BB-485TBLED数据手册计算机设备的适配器转换器规格书PDF

描述 Description

Model BB-485TBLED converts unbalanced, full-duplex RS-232 signals to balanced, full or half-duplex RS-422 or RS-485 signals. RS-485 is an enhanced version of the RS-422 Standard allowing multiple drivers and receivers on a two-wire or four-wire system.The RS-232 port, configured as a DCE port, has a female DB25 connector with pins 2 (TD input), 3 (RD output), and 7 (Signal Ground) supported. Pins 4 (RTS) and 5 (CTS) are tied together, and pins 6 (DSR), 8 (CD), and 20 (DTR) are also tied together. Pins 1 (Frame Ground) and 7 (Signal Ground) are connected straight through to the RS-485 terminal blocks. The RS-485 terminal blocks support Transmit Data (A-) and (B ), Receive Data (A-) and (B ), Frame Ground, Signal Ground, and 12 VDC input.

特性 Features

·Converts RS-232 signals to RS-485 signals

·Data rate: up 115.2 k bps

·Quick inline installation

·Extends data communication up to 1219 meters (4000 ft)

·Terminal block for easy wiring

·LEDs for Receive and Transmit data lines

·Multi-drop capability - up to 32 receivers per driver

·12 VDC power supply required (sold separately)