4 USB-2-485
Interface
Converter
Trinamic Motion Control GmbH & Co KG
Sternstraße 67
D – 20357 Hamburg, Germany
Phone +49-40-51 48 06 - 0
FAX: +49-40-51 48 06 - 60
http://www.trinamic.com
2 The USB-2-485 Hardware
2.1 Overview
The USB-2-485 device has two connectors, a USB type B connector for connecting the device to a PC and a 9-pin
D-SUB male connector for connecting it to a 2-wire half-duplex RS485 bus.
Figure 1: Overview
2.2 Connectors
2.2.1 USB
The USB interface is a USB 2.0 full speed (12Mbit/s) device interface which is USB 2.0 and USB 1.1 compatible.
Pin
Function
1 V
BUS
(+5V)
2 D-
3 D+
2 1
3 4
4 GND
Table 1: USB type B connector, pin assignment
Type B USB Connector
USB
RS485
9-pin D-SUB (male)
USB
RS485
