RS422
One of several standards that incorporate balanced line signals into DB connectors. A pair of wires is used to carry each signal. The data is encoded and decoded as a differential voltage between the two lines. (www.sangoma.com)
See Also: Serial Communications, I2C, RS232, RS485
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Product
USB-485/2, 2-Port, USB, RS485/RS422 Serial Interface Device
778476-02
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The USB‑485/2 interface transforms your USB port into a single asynchronous serial port for communication with RS485 and RS422 devices. You can use a USB‑485/2 port as a standard serial port from your application, including RTS/CTS hardware handshake lines. NI serial interfaces also appear as standard COM ports for compatibility with programs that use serial communications.
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Product
GPIB-RS485/RS422 GPIB Instrument Control Device - Taiwan 110VAC
779733-11
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The GPIB‑RS485 is an IEEE 488 controller device for PCs with RS485 or RS422 ports. You can use this device to integrate an instrument into your system using GPIB. This device transforms a computer with an RS485 or RS422 serial port into a talker, listener, or controller on the GPIB bus. It can also interface RS485 and RS422 instruments and peripherals to the GPIB bus. It can implement the physical and electrical specifications of the IEEE 488, RS485, and RS422 standards, as well as interpret and execute high-level commands from the serial port, including serial‑to‑GPIB, and GPIB‑to‑serial protocol conversions. This device is IEEE 488.2 compatible. The device includes a license for the NI‑488.2 driver software, providing maximum reliability for connecting to third-party instruments with GPIB.
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Product
RS232 / RS485 / RS422 Isolators/ Isolated Converters
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From 3-wire to 7-wire RS232 isolators, 2-wire RS485 to 4-wire RS422 / RS485 isolators, and USB isolators to USB / RS232 / RS485 / RS422 optically-isolated converters, CommFront has all the industrial-grade optical-isolation devices to protect your assets from the unexpected. If off-the-shelf product does not provide enough security for you, we can even tailor-make the devices, which are customizable right down to the nuts and bolts.
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Product
USB-485/4, 4-Port, USB, RS485/RS422 Serial Interface Device
778476-14
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The USB‑485/4 interface transforms your USB port into a single asynchronous serial port for communication with RS485 and RS422 devices. You can use a USB‑485/4 port as a standard serial port from your application, including RTS/CTS hardware handshake lines. NI serial interfaces also appear as standard COM ports for compatibility with programs that use serial communications.
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Product
64 Channel Digital Input and 4 Channel RS422 Module
DP-OBC-3003
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DP-OBC-3003 is a rugged 3U cPCI based board with 64 Digital Input channels in open/ground configuration and 4 serial ports of RS422 interface. It operates on 32-bit, 33MHz PCI bus. Four RS422 channels are incorporated with opto-isolated inputs which supports baud rates upto 115.2Kbps.
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Product
PXI-8433, 2-Port, Isolated, RS485/RS422 PXI Serial Interface Module
779744-01
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2-Port, Isolated, RS485/RS422 PXI Serial Interface Module - The PXI‑8433/2 is a high-performance industrial interface for high-speed, port‑to‑port isolated communication with RS485 and RS422 devices. It features high-performance DMA transfers, multithreading, and multiprocessor support. You can also select between 4‑ and 2‑wire transceiver modes for full‑ and half‑duplex communication. NI serial interfaces also appear as standard COM ports for compatibility with programs that use serial communications.
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Product
RS232 / RS485 / RS422 To Fiber Optic Converters
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Our rugged, industrial-grade, point-to-point RS232 / RS485 / RS422 serial to fiber optic converters work in pairs to extend serial signals (RS232, RS485, RS422, and TTL) over long distance. These point-to-point RS232 / RS485 / RS422 serial to fiber optic converters have been designed for harsh industrial environments and withstand a wide temperature of -40°F to 185°F (-40°C to 85°C), and they come with the options of multi-mode (extend distance up to 3 miles / 5km) and single-mode (extend distance up to 25 miles / 40 km), and ST, SC, and FC connectors.
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Product
PXIe-8431, 8-Port, RS485/RS422 PXI Serial Interface Module
781473-01
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The PXIe‑8431/8 is a high-performance interface for high-speed communication with RS485 and RS422 devices. It features high-performance DMA transfers, multithreading, and multiprocessor support. You can also select between 4‑ and 2‑wire transceiver modes for full- and half-duplex communication. NI serial interfaces also appear as standard COM ports for compatibility with programs that use serial communications.
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Product
RS422 Mode SI-module With Optical Isolation And RTS/CTS
MX422-PEP
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RS422 mode SI-module with optical isolation and RTS/CTS
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Product
RS232 / RS485 / RS422 / TTL Serial Repeaters & Hubs
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CommFront offers a range of rugged, industrial-grade RS232 / RS485 / RS422 / TTL repeaters and hubs to meet serial communications' data distance needs by converting unbalanced signals to balanced ones, deploying repeaters to boost signal strength, and implementing hubs for star-configured connections, while still taking full advantage of cost-effective and readily-available copper wire.
