B&B Electronics UNO-2170 RS-232/422/485 Serial Port COM3~COM4, Ethernet RJ-45 Connector LAN1~LAN2

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A.4 RS-232/422/485 Serial Port (COM3~COM4)

Table A.5: RS-232/422/485 serial port pin assignments

Pin	RS-232	RS-422	RS-485
1	DCD	Tx-	DATA-
2	RxD	Tx+	DATA+
3	TxD	Rx+	NC
4	DTR	Rx-	NC
5	GND	GND	GND
6	DSR	NC	NC
7	RTS	NC	NC
8	CTS	NC	NC
9	RI	NC	NC

A.5 Ethernet RJ-45 Connector (LAN1~LAN2)

Table A.6: Table A-5: Ethernet RJ-45 connector pin assignments

Pin	10/100Base-T Signal Name

1XMT+

2XMT-

3RCV+

4NC

5NC

6RCV-

7NC

8NC

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AppendixA

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Contents UNO-2170 Support Product Warranty Page Contents Appendix Programming the Watchdog Timer System Settings and Pin AssignmentsAppendix Overview Introduction Relative humidity 95% @ 40C Weight 1.6 kg Hardware SpecificationsAlways ground yourself to remove any static electric Safety PrecautionsChassis Dimensions Chassis DimensionsPage Hardware Functionality Front panel of UNO-2170 RS-232 Interface COM1~COM21 16C550 UARTs with 16-byte standard RS-232/422/485 Interface COM3~COM42 RS-422/485 detection Automatic Data Flow Control Function for RS-4855 RS-232/422/485 Selection RS-422/485 jumper settingPage Vector address for share IRQ 1D0H IRQ and Address SettingPower Connector LAN Ethernet ConnectorPS/2 Keyboard and Mouse Connector USB ConnectorPcmcia PC Card Slot VGA Display ConnectorBattery Backup Sram Reset ButtonLithium Battery Specification Page Initial Setup Chassis Grounding Inserting a CompactFlash CardConnecting Power Installing a Hard DiskBios Setup and System Assignments Page System Settings Pin Assignments 1SystemI/OAddressandInterruptAssignment Appendix a System Settings and Pin AssignmentsTable A.2 UNO-2170 Interrupt Assignment Figure A.2 UNO-2170 connector and jumper locations back-side Board Connectors and JumpersTable A.3 UNO-2170 Connectors and Jumpers RS-232 Standard Serial Port COM1~COM2 RS-232/422/485 Serial Port COM3~COM4 Ethernet RJ-45 Connector LAN1~LAN2Phoenix Power Connector PWR USB Connector USB1~USB2 Page Programming Watchdog Timer Appendix B Programming the Watchdog Timer AppendixB