USB to Isolated RS485 / RS422 Adapter
Model USB-ISO-485
Category: USB to RS232 / RS485 / RS422 Adapters
- General Info
- Specifications
- Pinouts
- Images
- Troubleshooting
- Applications
DESCRIPTION
The USB-ISO-485 is an industrial-grade bi-directional USB powered 2500V opto-isolated USB to RS485/RS422 converter, which makes a half-duplex RS485 or a full-duplex RS422 available to a PC via the USB port. The USB-ISO-485 optical isolation protects the USB from voltage surges, lightning strikes, GND loops and noise conditions from the RS485/RS422 port. The USB-ISO-485 has a RJ-45 female connector, DB9 male connector on the RS485/RS422 port with optional included 5 position terminal block, and a USB type A female on the USB port. The adapter is powered from the USB port and no external power is needed. USB cable, terminal block, and drivers are included in the package. This converter operates from 300 to 128,000 baud.
The USB-ISO-485 uses the latest FTDI chipset and is fully compatible with (32 /64 bits) versions of Windows 11, 10, 8.1, 8, 7, Vista, XP, and 98: Windows Server 2022, 2019, 2016, 2012 R2, 2012, 2008 R2, 2008, 2003 R2, 2003 Mac 10.3 â€" 10.15, and Linux.
FEATURES
- Plug-and-Play (Hot-pluggable)
- Adds One RS-485/RS-422 Port Using One USB Port
- Provides 2500Vrms Isolation
- RJ-45, DB9 or Included Terminal Block
- USB 1.1 and 2.0 Compatible
- Port Powered - No External Power Needed
- Supports 300 baud to 128,000 baud rates
- 6 Feet (2m) Cable for Convenience
- Power/Transmit/Receive LED Indicators
- Data Direction Auto-turnaround - No Flow Control Necessary
- Internal 128/385 Byte TX/RX Buffers
- No IRQs, IO, DMA Required. No IRQ Conflicts
- Easy to Install Included Drivers
- Built-in 600W Surge and 15KV Static Protection
- MTBF(Mean Time Before Failure): 306,000 Hours
- 5 Year Manufacturer's Warranty
- RoHS 3, CE, FCC and REACH Certified
PRODUCT COMPLIANCES
IN STOCK
30 Day Money Back Guarantee!
5 Year Replacement Warranty!
DATASHEETS
2D CAD DRAWINGS AND 3D MODELS
ISO 9001:2015 QUALITY MANAGEMENT
Our internationally recognized ISO 9001:2015 Quality Management System (Cert. No. 743003912) with a scope of “Design, Sales, Distribution of Data Communication and IT Support Services“ was recognized and certified by TÜV Rheinland of North America known for its very demanding and stringent requirements. For more details see our Quality Policy.
| COMMUNICATION | |
| STANDARDS: | USB 2.0 and 1.1 Standards - RS-485 and RS-422 Standards |
| OPERATING SYSTEM: | Windows 8.1 (32/64), Windows 8 (32/64), Windows 7 (32/64), Vista (32/64), Server 2012, Server 2008 R2, Server 2008, Server 2003, XP (32/64), 2000, 98Se, CE, Mac 8/9/X, Linux and Android |
| BAUD RATES: | From 300 Baud To 128,000 baud |
| CONNECTOR TYPES: | USB Side: Type A Female and RS-485/RS-422 Side: RJ45, DB9 Male or 5 Position Terminal Block |
| DISTANCE: | USB Side: 10 ft (3m) and RS-485/RS-422 Side: 4000 ft (1.2m) |
| LED INDICATIONS: | RX (Yellow), TX (Green) and Power (Red) |
| DRIVERS: | FTDI Drivers are included in package |
| ELECTRICAL | |
| POWER SOURCE: | Port Powered From USB Port |
| CURRENT CONSUMPTION: | Less Than 100 mA |
| ISOLATION: | 2500 V (2500Vrms 1 min, AC) |
| STATIC PROTECTION: | 15KV Electric Static Discharge (ESD) Protection |
| SURGE PROTECTION: | 600W Surge Protection |
