BD-USB-485/422 interface converter with magnetic FTDI chip 1.8MPerformance Parameters
1. Meet USB1.0,1.1,2.0 standards;
2. comply with EIA RS422, EIA RS485 standard
3.USB signal: VCC, DATA-, DATA +, GND.FG
4.RS-422 signal: T / R +, T / R-, RXT +, RXD-, GND; RS-485 signal: T / R +, T / R-.GND
5.RS-422 Work: Full-duplex bi-directional point-to-many communication
6.RS-485 Work: point half-duplex two-way communication for many
7. Maximum transmission distance: USB port does not more than five meters, RS-422/485 terminal 1200 m (9600bps time)
8. Transmission media: twisted pair or shielded cable
9. Load capacity: RS-422, up to 10, including the main equipment; RS-485, up to 32
10. Baud rate: 300 baud to 921600baud automatically detect the serial transfusion rate;
11. Flow control: none, hardware and xon / xoff
12. Interface protection: Surge protection, ± 15KV electrostatic protection
13. The signal indicator: Send (TXD), receive (RXD), power (POWER)
14.USB cable with magnetic shielding, can be anti-interference;
15. Working environment: -40 to 85⁰C
Connector and Signal
DB9 male, RS-422 / RS485 output signals and terminals pin definitions
Specification
1. The four-wire full-duplex point to point
2. multipoint four-wire full-duplex
3. The two-point half-duplex
4. Double-multipoint half-duplex
Converter as full or half duplex connection, in order to prevent reflections and interference signals, you need to pick a matching line of terminal resistor (parameters: 120 ohm 1 / 4W)