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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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RS-232 to RS-422/RS-485 Converter
ND-6520
ADLINK's NuDAM data acquisition modules make up a total acquisition network and control system. Up to 256 NuDAM modules an be romotely controlled on any RS-485 network from a host computer, via a single serial RS-232, allowing communication from as far as 4000 feet from the host. Based on the RS-485 multi-drop network system, each module has a unique address ID, whereby simple ASCII command & response protocols through the standard RS-485 interface can control all the NuDAM modules in the RS-485 network. The NuDAM modules provide direct communications with a wide variety of sensors, perform all signal conditioning, scaling, linearization and conversion, and can acquire measurements of temperature, pressure, flow, voltage, current, and multiple digital signal types.
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- RS-422 to Fiber Optic Converter
Model 272A
FEATURES: Data Rate to 2.5 MBPS; Full Duplex TD and RD; ST Connectors; Extends RS-422 Network up to 2 km (6,600 ft). The Model 272A provides the capability of performing an interface conversion between full duplex, RS-422 signals and their equivalent for fiber optic transmission.
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Multifunctional I/O Module
DP-OBC-1122
DP-OBC-1122 is a standard 3U cPCI Multi-Functional IO module. This board operates on 32bit, 33MHz PCI bus. The key function of the module is to provide analog IO interface, in addition to the various communication interfaces such as ARINC429, RS422 and Rs232.It has an ADC, operating with ±10V analog input catering for 8 single ended / 4 differential ended channels and a DAC which provides 4 channels of analog signals with a maximum output voltage of ±10V .The module also features standard communication channels and general purpose IOs.
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RS232 / RS485 / RS422 / Serial To Multi-Drop Fiber Optic Converters
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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PXIe-8431/16, 16-Port, RS485/RS422 PXI Serial Interface Module
781473-02
The PXIe‑8431/16 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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RS422/RS485 Serial Boards
104-COM-8S
These are eight, four, or two-port, asynchronous, serial communication boards designed for use on the PC/104 bus. They support RS-485 and RS-422 communications. The boards may be installed in any standard PC/104 stack. Connections are made via a 50 pin IDC type right angle connector.Common applications include POS, gaming systems, machine monitoring, military and high-density networking.
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4-Port Serial Interface, Modular, With/Without Optical Isolation, 3.3V
CPCI-7500
*This Model has a 37-pin D-Sub male connector*RS232, RS422, RS485, 20 mA Current Loop*Modular structure through SI modules*With or without optical isolation*Mode configuration free for each port*128-byte FIFO-buffer, common interrupt*Transfer rate programmable up to 115,200 Baud*Option: up to 1 MBaud for RS485 and RS422*Automatic direction recognition for RS48*Mode: configurable RS232, RS422, RS485, 20 mA Current Loop (active, passive) with or without isolation (SI modules)*Transmission mode asynchronous, full, half duplex*Transfer rate: progr. up to 115.2 kBaud up to 1 MBaud on request*Protocol: 5, 6, 7 or 8-bit character 1, 1? or 2 stop bits*Parity: even, odd, none, mark or space*Interrupt lines: automatic through BIOS
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- RS-422 and RS-485 Lightning/Surge Protector
Model 22NX
FEATURES: Triple Stage Protection; Fast Response Time For RS-422 / RS-485; Prevents Damage to Modems, Converters, and Terminals; Accommodates Data Rates to 10 MBPS; Supports 4 Circuits. The Model 22NX Lightning Sponge is designed to accommodate high-voltage transients, slow them down and redirect them to a low impedance path to earth ground.
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IP-Parallel-IO
IP Compatible card with 48 programmable TTL IO or 24 - RS422 / RS485 compatible differential pairs. 5 mixed combinations available. Filtered or direct input. Programmable interrupt from each IO [TTL or differential]. 2 counter timers. Waveform generator.