| MECHANICAL | |
| WEIGHT: | 4.6oz (131 grams) |
| DIMENSIONS: |
RS-485
Housing Without Terminal Block: 4.45 X 2.54 X 1.00 in (113.1 X 64.4 X 25.4 mm) RS-485 Housing With Terminal Block: 5.28 X 2.54 X 1.00 in (134.0 X 64.4 X 25.4 mm) |
| ENVIRONMENTAL | |
| OPERATING TEMP.: | -40ºF to 185ºF (-40ºC to 85ºC) |
| STORAGE TEMP.: | -40ºF to 185ºF (-40ºC to 85ºC) |
| OPERATING HUMIDITY: | 5% To 95% - No Condensation |
| QUALITY | |
| PRODUCT SAFETY: | CE, FCC and RoHS Conformance Certified |
| QUALITY MANAGEMENT: | Manufactured and Distributed to ISO 9001:2015 QMS |
| MEAN TIME BEFORE FAILURE: | 306,000 Hours |
| RELIABILITY: | Low Failure Rate - 99+% Reliability Since Inception |
| WARRANTY: | 5 Year Replacement Warranty |
RS485 / RS422 SIDE DB9 MALE OR 5-WAY TERMINAL BLOCK
| Function | T/R+ | T/R- | RXD+ | RXD- | GND |
| RS485 | D+ | D- | GND | ||
| RS422 | TX+ | TX- | RX+ | RX- | GND |
| PIN# | 1 | 2 | 3 | 4 | 5 |
RJ-45 FEMALE CONNECTOR
| Function | T/R+ | T/R- | RXD+ | RXD- | GND |
| RS485 | D+ | D- | GND | ||
| PIN# | 5 | 4 | 2,7 |
UUsing one USB-ISO-485 unit:
- Check that all connections comply with the connection diagrams.
- Perform a loop back test on one unit:
-
- Connect the T/R+ to RXD+ and T/R- to RXD- on the RS-422 port.
- Connect the USB connector on the cable to the USB port of the computer.
- Install the USB-ISO-485 FTDI driver on the computer per instructions provided.
- Running a hyper terminal program on the PC, send ASCII characters to the USB-ISO-485 converter from one PC port, and check that the characters are received at the same PC port. This tests that the transmit and receive functions of the USB-ISO-485 unit is working properly.
- When power is on the RED light will be on. When there is constant RX data you should see the YELLOW light blink. When there is constant TX data you should see the GREEN light blink.
Using two USB-ISO-485 units:
- Check that all connections comply with the connection diagrams.
- Perform a loop back test on two units:
-
- Connect the T/R+ to T/R+ and T/R- to T/R- on the USB-ISO-485 RS-485 ports.
- Connect the two USB connectors to the USB ports of the computers.
- Install the USB-ISO-485 FTDI driver on the computer per instructions provided.
- Running hyper terminal programs on both PCs, send ASCII characters to the USB-ISO-485 converter from one PC port, and check that the characters are received at the 2nd PC port. Repeat the test in the opposite direction. This tests that the transmit and receive functions of both USB-ISO-485 units are working properly.
- When power is on the RED light will be on. When there is constant RX data you should see the YELLOW light blink. When there is constant TX data you should see the GREEN light blink.
Download FREE FULL VERSION AccessPort Advanced Serial Monitor, Simulation and Data Analysis Software Tool. This software tool is great for testing converters. Supports Windows 98/XP/VISTA/WIN 7/WIN 8/WIN 10. DOWNLOAD SOFTWARE AND USER MANUAL
Below are some of the USB to Isolated RS485 / RS422 Adapter applications.
USB TO RS485 MODE OPTION:
FIGURE 1: EXTENDING THE USB DATA DISTANCE IN RS485 MODE
FIGURE 2: MASTER / SLAVE MULTI-DROP CONFIGURATION IN RS485 MODE
USB TO RS422 MODE OPTION:
FIGURE 2: EXTENDING THE USB DATA DISTANCE IN RS422 MODE
