/RS-422A)I/O port selector switchRS-232C@ I/O port selection (selector switch)Set this to RS-422A.RS-422A@ Communication condition setting (pin 1)Set this pin to OFF.Communication is executed in accordance with theCPU Bus Unit system settings made at the PC.
Theinitial values for the system settings are as follows.- Baud rate: 9,600 bps- Parity: Even- Xon/Xoff control: Not executed- Communication method: Full duplex- Stop bits: 2 stop bits- Data length: 7 bits@ Terminating resistance setting (selector switch)Set this to ON.Connecting to a CJ-series Serial Communications UnitCJ-series: CJ1W-SCU41 (Port 1 is an RS-422A/485 port.)Setting the Front SwitchesSet the unit number of the Serial Communications Unit with the rotary switch onthe front of the Unit. Set the unit number with a flat blade screwdriver. Also, set72SectionConnecting to the Host’s RS-422A/485 Port5-1the communications mode switch to select 4-wire (RS-422A) communicationsand turn ON the terminator switch to enable the terminating resistance.Terminator switchTurn ON to connect the terminator.(Set terminator ON.)Unit number switchSet the unit number between 0 and Fso that it will not duplicate thenumbers used in other Units.Communications mode switchSet the 2-wire/4-wire selector switch to“4” to select 4-wire (RS-422A)communications.Allocation DM Area Settings for CPU UnitSettings are written from the Programming Device (a Programming Console orCX-Programmer) directly into the allocated DM Area (PC Setup) of the CPUUnit.
After the settings are written, they become effective by turning the powerON, restarting the Unit, restarting the communication port, or execution of theSTUP instruction.The following table shows the words allocated in the DM Area and the settings.m = DM30000 + 100 × unit numberAllocated DM wordValuePort 1Settings8000Host Link mode, 2 stop bits, even parity, datalength 7 bits0000Baud rate 9,600 bps.0007Baud rate 19,200 bps.m+20000Transmit delay time 0 ms.m+30000No CTS control Unit No.0 for Host Linkmm+1Connecting to a CPU UnitCVM1/CV-series (-EVj) CPU UnitsCVM1-CPU01-EV2/CVM1-CPU11-EV2/CVM1-CPU21-EV2PC SetupWhen connecting to a CVM1/CV-series CPU Unit, set the following communication conditions for the PC Setup.ItemSetting at HostBaud rateSet the same baud rate as for the NT21. (*1)Stop bits2 stop bitsParityEvenData lengthASCII 7 bitsUnit #00*1 Set the Host Link baud rate at 9,600 bps or 19,200 bps with the Comm.
Speedmemory switch at the NT21. For details, refer to Setting the Host Link Method(page 125).Set the PC Setup directly from a Programming Device (e.g., SYSMAC SupportSoftware).For details on the PC Setup, refer to the SYSMAC CVM1/CV500/CV1000/CV2000 Operation Manual: Ladder Diagrams (W202-E1-j).73SectionConnecting to the Host’s RS-422A/485 Port5-1Setting the Front Switches@ Host Link communication methodselection (selector switch)Set this to RS-422A.@ Communications type setting (pin 3)Set pin 3 to OFF.(for Host Link communication)I/O port selector switchRS-232CRS-422A@ Host Link default value settings(pin 4)To effect the existing DIP switchsettings, set pin 4 to ON.To effect the values set in the PC Setup,set pin 4 to OFF.NoteFor CPU Units manufactured before orduring June 1995 (lot No. jj65), theexisting DIP switch settings differ fromthe PC Setup default values as follows.- Existing DIP switch settings:2,400 bps, 1 stop bit, even parity, 7 bitdata length- PC Setup default values:9,600 bps, 2 stop bits, even parity, 7bit data lengthFor CPU Units manufactured from July1995 onward (lot No.
jj75), thestipulated values in the DIP switchsettings also are 9,600 bps and 2 stopbits.@ Terminator setting (pin 6)Set this switch to ON.(Set terminator ON.)C200HX/HG/HE(-Z)E, CPM1, CPM2A, CPM2C, CQM1H, or SRM1The connection method depends upon the model of PC being used, as shown inthe following table.PC modelConnection methodC200HX/HG/HE(-Z)E• Connect to the RS-422A port (port A) on a Serial Communications Board.CQM1H• Connect to the RS-422A port (port 2) on a Serial Communications Board.CPM1• Connect to the peripheral port through a CPM1-CIF11RS-422A Adapter.CPM2A, SRM1• Connect to the peripheral port through a CPM1-CIF11RS-422A Adapter.CPM2C• Connect to the peripheral port (on a CPM2C-CN111 orCS1W-CN114 Connecting Cable) through a CPM1-CIF11RS-422A Adapter.(The CPM2C-CN111 splits the Unit’s Communication Portinto a RS-232C port and a peripheral port.)Reference:S There are no Serial Communications Boards for the C200HX/HG/HE(-Z)E inwhich port B is the RS-422A port.S There are no Serial Communications Boards for the CQM1H in which port 1 isthe RS-422A port.PC Setup SettingsWhen connecting to a C200HX/HG/HE(-Z)E or CPM1, CPM2A, CPM2C,74SectionConnecting to the Host’s RS-422A/485 Port5-1CQM1H CPU Units or SRM1, set the following communication conditions for thePC Setup.ItemSetting at HostI/O portRS-422ACommunication modeHost Link modeBaud rateSet the same baud rate as for the NT21.
(*1)Stop bits2 stop bitsParityEvenData lengthASCII 7 bitsUnit #00*1 Set the Host Link baud rate at 9,600 bps or 19,200 bps with the Comm. Speedat the NT21. For details, refer to Setting the Host Link Method (page 125).Set the PC Setup settings directly from a Programming Device (e.g., CX-Programmer).For details on operations relating to the PC Setup, refer to the manual for the PCthat is used.The PC Setup addresses and settings to be made depending on the Unit towhich the connection is made are shown below.When using port A of the Serial Communications Board of C200HX/HG/HE(-Z)EWordWriting ValueSettingsDM65550001Host Link mode, no CTS controlCommunication conditions set by the contents of DMDM65560303Data length 7 bits, 2 stop bits, even parity, baud rate:9,600 bps0304Data length 7 bits, 2 stop bits, even parity, baud rate:19,200 bps0000Unit # 00DM6558When using a CPM1, CPM2A, CPM2C, SRM1WordWriting ValueSettingsDM66500001Host Link mode, no CTS controlCommunication conditions set by the contents of DMDM66510303Data length 7 bits, 2 stop bits, even parity, baud rate:9,600 bps0304Data length 7 bits, 2 stop bits, even parity, baud rate:19,200 bps0000Unit # 00DM6653When using a CQM1HWordWriting ValueSettingsDM65500001Host Link mode, no CTS controlCommunication conditions set by the contents of DMDM65510303Data length 7 bits, 2 stop bits, even parity, baud rate:9,600 bps0304Data length 7 bits, 2 stop bits, even parity, baud rate:19,200 bps0000Unit # 00DM655375SectionConnecting to the Host’s RS-422A/485 Port5-1Connecting to a CPM2COnly the CPM2C PCs do not have the same kind of port connectors found onCS/CJ-series PCs.
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