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- RS-422/485 DIN Rail Mounted Lightning/Surge Protector
Model 8022NX
FEATURES: Fast Response; Automatic Recovery; Up To 20 MBPS Data Rate; DIN Rail Mounted; Full Duplex; Triple Stage Protection. The Model 8022NX is a DIN Rail mounted surge suppressor for 4-wire RS-422 or RS-485 circuits used to protect factory data networks, or, any network that wants to avail itself of the DIN Rail packaging concept. The Model 8022NX provides common-mode (line to ground) surge protection and differential mode (line to line) protection for balanced networks. All the inputs, outputs and ground connections are via screw terminals located on the top surface of the device.
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CPCI Integrated Communication Card
MS 3635I
CPCI Integrated Communication Card is high end Microprocessor based Mixed RS422 Communication and Differential Input & output Board. It is suitable for high speed Data Acquisition, Simulation, ATE applications. This board have Synchronous RS422 Communication Interface, Asynchronous RS422 Communication Interface, RS232, Ethernet interface and external bus interface. Board is well suitable for special type data acquisition & processing application. Board has high end FPGA which is used for automatic storage and very useful high speed data acquisition. Board is based on CPCI architecture and can be used with CPCI or PXI backplane.
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Compact Protocol Analyzer
LE-1500R
"LE-1500R" is a protocol analyzer (line monitor) dedicated for asynchronous communication monitoring with affordable pricing. LE-1500R can run as a stand- alone by the internal battery for long time and can be remotely controled by a PC or a smart phone via Wi-Fi (Wi-Fi function is available only in USA, Canada, Japan, and EU). The analyzer has a TTL measurement port (which supports UART communication) as its standard port besides RS-232C, RS-422, and RS-485. It can monitor communication data of max 500Kbps for up to 32MB (8,000,000 data) in real time and also can execute a simulation testing of send/receive data. It also has a BERT function (which is not equipped with the analyzers of this pricing level) as its standard function. The correct time stamp, the measurement of idel time (which are the difficult for other software analyzers), and the capturing ability (without missing data) are the best options for trouble shooting and development test of a communication sytem which requires a reliablity.
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PCI-104 8-Port, 4-port, And 2-port Multi-Protocol RS-232, RS-422, RS-485 Serial Communication Boards
104i-COM-8SM Family
The 104i-COM-8SM (PCI-104) family of multi-port, multi-protocol (RS-232, RS-422, RS-485), serial communication boards deliver up to eight high-speed serial communication ports for use in a wide variety of applications. The boards were developed for use by system integrators and manufacturers in the design of industrial and commercial systems. Based on the XR17D158, the boards have eight enhanced 16550 UARTs, each with a set of modem signals (CTS, RTS, RI, DTR, DSR, CD) in RS-232 mode. Each UART has both a 64 byte transmit and a 64 byte receive FIFO. Ports are accessed via two 40-pin IDC type right angle header connectors. 2 and 4-port versions are available, as well as RS-232 only models.
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RS232 To RS485/422 Converter
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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PCI Express 4-Port
7404e
The 7404e PCI Express serial interface provides four multifunction serial ports, each individually field-configurable for RS-232, RS-422, or RS-485. Each serial port utilizes a 16C954 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 register compatible with legacy 16550 software applications. In addition, the board derives a 62.5 MHz clock from the PCI Express link. This ultra-high-speed clock is divided by a flexible 8-bit clock prescalar with 1/8 steps to provide support for the widest range of standard and non-standard baud rates.
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Data Matrix Switches
Data Matrix Switches from novotronik are used whenever it is necessary to route balanced or unbalanced data signals, analogue or digital. Blocking and non-blocking solutions for signal types like RS-422, ECL, LVDS, TTL and others are available. In addition to our standardized devices, we also know to convince in the realization of your individual requirements.
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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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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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Serial Data Converters
CONV232/485 and CONV232/422
CONV232/485 and CONV232/422 convert between RS-232 communications (as used by the COM1 and COM2 ports standard on most motherboards) and balanced-mode, long distance RS-485 and RS-422 communications. CONV232/485 was designed for use with our REMOTE ACCES line when there is no RS-485 port on your PC, but may also be used in other, similar applications.