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Product
RS232 / RS485 / RS422 / Serial To Multi-Drop Fiber Optic Converters
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Our advanced, rugged, industrial-grade, RS232 / RS485 / RS422 serial to multi-drop fiber optic converters are designed to cover large areas. These converters support up to 255 fiber nodes, and each fiber node can extend the RS232 / RS422 / RS485's distance to 3 miles (5km) for multi-mode converters and cables, or 25 miles (40km) for single-mode converters and cables. Depending on the site situation, these multi-drop fiber optic converters can be configured as a daisy-chain or a self-healing redundant ring fiber network. When configured as a ring fiber network, the built-in self-healing feature allows the data to be transmitted clockwise or counterclockwise; therefore, failure of any individual converter will not affect other devices located on the same fiber ring, making the entire data network more robust and reliable. These multi-drop fiber optic converters have been designed for harsh industrial environments and withstand a wide temperature of -40°F to 185°F (-40°C to 85°C), and they come with the options of multi-mode and single-mode, and ST, SC, and FC connectors.
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Product
RS232 RS485 RS422 Serial To Ethernet Modbus Converters / Device Servers
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In the past two decades, legacy serial communication protocols such as Modbus have merged rapidly with modern TCP/IP communication, yielding benefits including widely available infrastructures and greater distance, reliability, and flexibility. CommFront offers a range of industry-proven, easy-to-use serial to Ethernet converters and device servers, both hardware and software types. The applications of our serial to Ethernet converters include acting as a device server or a Modbus RTU/ASCII to Modbus TCP protocol converter; extending serial ( RS232 / RS485 / RS422 / TTL) communication distance over Ethernet network; controlling serial devices from remote Modbus TCP software or Modbus RTU master via Ethernet network; making a wide variety of M2M communication applications possible by enabling client access independent of any operating system or proprietary protocol; and converting conventional serial data network into TCP/IP network, etc.
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Product
RS232 / RS485 / RS422 / Ethernet Surge Protectors
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Our passive, rugged, industrial-grade RS232 / RS485 / RS422 / Ethernet surge protectors are designed for direct industrial DIN-rail mounting and they come with two (2) or three (3) stages of surge protection — Gas Discharge Tube (GDT), protection resistors, and Transient Voltage Suppressor (TVS) - for maximum protection. From 2-wire RS485, 4-wire RS422 / RS485, to 10 / 100 / 1000M Ethernet, CommFront's surge protectors safeguard your data lines and provide you with a peace of mind.
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Product
Dual-Port Isolated RS-422/485 Communications and Watchdog Card
WDG-2S
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This multifunction card contains a watchdog timer, two RS422/485 serial communications ports, and an internal temperature monitor and computer voltage monitor. This is a full-length card that installs in "long" expansion slots of IBM PC/XT/AT and compatible computers. The following paragraphs describe functions provided.
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Product
Single Port RS-422/485 Serial PCMCIA Card With Detachable Cable
SSP-200/300
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The Quatech SSP-200/300 offers a convenient way to add a single RS-422/485 serial port to your laptop, PDA, or desktop (using one of Elan's Desktop PCMCIA adapters - P111, P222 etc.). The card automatically configures to become another COM port using the supplied drivers that are tried, tested, and optimized for Windows.
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Product
8-Port Serial Interface, Modular, With/Without Optical Isolation, 3.3V/5V
APCI-7800-3
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8-port serial interface, RS232, RS422, RS485, 20 mA CL, modular mounting
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Product
USB-485/4, 4-Port, USB, RS485/RS422 Serial Interface Device
778476-44
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The USB‑485/4 interface transforms your USB port into a single asynchronous serial port for communication with RS485 and RS422 devices. You can use a USB‑485/4 port as a standard serial port from your application, including RTS/CTS hardware handshake lines. NI serial interfaces also appear as standard COM ports for compatibility with programs that use serial communications.
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Product
Free Serial-TCP (More Than Just A Device Server)
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In the past two decades, legacy serial communication protocols such as Modbus have merged rapidly with modern TCP/IP communication, yielding benefits including widely available infrastructures and greater distance, reliability, and speed. The Serial-TCP program (more than just a Device Server) bridges your existing Serial COM port and TCP/IP without the need for changing existing protocol. It works seamlessly and transparently, just like passive RS232 / RS485 / RS422 converters, repeaters, and hubs, while the difference is that one requires installation of cables and converters with limited distance; and the other simply makes use of the existing computers and networks with an unlimited transmission distance
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Product
USB To 2-Ch High Speed RS-422/RS-485 Port Module
EMIO-220S
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USB to 2-Ch High Speed RS-422/RS-485 port module, Full size Mini PCIe & Module type combo. MiniPCIe thru USB & USB Pin Header, FIFO buffer 4K byte transfer, 4K byte receiver. Widely temperature from -40 ~ 85 degree.
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Product
USB⇔RS-422/RS-485
SI-35USB
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SI-35USB is an USB converter, which converts USB of PC into RS-422/RS-485.
