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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USB / RS232 / RS485 / RS422 Opto Isolators
USB has now moved from the desktop to more challenging environments, including instrumentation, point of sales, factory & building automation, etc. With our rugged, industrial-grade USB isolators and USB to RS232 / RS485 / RS422 optically-isolated converters, we ensure that your assets are well protected from unexpected events.
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RS232 / RS485 / RS422 / TTL Serial Converters
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.
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RS422 Mode SI-module With Optical Isolation
MX422-G
RS422 mode SI-module with optical isolation
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USB To RS232 / RS485 / RS422 / TTL / Serial / Ethernet Converters
With our high-quality, high-performance USB to RS232 / RS485 / RS422 / TTL serial and Ethernet converters that use only top-quality chipsets such as FTDI and Silicon Labs, USB signals are converted seamlessly into RS232, RS485, RS422, TTL, serial and Ethernet signals. Pick from our menu of industrial or commercial-grade devices confidently, knowing that you will get nothing but the best from CommFront.
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PCIe-8433, PCI Express, 2-Port, Isolated, RS485/RS422 Serial Interface Device
781745-01
The PCIe‑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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PXI-8433, 4-Port, Isolated, RS485/RS422 PXI Serial Interface Module
779539-01
4-Port, Isolated, RS485/RS422 PXI Serial Interface Module—The PXI‑8433/4 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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USB-485/4, 4-Port, USB, RS485/RS422 Serial Interface Device
778476-104
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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4-Port RS232/4-port RS422
3101
The Technobox 8-Port Async Communication adapter provides eight 16550-based UARTS, with four ports using RS232 signal levels, and four ports using RS422 signal levels. The four RS232 ports each provide the full set of data and modem control lines configured for DTE
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PCI-8433, 4-Port, PCI, Isolated, RS485/RS422 Serial Interface Device
779146-01
The PCI‑8433/4 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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RS232 / RS485 / RS422 / TTL Serial Repeaters & Hubs
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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USB-485/4, 4-Port, USB, RS485/RS422 Serial Interface Device
778476-54
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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PXI-8433, 2-Port, Isolated, RS485/RS422 PXI Serial Interface Module
779744-01
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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PXI-8431/2 , 2-Port, RS485/RS422 PXI Serial Interface Module
778984-01
2-Port, RS485/RS422 PXI Serial Interface Module - The PXI‑8431/2 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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RS232 RS485 RS422 Serial To Ethernet Modbus Converters / Device Servers
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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PXI-8431, 4-Port, RS485/RS422 PXI Serial Interface Module
778985-01
4-Port, RS485/RS422 PXI Serial Interface Module - The PXI‑8431/4 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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GPIB-RS485/RS422 GPIB Instrument Control Device - Taiwan 110VAC
779733-11
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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GPIB-RS485/RS422 GPIB Instrument Control Device
779733-02
Serial, RS485/RS422 GPIB Instrument Control Device - 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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RS-232 to RS-422/RS-485 Optically Isolated Interface Converter
Model 245
Total Isolation; Selectable RS-422 or RS-485; Selectable 2 or 4 wire RS-485; Intelligent Control of RS-485; TD & RD LED's on Each Side of Opto Barrier; Data Rates up to 128 KBPS. The Model 245 RS-232 to RS-422/RS-485 Optically Isolated Interface Converter is an optically isolated version of the Model 285.
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Dual-Port Isolated RS-422/485 Communications and Watchdog Card
WDG-2S
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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3U CPCI ARINC 429 Board
MS 1725
- Bus Interface:- 32 Bit PCI Bus with 3 U Form factor- PCI to PCI Bridge Interface- Speed of operation up to 66MHz- 8 ARINC 429 TX and 16 ARINC 429 RX channels- 4 RS422 Channels- 16 TTL I/O Channels- Message Storage Buffer- Driver interface for Windows2000/XP/VISTA and LINUX OS- Self Test future
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RS422 Mode SI-module With Optical Isolation And RTS/CTS
MX422-PEP
RS422 mode SI-module with optical isolation and RTS/CTS
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Multi-Protocol Serial Card
PCM485
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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Single Port Serial Interface
APCI-7300-3
*PCI interface to the 32-bit data bus. *Asynchronous communication adapter, 1-port serial interface*1 socket for SI modules*Modular structure through SI modules*Configurable as: RS232, RS422, RS485, with or without isolation, or 20 mA Current Loop (active, passive) with isolation*Addressing through software
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PMC-Parallel-485
The PMC compatible PMC-Parallel-485 design adds 32 [RS-485 /RS-422] differential IO lines to one slot of your carrier board. 2 additional differential pairs are available for a clock & clock enable. The signals can be used to capture data with an external reference or programmed to be references for the rest of the system.