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Serial Communication Products
Many types of external computer equipment have a serial ports to communicate with host PCs. ACCES I/O has Communication Cards for all of the popular protocols you may find on this type of equipment (RS-232, RS-422 and RS-485), ranging from a single port to eight ports on a single card. There are also optically isolated versions of some of these cards to ensure effective data transmission on long communication lines, even in electrically noisy environments. Having optical isolation is like having data insurance.
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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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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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RS-422/RS-485 Repeater
ND-6510
ADLINK's NuDAM data acquisition modules make up a total acquisition network and control system. Up to 256 NuDAM modules an be romotely controlled on any RS-485 network from a host computer, via a single serial RS-232, allowing communication from as far as 4000 feet from the host. Based on the RS-485 multi-drop network system, each module has a unique address ID, whereby simple ASCII command & response protocols through the standard RS-485 interface can control all the NuDAM modules in the RS-485 network. The NuDAM modules provide direct communications with a wide variety of sensors, perform all signal conditioning, scaling, linearization and conversion, and can acquire measurements of temperature, pressure, flow, voltage, current, and multiple digital signal types.
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µModule Isolated Transceivers
Analog Devices µModule (micromodule) isolated transceivers provide robust galvanic isolation for digital serial communication interfaces, including SPI, I2C, RS-485/RS-422, RS-232, and USB. Isolation barriers are implemented using Ethernet transformers, coupling capacitors, or embedded inductors. All devices are simple to configure, have very low EMI susceptibility and emissions, and feature high noise immunity to preserve signal integrity.
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Multiport Serial Adapter, PCIe X4
PCI325
The PCI325 is an RS-422 synchronous/asynchronous multiport serial adapter. The module can accept a clock input to synchronize the baud rate generators of each port to an external clock. All the protocol management overhead is taken care of in the hardware so that the host CPU is offloaded from managing the detailed serial protocol. An I/O breakout box may be connected to the high-density connectors of the PCI325 to provide multiple DB25, DB9, or other serial connectors for easy integration to your system or an octopus-style breakout cable may be used. The I/O breakout box may include many different status LEDs which can be tailored to your protocol/application. The PCI325 provides the breakout box with power so that it does not require any additional power cabling
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PCI Express 2-Port
7203e
The 7203e PCI Express serial interface provides two optically isolated serial ports, each individually configurable for RS-232, RS-422, or RS-485. Each serial port utilizes a 16C952 UART with 128-byte Tx/Rx FIFOs that enables data rates to 460.8K bps for reliable high-speed communications in data-intensive applications. This high-performance UART includes 9-bit framing support and is register compatible with legacy 16550 software applications. In addition, the board derives a 62.5 MHz clock from the PCI Express link. This ultra-high-speed clock is divided by a flexible 8-bit clock prescalar with 1/8 steps to provide support for the widest range of standard and non-standard baud rates.
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4-Port Serial Interface
APCI-7500-3
This Model has a 37-pin D-Sub male connectorRS232, RS422, RS485, 20 mA Current LoopModular structure through SI modulesWith or without optical isolationMode configuration free for each port128-byte FIFO-buffer, common interruptTransfer rate programmable up to 115,200 BaudOption: up to 1 MBaud for RS485 and RS422Automatic direction recognition for RS48Mode: configurable RS232, RS422, RS485, 20 mA Current Loop (active, passive) with or without isolation (SI modules)Transmission mode asynchronous, full, half duplexTransfer rate: progr. up to 115.2 kBaud up to 1 MBaud on requestProtocol: 5, 6, 7 or 8-bit character 1, 1? or 2 stop bitsParity: even, odd, none, mark or spaceInterrupt lines: automatic through BIOS
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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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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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RS-485 and RS-422 Transceivers
The RS-485 specification meets the requirements for a truly multipoint communications network, and the standard specifies up to 32 drivers and 32 receivers on a single (2-wire) bus. Some RS-485 transceivers modify the input impedance to allow up to 8× more nodes to be connected to the same bus. Analog Devices offers a wide range of standard RS-485/RS-422 transceivers and iCoupler® isolated RS-485/RS-422 transceivers to suit many applications.