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Product
Multi-Protocol Serial Card
PCM485
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The PCM485 is a multi-protocol serial card that supports RS-422 or RS-485 communications in a single 5V PCMCIA Type II card. The PCM485 uses a crystal controlled oscillator which permits precise selection of baud rates from 50 to 115,200.
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Product
RS232 To RS485/422 Converter
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This device transparently converts RS-232 serial data to RS-485 or RS-422. It allows the creation of reliable long distance data communication systems using standard computer hardware.
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Product
CPCI ARM LPC3250 Board
MS 1513
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- 32 Bit ARM LPC3250 Processor (256KB SRAM)- 133MHz External Bus Speed and 266 MHz internal CPU Speed- 32 Bit, 33MHz CPCI Bus, 6U Form Factor- External memory ( Flash – 2 MB, RAM - 512 KB, DPRAM – 128KB)- 10/100 MBPS Ethernet Interface- USB 2.0 Host/Device Interface- 2 RS232 Serial Ports, 4 RS422 Serial Ports- M Module Interface- 6U board compatible with CPCI & PXI backplanes- High Speed Logic Device- Hot Swap Feature- Front Panel and Rear IO Interface- External Bus through Rear IO- Reception of 3Kbytes within 2ms through Ethernet- Board Dimension is 160mm x 233.35mm- Power Requirements: +3.3V, +5V and +/-12V- Board Dimension is 160mm x 233.35mm- Board has Rear IO interface- Ethernet, JTAG, RS232, USB connectors at front side- BSPs and Driver software for Windows and Linux OS
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Product
High Speed Communication Board
MS 1712
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- 12 Channel RS422 Standard Communication interface- 4 Channel Configurable Manchester Bi-Phase Signal communications- 4MBPS configurable baud rate- VIRTEX4 FPGA based design- Hardware Frame formation- Hardware Data validation with START & END frame identification and Checksum calculation for RS422 communication- 1MB DPRAM for PCI interface- Separate set of FIFO's for Transmit and Receive channel- 16 Channels data recording through CF (Compact Flash Storage - Capacity up to 8Gbyte) up to 30min @ 2Mb/sec- Online download through USB interface- Driver interface for Windows2000/XP/VISTA and LINUX OS- 6U size cPCI Board- Hot Swap facility is provided for the live Insertion and removing of the board- 12 RS422 channels in front panel interface using two 25-pin D-Type connector
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Product
Isolated RS-422/485 Communications and Watchdog Card
WDG-SIO
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This multifunction card contains a Watchdog Timer, an RS422/485 Serial Communications port, and an internal Temperature Alarm. The WDG-SIO is a full-length card that installs in “long” expansion slots of IBM PC/XT/AT and compatible computers. The following paragraphs describe functions provided by the WDG-SIO card.
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Product
HDLC RS-232 / RS-422 / RS-485 Passive Tap Module – USB Port
VERSA-TAP™
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Versa-Tap protocol analyzer offers a powerful hardware solution that features state-of-the art electronics and provides exceptional data-logging/analyzer capabilities at a fraction of the cost of the nearest competitor.
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Product
RS-422/485 Repeater
ADAM-4510
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Automatic RS-485 data flow controlSurge protection RS-485 data lineTransmission speed up to 115.2 KbpsNetworking up to 1200 meters (4000 feet)LED indicator to monitor status
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Product
Low Profile PCI Express 2-Port RS-232, RS-422, RS-485 Serial Interface
7205e
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The 7205e low-profile PCI Express serial interface provides two serial ports configurable for RS-232, RS-422 or RS-485. Each serial port utilizes a 16C950 UART with 128-byte Tx/Rx FIFOs that enables data rates to 921.6K bps for reliable high-speed communications in data-intensive applications. This high-performance UART includes 9-bit framing support and is fully software compatible with legacy 16550 applications. In addition, the 14.7456 oscillator and UART’s flexible clock prescalar supports the widest range of standard and non-standard baud rates.
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Product
- RS-232 to RS-422/RS-485 Converter
Model 285
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FEATURES: User Selectable RS-422 or RS-485; User Selectable 2 or 4 Wire RS-485; Intelligent Control Of RS-485 Transmitter And Receiver; TD & RD LED's; DTE/DCE Compatible; Data Rates Up to 64 KBPs. The Model 285 RS-232 to RS-422/RS-485 Converter is a unique interface converter that can be configured to operate in compliance with RS-485 or RS-422 equipment, and RS-232.
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Product
RS232 / RS485 / RS422 / TTL Serial Converters
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Rated to perform at temperatures between -40°F and 185°F (-40°C and 85°C), our rugged industrial-grade RS232 / RS485 / RS422 / TTL serial converters are almost indestructible. These industrial-grade serial converter products support multi-drop RS485 / RS422 networks and come with 600W surge protection, 15KV ESD protection, selectable end-of-line terminators, and optional 2500V opto-isolation circuitry, which ensure crisp data signals without interference for all types of installations.
