NPORT 1220I MOXA RS 422 485 over usb

Features and Benefits

• Expand to 2 RS-422/485 Ports throught USB
• Supports 4-wire RS-422/485 and 2-wire RS-485 applications
• Hot plug and play
• Supports bus power and external power
• No additional I/O, IRQ required
• RS-422/485 speed up to 115.2 Kbps
• Supports USB 1.1, full rate speed up to 12 Mbps
• Built-in 16 KV ESD Surge Protection
• 2 KV Isolation Protection available with 1220I
• Low cost USB-to-serial solution
• Easy to install and use
• Plug and unplug without shutting down your PC

Introduction

NPort 1220 gives your laptop or workstation the ability to communicate between a USB (Universal Serial Bus) port and up to 2 RS-422/485 serial peripherals. NPort 1220 adds 2 Windows serial COM ports via its USB port, and is compatible with new and legacy RS-422/485 devices. USB plug and play allows easy serial port expansion that requires no IRQ, DMA, or I/O port resources. Users no longer need to open the chassis or power down the system, saving setup time and cost.

Specifications

Operating Systems: Windows 98/2000/XP, Linux
USB Compliance:
     USB 1.1, 1.0
     USB 2.0 backwards compatible Connector
     USB type B Speed: Full speed 12 Mbps

Serial Interface

Signals:
     RS-422:  TxD+/-, RxD+/-, GND
     4-wire RS-485:  TxD+/-, RxD+/-, GND
     2-wire RS-485: Data+/-, GND

Connector

Terminal Block FIFO: 
     128 bytes Serial line protection
     16 KV ESD for all signals
Serial Communication Parameters Parity: None, Even, Odd
Data bits: 7, 8
Stop bit: 1, 2
Flow control: RTS/CTS Speed  600 bps to 115.2 Kbps

Power Requirements

Power Input: 12 to 48 VDC (external) or 5 VDC (Bus power)

Enter Specification Type:
     BUS: 140 mA at 5 VDC
     Ext. PWR: 306 mA at 12V
Mechanical Power Input: 12 to 48 VDC (external) or 5 VDC (Bus power)
Gross Weight: 220 ± 5 g (0.48 lb)
Dimensions: (W x D x H) 170 x 110 x 30 mm

Environmental

Operating Temperature: 0 to 55°C (32 to 131°F)
Storage Temperature: -20 to 85°C (-4 to 185°F)
Operating Humidity: 5 to 95% RH
Regulatory Approvals: EMC, FCC (Class B), CE (Class B)
Safety: UL, CUL, TÜV