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Roalan Ltd is the source for professional
computer adapter products.
Serial
Comms Cards
PCI-X
3.3V (3.3 Volt)
64 bit and PCI serial 1 to 8 port serial communication adapter
cards/boards including low profile half height
Intelligent
Serial Cards
4 to 128 Port Intelligent Serial
RS232 RS422 RS485
Parallel
Printer Cards
PCI-X
3.3V (3.3 Volt)
64 bit and PCIe Express parallel printer adapter
cards/boards including low profile half height
Serial
plus Parallel Combo
PCI Express (PCIe) and PCI-X 133MHz 64bit Dual Serial RS232 and
Parallel Adapter
Gigabit
Ethernet Cards
PCI-X
3.3V (3.3 Volt)
64 bit Network Gigabit
Ethernet cards/boards. PCI-Express Gigabit adapter
Multi-Modem
Cards
PCI/PCI-X
3.3V (3.3 Volt)
64 bit Multi- Modem Adapter cards/boards
RS422
RS485 Cards
PCI/PCI-X 3.3V (3.3 Volt) 64
Bit RS422 RS485 Serial Comms cards/boards
PCI to USB
Cards
PCI to USB V2.0 Adapter cards
USB to
Serial converters
USB to Serial RS232 RS422/485 1
to 16 Port Adapters
USB to
Infra Red
USB to Infra Red (IR) Converter
USB
to PCMCIA
USB Adapter for Cardbus Wireless Modem 3G Cards
USB 3G Modem
USB to 3G Wireless Modem
ExpressCard
to Serial
ExpressCard to Serial RS232 Card
PC Card to
Serial
PCMCIA Cardbus to Serial RS232
Adapter Cards
PC Card to
Parallel
PCMCIA Cardbus to Parallel Printer and
Dongle Cards
PC Card to
Serial RS422/485
PCMCIA Cardbus to Serial RS422 RS485
Adapter Cards
ExpressCard
to Serial
PCMCIA ExpressCard to Serial RS232
ExpressCard
To PCMCIA Adapter
Converts ExpressCard slot to PCMCIA CardBus PC
Card
PCI/PCI-X
Firewire Cards
PCI
PCI-X 64 bit 3.3V (3.3 Volt) to Firewire (IEEE1394)
low profile half height adapter cards/boards,
Ethernet to
Serial
Ethernet to Serial RS232 RS422
RS485 1 to 8 Port Adapters
Serial to
Bluetooth
Bluetooth to Serial RS232 Cable
Eliminator
Wireless Network-based
Serial Device Server
Wireless LAN IEE802.1b to RS232 RS422 RS485
Serial Adapters
GSM
to Serial
Mobile Cell Phone to Serial RS232
Quatech
Products
Order Quatech products on-line
VSCom
Products
Order VScom products on-line
Synchronous
Products
PCMCIA RS232/422/485
PCI
Modem
3GWireless
Cellular Router
Compact
Flash Compact
Flash To Serial Comms RS232/422/485
CardBus
to ExpressCard PCMCIA
CardBus to ExpressCard Adapter PCI
Express SATA PCIe
SATA RAID Controller
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Wireless RS232/422/485 Servers
Wireless LAN RS232/422/485 Serial Servers
 | Controls RS232/422/485 device located virtually anywhere
(via Wireless LANW(LAN), Ethernet or Internet) |
| Secure encryption on Ethernet and Wireless LAN (WLAN) |
| Wireless LAN (WLAN) Interface IEEE 802.11b/g 54Mb/s |
| Lan interface 10BaseT/100BaseTx Ethernet |
| Driver automatically finds NetCom devices in the network |
| Configuration over Driver Panels, serial Port, Telnet, WEB
Browser, SNMP |
| Automatic mode switching between Driver and Raw Mode |
| Supports TCP/IP, UDP, Telnet, DHCP, ICMP, HTTP, SNMP
V1/2c/3, DNS |
| Supports ART (Automatic Receive Transmit control) |
| RS232/422/485 interface selectable by Switches and Software |
| 3 year warranty |
NetCom 123 WLAN
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1
Port RS232/422/485 via Wireless LAN, Ethernet or Internet |
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Secure
encryption on Ethernet and WLAN |
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WLAN
Interface IEEE 802.11b/g 54Mbps |
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DIN
RAIL mountable |
NET123 
£125.00 (About US$254)
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NetCom
423 WLAN
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4
Port RS232/422/485 via Wireless LAN, Ethernet or Internet |
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Secure
encryption on Ethernet and WLAN |
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WLAN
Interface IEEE 802.11b/g 54Mbps |
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DIN
RAIL mountable |
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NET423
£290.00 (About US$590)
NetCom 823 WLAN
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8
Port RS232/422/485 via Wireless LAN, Ethernet or Internet |
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Secure
encryption on Ethernet and WLAN |
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WLAN
Interface IEEE 802.11b/g 54Mbps |
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19"
Rackmount and DIN RAIL mountable |
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built-in
power supply |
NET823
£575.00 (About US$1169)
Coming Soon 16 Port Also
see Wireless 3G Modem
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Processor
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ARM 9 166 MHz
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I/O controller
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16C950 or compatible
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Memory
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16MB SDRAM, 2 MB Flash
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Connector type
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SMA-Reverse for WLAN antenna,
RJ45 for Ethernet,
DSUB 9 male for serial Port
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WLAN interface
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Wireless LAN IEEE 802.11b/g, max. 54 Mb/s
Encryption WPA-PSK/TKIP, WEP-128, WEP-64
Infrastructure mode (uses an Access Point)
Ad-hoc mode (direct connection to a PC/Laptop)
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Ethernet interface
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Auto-detecting 10BaseT/100BaseTx
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Protocols
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TCP/IP, UDP, Telnet, DHCP, ICMP, HTTP, LPD, SNMP
V1/2c/3, DNS
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Serial interface
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RS232/422/485 selected by software or DIP-switch
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No. of port
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1, Speed up to 1.843 Mbps
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Available Modes
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RS232 full duplex
RS422 full duplex
RS485 4 wire, full duplex
RS485 2 wire, half duplex, with echo
RS485 2 wire, half duplex, without echo
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Signals
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RS232 TxD,RxD, RTS,CTS, DTR,DSR, DCD, RI, GND
RS422 Tx+/-, Rx+/-, GND
RS485 2 wire Data+/-, GND
RS485 4 wire Tx+/-, Rx+/-, GND
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RS485 Data control
