B&B Electronics UNO-2170 user manual 5 RS-232/422/485 Selection, RS-422/485 jumper setting

Page 16

2.3.5 RS-232/422/485 Selection

COM3 and COM4 support 9-wire RS-232, RS-422 and RS-485 inter faces. 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.

Jumper setting for RS-422/485 interface: (Default setting). (JP4 and JP5)

Figure 2.3: RS-422/485 jumper setting

Jumper setting for RS-232 interface: (JP4 and JP5)

Figure 2.4: RS-232 jumper setting

UNO-2170 User Manual

10

Image 16

Contents UNO-2170 Support Product Warranty Page Contents System Settings and Pin Assignments Appendix Programming the Watchdog TimerAppendix Overview Introduction Hardware Specifications Relative humidity 95% @ 40C Weight 1.6 kgSafety Precautions Always ground yourself to remove any static electricChassis Dimensions Chassis DimensionsPage Hardware Functionality RS-232 Interface COM1~COM2 Front panel of UNO-2170RS-232/422/485 Interface COM3~COM4 1 16C550 UARTs with 16-byte standard2 RS-422/485 detection Automatic Data Flow Control Function for RS-485RS-422/485 jumper setting 5 RS-232/422/485 SelectionPage IRQ and Address Setting Vector address for share IRQ 1D0HLAN Ethernet Connector Power ConnectorPS/2 Keyboard and Mouse Connector USB ConnectorVGA Display Connector Pcmcia PC Card SlotReset Button Battery Backup SramLithium Battery Specification Page Initial Setup Inserting a CompactFlash Card Chassis GroundingInstalling a Hard Disk Connecting PowerBios Setup and System Assignments Page System Settings Pin Assignments Appendix a System Settings and Pin Assignments 1SystemI/OAddressandInterruptAssignmentTable A.2 UNO-2170 Interrupt Assignment Board Connectors and Jumpers Figure A.2 UNO-2170 connector and jumper locations back-sideTable A.3 UNO-2170 Connectors and Jumpers RS-232 Standard Serial Port COM1~COM2 Ethernet RJ-45 Connector LAN1~LAN2 RS-232/422/485 Serial Port COM3~COM4Phoenix Power Connector PWR USB Connector USB1~USB2 Page Programming Watchdog Timer Appendix B Programming the Watchdog Timer AppendixB