RS485
Serial communication line supporting 32 devices.
See Also: Serial Communications, I2C, RS232, RS422
-
Product
RS232 / RS485 / RS422 Isolators/ Isolated Converters
-
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.
-
Product
USB-485/4, 4-Port, USB, RS485/RS422 Serial Interface Device
778476-44
-
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.
-
Product
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.
-
Product
RS232 / RS485 / RS422 To Fiber Optic Converters
-
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.
-
Product
USB-485/2, 2-Port, USB, RS485/RS422 Serial Interface Device
778476-02
-
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.
-
Product
PCIe-8431, PCI Express, 2-Port, RS485/RS422 Serial Interface Device
782124-01
-
The PCIe‑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.
-
Product
RS485 Mode SI-module With Optical Isolation
MX485-G
-
RS485 mode SI-module with optical isolation
-
Product
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.
-
Product
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.
-
Product
Transducer with RS485 Interface
-
RS485 Temperature, Humidity, Atmospheric Pressure and CO2 Transducers.
-
Product
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.
-
Product
USB-485/4, 4-Port, USB, RS485/RS422 Serial Interface Device
778476-94
-
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.
-
Product
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.
-
Product
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.
-
Product
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.
-
Product
PCIe-8431, PCI Express, 16-Port, RS485/RS422 Serial Interface Device
780592-02
-
The PCIe‑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.
-
Product
12DO(Source Type) Modbus RS-485 Remote I/O
ADAM-4056SO
-
12ch source type digital outputProtocols:Modbus RTU,ASCIIWatchdog timer to recover the system5000VDC isolation protection
-
Product
High Performance Power Analyzer
AFM-8A
-
AFM-8A has Developed for AFC*(Auto Frequency Control) high performance measurement and frequency update, its update up quickeer than 100mSec. multifunction power analyzer provides high-accuracy measurement and is designed for single phase and three phase application. It includes 4 Digital inputs, 4 Relay outputs, and a RS-485 Modbus RTU Communication port. The user can choose one more communication port, and 2 Analog outputs for output expansion.It provides measure voltage and current of the 2~63 harmonic, and it shows CO2 emissions, which is suitable for power monitoring, management and analyze power quality. It has TOU (time-of-use) function and 4MB Flash memory capacity, allowing users to record data for a long time. It also has a software line adjustment function to reduce the on-site line adjustment work.It has the functions of waveform capture and recording, power record, and event record, which can be used for multifunction power analyzer.
-
Product
Natural Cooling Input 380VAC 3 Phase to Output 190-300VDC 10A-40A Rectifier Battery Charger
SD230D20ZZ
-
Zhejiang Sandi Electric Co., Ltd
SANDI “SD” series intelligent high-frequency switch power supply modules are specially developed to meet the demands of modern DC system. The charger rectifiers are designed with world leading patent technology “resonant voltage type soft switching power supply technology”. They feature high efficiency and stability, intelligent control, small size and light weight. Standard RS-485 interface, easy to connect with automation system. “Four remotes” functions, intelligent management. The products are widely used in power plant, substations and etc..
-
Product
GPIB Serial Interface
Model 4804B
-
* Provides RS-232C single-ended and RS-422/RS-485 differential serial signals. * Functions as a GPIB-to-Serial Interface (G-Mode) or as a Serial-to-GPIB Controller for a single device (S-Mode).* Over 600 Kbytes/second GPIB data transfer rate.* Transparent data transfer.* GPIB Address can be set by SCPI commands, by an external rocker switch or by a serial command.* On board voltage regulator for operation from 5 to 15 Vdc power.* Dual GPIB headers support GPIB connections with a GPIB Connector/Address Switch Assembly or with a GPIB Flat Ribbon Cable.
-
Product
PCIe-8431, PCI Express, 8-Port, RS485/RS422 Serial Interface Device
780592-01
-
The PCIe‑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.
-
Product
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.
-
Product
Flexible Data/Analog Switching System
S6025DE
-
Universal Switching Corporation
Designed for parallel switching of RS-232 data or other similar types of data, the S6025DE delivers compact solid-state switching in an expandable configuration. The unit can start as a smaller size and be expanded later to a full 60x60 array with 25 levels, perfect for switching RS-232 type data. It provides a choice or a combination of remote control including RS-232C, RS-422A, RS-485, GPIB (IEEE-488) and Ethernet (10base-T).
-
Product
Serial Parallel Interface
Model 2313
-
* Provides 128 high-power TTL I/O lines that can sink 48 mA or source 24 mA. * Easily interfaces to TTL or CMOS signals and contact closures. * User can configure the data bytes as inputs or outputs.* Transfer data as bits, bytes as data strings or transparently.* Separate headers for RS-232 and RS-485 signals. * Optional 2313 Flat Ribbon Cables mount DE-9 male or female connectors on the rear panel. * Optional Relay Driver boards with 64 or 128 Relay Drivers.
-
Product
- RS-232 to RS-422/RS-485 Converter
Model 285
-
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.
-
Product
4/8-port Asynchronous Serial Communications Modules
cPCI-3534/3538-S
-
- 32-bit CompactPCI, PICMG 2.0 Rev 2.1- Plug-and-play, IRQ & I/O address automatically assigned by PCI BIOS- 4/8 asynchronized communications ports with intelligent buffer- Three RS-232 ports and one isolated RS-422/RS-485 port with 2500 VRMS isolation voltage for cPCI-3534, and eight RS-232 ports for cPCI-3538- Surge protector in TXD/RXD signal line
-
Product
Pulse Concentrator
-
1) Total counter indexes of 12 pulse inputs with tariff and unit information, date and time information and alarm states can be displayed on the 2x12 characters LCD screen automatically with intervals of 5 seconds or manually by pressing up and down buttons,2) Enabling the backlight for 20 seconds by pressing any button to provide easy reading on the screen,3) Data communication with a PC via RS-485 output,4) Storing the contents of each pulse input with tariff information in 1-60 minutes intervals on the 2 MB permanent memory of the device with date and timeinformation,5) Preventing changes to settings by unauthorized users by defining a 4-digit user password.
-
Product
Residual Current Protection
-
Solutions to ensure the safety of people and installations against any ground currents. Available with ultra-immunized system as an essential solution to avoid financial losses due to outages caused by inadvertent trips. Specially designed to protect industrial installations in AC networks (type A), installations with both AC and DC components and DC-only installations (type B). Available with RS-485 communications (Modbus RTU) and remote control inputs/outputs.
-
Product
Converters
-
ENTES Ethernet Modbus Gateway is an Ethernet / RS-485 MODBUS network gateway which is designed to enable communication with a PC via Internet(WAN) and Intranet(LAN).
-
Product
RS232 Null-Modem Cable, DB-9 Female to DB-9 Female, 1m
182238-01
-
9-Pin Female DB-9 to 9-Pin Female DB-9 Serial Cable - The 9F-9F Serial Cable, sometimes referred to as GPIB Serial Cable, connects and controls GPIB devices using RS232 and RS485 serial ports. The 9F-9F Serial Cable is offered in different lengths.
