Our USB to RS485 converters
We are specialized in making converters for usb, RS485, RS232 and RS422, targeting customers who needs converters that have better quality than the cheap un-isolated, but smaller and less expensive than the industrial types of converters.
All our converters are isolated, powered from the usb side, and with virtual comport drivers.
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| Dublin, Ireland||Jul. 2013|
|Very satisfied with the service and product supplied by Hjelmslund. Very fast response time, even when we required a special assembly. High quality product, worked excellently first time.|
John Clarke - Nines Engineering
Website : Nines-engineering.com
USB485-STISO - 2 wire half duplex RS485 converter.
USB485-STISO : USB to RS485 converter with 2500 volt isolation
Connect your control network to the PC with an isolated RS485 converter, using it as a virtual com port.
Its isolation barrier and readiness for Modbus gives it the quality needed for
use in industrial automation.
2 wire half duplex w. Automatic Rx/Tx switching and Rx/Tx FIFO
for smooth operation - no programming of RTS to set the
direction, and no dip-switches.
USB485-STIXL - as STISO, but larger terminals.
USB485-STISO/STIXL product sheet
Buy USB485-STISO Online
Buy USB485-STIXL Online
USB485-STI4W - 4 wire full duplex RS485 / RS422 converter.
USB485-STI4W : Isolated USB RS485/422 converter
Our 4 wire full duplex model of USB to RS485 converters.
The receiver is always enabled, but the transmitter is only
enabled during data transmission, thus making it possible to use
it even as a slave device.
Drives up to 256 nodes, 1Mbps, 2.5kV isolation voltage.
USB485-STI4W product sheet
USB485-MB45 RS485 with cable and RJ45 - for Modbus.
USB485-MB45 : Isolated RS485 converter with cable and RJ45 for Modbus
The RJ45 is wired according to the
Modbus specifications Ver 1.02 Section 3.5.1
Pin 4 : Data - (B)
Pin 5 : Data+ (A)
Pin 8 : Common
Extremely flexible shielded cable where the shield is connected to Modbus 'common' internally in the converter.
Standard cable length is 3 meter, but 1.5 / 5 / 10 meter versions will be available as well.
USB485-MB45 product sheet
Isolated panel mount converters for RS232 & RS485.
Our panel mount converters are ideal for being used in racks and industrial enclosures, to provide easy access to an internal RS232 or RS485 connection from an external USB port.
Furthermore it adds a 2.500 volt isolation barrier at the most perfect location - exactly at the border between internal and external circuits.
Powered from USB - no external power supply required.
USB232-ILP : The RS232 version
USB232-ILP product sheet
Buy USB232-ILP Online € 62 @1 / € 55 @10
USB485-ILP : The RS485 version
USB485-ILP product sheet
Buy USB485-ILP Online € 70 @1 / € 63 @10
Isolated panel mount converters for RS485.