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Enhanced Serial Interface Module for Excalibur 8000 Family of Carrier Boards, with High Baud Rate & High Throughput
M8KSerial
The M8KSerial is an enhanced serial interface module for the multiprotocol Excalibur 8000 family of carrier boards, that includes several advanced features such as a high baud rate and high throughput. This module supports up to two independent channels of serial communications, each of which can be selected as RS-485, RS-422 or RS-232. The module operates independently of the host computer, reducing the need for host intervention.The M8KSerial module is based on the Exar XR16M570 Universal Asynchronous Receiver/Transmitter (UART). The device is compatible to industry standard 16550 UARTs. Each of the M4KSerialPlus’s four channels contains a transmit FIFO capable of holding up to 16384 bytes and a receive FIFO capable of holding either 16384 receive bytes or 5460 bytes with a 32-bit Time Tag associated with each byte. These large buffers allow application code to transfer large quantities of data with a single non-blocking subroutine call. The 32-bit Time Tag on receive channels is very useful for synchronizing serial data with data from other modules on the 8000 board or on other interface boards. Each channel has a programmable baud rate of up to 10 Mbps and can be configured as RS-232, RS-422 or RS-485.The M8KSerial module is supplied with C drivers, including source code.
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LAN⇔RS-422/RS-485 Conversion
SI-65A
SI-65A is an interface converter to connect factory automation equipment and analyzers, which only have the serial communication ports for RS-422/485, to LAN.
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Mezzanine System
5033
ECM P/N 5033 provides eight channels of RS485 / RS422 I/O. The 110 ohm termination for each channel is enabled or disabled in software. Disabling termination saves power by eliminating unneeded or redundant termination. Speeds of up to 20 Mega bits per second are possible, but this design also features a 250K bits per second slower edge rate mode. The 250K bit mode is valuable when EMI is more of a concern and throughput is not important. All channels power up as inputs with the outputs disabled.
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FPGA Serial Controller Card with Front & Rear I/O
8046
The 8046 is a PMC FPGA-based RS422 serial card with front and rear I/O.
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Mission Computer Software Integration Rig
MS 1124
The HSIR is the ground test facility and it simulates various LRUs/sensors interfaced with the HAWK Mission Computer. RIG consists of Industrial computers with Simulation modules, Acquisition modules, Video generator module and video display monitors. RIG provides the simulated inputs to both the MCs from each simulated sensor/ LRU through hardwired signals, through the MIL-1553B, Arinc 429, RS-422, RS232 and Ethernet etc. The rig is capable of testing two MCs together either of which can be used as the Bus Controller (BC) or the Remote Terminal (RT). The rig provides the facility to monitor and acquire the MIL-1553B, Arinc 429, RS-422, and RS232 Ethernet bus, Analog IOs, Synchro IOs, Discrete IOs and transactions that takes place between the MCs and various sensors/units. The RIG has the capability to test individual MCs also.
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Enhanced Serial Interface Module for the Multiprotocol Excalibur 4000 Family of Carrier Boards
M4KSerialPlus
The M4KSerialPlus is an enhanced serial interface module for the multiprotocol Excalibur 4000 family of carrier boards, that includes several advanced features such as a high baud rate and high throughput. This module supports up to four independent channels of serial communications, each of which can be selected as RS-485, RS-422 or RS-232. The module operates independently of the host computer, reducing the need for host intervention.The M4KSerialPlus module is based on the Exar XR16M570 Universal Asynchronous Receiver/Transmitter (UART). The device is compatible to industry standard 16550 UARTs. Each of the M4KSerialPlus’s four channels contains a transmit FIFO capable of holding up to 16384 bytes and a receive FIFO capable of holding either 16384 receive bytes or 5460 bytes with a 32-bit Time Tag associated with each byte. These large buffers allow application code to transfer large quantities of data with a single non-blocking subroutine call. The 32-bit Time Tag on receive channels is very useful for synchronizing serial data with data from other modules on the 4000 board or on other interface boards. Each channel has a programmable baud rate of up to 10 Mbps and can be configured as RS-232, RS-422 or RS-485.The M4KSerialPlus module is supplied with C drivers, including source code.
