Microsoft UNO-3074 4 RS-232/422/485 Selection, 5 RS-485 Auto Flow/RS-422 Master/Slave Selection

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2.3.4 RS-232/422/485 Selection

COM3 and COM4 support 9-wire RS-232, RS-422 and RS-485 interfaces. The system detects RS-422 or RS-485 signals automatically in RS-422/ 485 mode.

To select between RS-422/485 and RS-232 for COM3, adjust JP4. To select between RS-422/485 and RS-232 for COM4, adjust JP5.

You can refer to figures below to set the JP4 and JP5.

Note: Please refer to Appendix A.2 Figure A.3 for location of JP4 and JP5 location

Jumper setting for RS-422/485 interface: (Default setting).

Figure 2.2: RS-422/485 Jumper Setting

Jumper setting for RS-232 interface:

Figure 2.3: RS-232 Jumper Setting

2.3.5RS-485 Auto Flow/RS-422 Master/Slave Selection

You can set the “Auto Flow Control” mode of RS-485 or “Master/Slave” mode of RS-422 by using the SW2 DIP switch for each RS-422/485 port. (Refer to Figure A.3 for location of SW2).

In RS-485, if the switch is set to “Auto”, the driver automatically senses the direction of the data flow and switches the direction of transmission. Then no handshaking is necessary. In RS-422, if DIP switch is set to “On”, the driver is always enabled, and always in high or low status.

UNO-3074 User Manual

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Contents UNO-3074 Copyright AcknowledgementsSupport Product Warranty 2 years Declaration of Conformity FCC Class a Technical Support and AssistanceSafety Instructions Safety Precaution Static Electricity Contents Chapter Initial Setup Appendix Programming the Watchdog Timer Page Overview Introduction Open Architecture Designed for AutomationFront Access Connections An Industry-Proven DesignOff-the-shelf Universal PCI Extensions Designed to Fit Into Control CabinetsOnboard DI/O for Counter, Alarm/Event Handling Flexible Networking OptionsPopular Operating Systems and Rapid Application Development Hardware Specifications Battery Backup RAM 512 KB ChipsetCPU RS-232 SpeedTwo 16-bit Counters/Timers Ch Isolated Digital Input DI0~DI3Ch Isolated Digital Output DO0~DO3 Anti-ShockSafety Precautions Power Supply 16 ~ 36 VDCPower Consumption 24 W Typical Chassis Size WxHxDChassis Dimensions Chassis Dimensions for CeleronM 1GHzChassis for Pentium 1.8GHz or Faster CPU Accessories Packing ListHardware Functionality Front Panel of UNO-3074 RS-232 Interface COM1~COM2 RS-232/422/485 Interface COM3~COM41 16C550 UARTs with 16-byte Fifo Standard 2 RS-422/485 Detection4 RS-232/422/485 Selection 5 RS-485 Auto Flow/RS-422 Master/Slave Selection6 IRQ, I/O Address and Transmission Rate Setting Auto Flow & RS-422 Slave/MastersVector address for share IRQ 1D0H IRQ Setting via Switch 1 at SW3 Transmission Rate Switch 2 at SW3LAN Ethernet Connector Onboard Isolated Digital InputTermination Resistor JP6 Pin AssignmentsDigital Input Connector Signal Description Isolated InputsInterrupt Function of the DI Signals IRQ LevelInterrupt Control Register Interrupt Control Register Bit MapInterrupt Enable Control Function Interrupt Triggering Edge ControlInterrupt Flag Bit Digital Output Connector Signals Onboard Isolated Digital OutputPower On Configuration 10 Digital Output Power On ConfigurationIsolated Outputs Isolated Digital Output Connection Onboard Isolated Counter/Timer Counter/Timer Control Register11 Counter/Timer Control Register Bit Map Counter 0 Function Block Counter 1 Function Block4 32-bit Counter Function Block CTR32Set=1 Counter Clock SourceCounter Internal Clock Counter Gate SourceCounter Output Destination Counter Interrupt Flag14 Counter Gate Source Control Bit 15 Counter Output Destination Control BitPower Input Cascaded 32-bit Counter17 32-bit Counter Control Bit 12 LED Locations to Monitor Power Input 18 Power Register Bit Map LED and Buzzer for System Diagnosis19 LED & Buzzer Control Register 20 Programmable LED Control BitUSB Connector PS/2 Keyboard and Mouse ConnectorPcmcia PC Card Slot 21 Programmable Buzzer Control BitPage Make sure the IRQ of Pcmcia device is VGA Display Connector Page Battery Backup Sram 14 LED Location for Battery BackupReset Button Lithium Battery SpecificationOutput voltage 3 VDC Initial Setup Connecting Power Inserting a CompactFlash CardJP2 on mainboard refer to Figures A.3 JP1 on daughterboard refer to Figure A.4Installing a Hard Disk Correct way is shown by the first figure belowPage Page Page IDE Connector CN1 and CN2 Installing a PCI-bus Card 1st Anti-Vibration Rubber2nd PCI-bus Card Installation Installing Power Cable Mounting UNO-3074UNO-3074 Improper Installation UNO-3074 Mounting CautionUNO-3074 Correct Installation Bios Setup and System Assignments Page System Settings and Pin Assignments System I/O Address and Interrupt Assignments Table A.1 UNO-3074 System I/O PortTable A.2 UNO-3074 Interrupt Assignments Interrupt No Interrupt SourceBoard Connectors and Jumpers Figure A.1 Backplane Connector & JumpersFigure A.3 Mainboard Connector & Jumpers Front Figure A.4 Daughter Connector & Jumpers Front Figure A.5 Daughter Connector & Jumpers Back Table A.3 Connector and Jumper Descriptions Table A.4 Connector and Jumper DescriptionsTable A.5 Connector & Jumper Descriptions SW1UNO-3074 Control Register Table A.6 UNO-3074 Control RegisterRS-232 Standard Serial Port COM1~COM2 Table A.7 RS-232 Serial Port Pin AssignsEthernet RJ-45 Connector LAN1~LAN2 Table A.9 Ethernet RJ-45 Connector Pin AssignsRS-232/422/485 Serial Port COM3~COM4 Table A.8 RS-232/422/485 Serial Port Pin AssignsPower Screw Terminal PWR Table A.10 Power Connector Pin AssignmentsPS/2 Keyboard and Mouse Connector USB Connector USB1~USB4Table A.11 Keyboard & Mouse Connector Pins Table A.12 USB Connector Pin AssignmentsTable A.13 VGA Adaptor Cable Pin Assignmen Page Programming the Watchdog Timer Appendix B Programming the Watchdog Timer