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Controlled by ART (Automatic Receive Transmit control)
or RTS
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Speed
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RS232: up to 921.6 kbps
RS422/485: up to 1.843Mbps
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Parity
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None, even, odd, space, mark
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Data bits
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5, 6, 7, 8
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Stop bits
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1, 1.5, 2
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IRQ
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None
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I/O address
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None
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Driver mode
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VScom Driver for Windows NT 4.0, 2000, XP and 2003
Driver Mode creates virtual Com port.
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TCP Raw Server
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Raw data transfer over TCP/IP. Accepts multiple
incoming connections.
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TCP Raw Client
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Raw data transfer over TCP/IP. Connects to multiple
hosts or devices waiting for incoming connections.
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TCP Advanced Settings
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Special settings for user-defined modes
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UDP Mode
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Raw data transfer by UDP. The NetCom is client and
server at the same time. Timeout functionality, maximum packet size and
a configurable trigger string define the packets of incoming data to
send over UDP
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Null Modem Tunnel
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Connecting two NetCom used as virtual null modem
cable.
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IP Modem
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The serial port emulates a standard modem. Operates by
AT-commands, and dials to IP-Addresses instead of phone numbers.
Windows "INF"-Driver provided for installation.
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Print Server
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The NetCom accepts print jobs, and spools them to the
attached serial printer. Operates as of RFC1197, similar to the line
printer daemon in Unix-systems
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Power requirements
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9 - 30V DC, 500mA @ 12V
8 Port 100 - 240V AC 47-63 Hz, 25VA
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Power supply Adapter 1 & 4 Port
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12V DC, 1A. Connected by Terminal block
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Dimension
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73×115×27 mm³
(W×L×H)
101×121×27 mm³ with DB9 connector and ears
8 Port 258×149×45 mm³ (W×L×H)
278×155×46 mm³ with DB9 connectors and DIN-RAIL ears
19" 1HU Rackmount
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Operating Temp
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0°C - 55°C
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Storage Temp
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-20°C - 85°C
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Case
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SECC sheet metal (1mm)
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Weight
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0.2kg 1 port 0.4Kg, 4 port 1.2Kg, 8 port
1.9Kg
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Installation
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Configuration utility automatically finds NetCom
devices in the network
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Operating mode
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Automatic mode switching between Driver and TCP RAW
mode.
With TCP Advanced settings it is possible to configure the NetCom for
using it in multiple modes, so it decides automatically which mode
should be used.
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Configuration
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Configuration over Driver Panels, NetCom Manager, WEB
Browser, serial console, Telnet, SNMP
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SNMP
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special VScom MIB included
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ART
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Automatic Receive Transmit control for RS485
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DNS
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Domain Name Server support
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Serial interface
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Serial Interface configurable with DIP switch and by
software
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Firewall
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Special precautions for Firewall environments
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Firmware
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Firmware update over WEB Browser, Telnet, ComPort
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LEDs
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LEDs for Power, serial Tx, Rx, Ethernet Link, Speed,
WLAN
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Password access
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Every capabilities of configuration use the same
password including SNMP V3
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Secure communication
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OpenVPN™
tunnel provides security on Ethernet and Wireless networks. The tunnel
protects the configuration as well as all serial data. It is also usable
across the Internet.
Strong encryption by AES up to 256 bit keys.
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WEP
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Encryption with 64 and 128 bit for compatibility in
simple installations
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WPA
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Modern Wireless protection by WPA-PSK/TKIP
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Hardware