RS485
Serial communication line supporting 32 devices.
See Also: Serial Communications, I2C, RS232, RS422
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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
RS485 Remote Display Indicator
CS1-8
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CS1-8 has been designed for remote display by RS485 (Modbus RTU Mode) interface.
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Product
IRIG-B TTL TO RS485 Converter
SPC - INS - 1010
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Signals & Systems India Private Limited
The IRIG-B TTL signal is a time synchronization protocol that can be transmitted up to 50m maximum using coaxial cable. So the relay which is to be received the IRIG-B TTL signal may be far away from the IRIG-B source. The relay may be not able to synchronize with the GPS. To avoid such an incident in the field, some of the relays have provision to receive IRIG-B RS485 signal. The IRIG-B RS485 signal can able travel up to 1200m without any booster. All Time source equipment may not be supplied with IRIG-B RS485 signal output. The converter will act as a bridge between GPS Time source and Relays for time synchronization.
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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
PCIe-8433, PCI Express, 2-Port, Isolated, RS485/RS422 Serial Interface Device
781745-01
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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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Product
USB / RS232 / RS485 / RS422 Opto Isolators
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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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Product
PCIe-8431, PCI Express, 16-Port, RS485/RS422 Serial Interface Device
780592-02
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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.
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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
RS485 Null-Modem Cable, DB-9 Female to DB-9 Female, 4m
183283-04
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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.
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Product
RS485 Mode SI-module With Optical Isolation
MX485-G
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RS485 mode SI-module with optical isolation
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Product
PXI-8433, 4-Port, Isolated, RS485/RS422 PXI Serial Interface Module
779539-01
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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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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
PXI-8431/2 , 2-Port, RS485/RS422 PXI Serial Interface Module
778984-01
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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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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
PXI-8431, 4-Port, RS485/RS422 PXI Serial Interface Module
778985-01
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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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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
GPIB-RS485/RS422 GPIB Instrument Control Device
779733-02
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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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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
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
USB-485/4, 4-Port, USB, RS485/RS422 Serial Interface Device
778476-104
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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
RS-232/RS-485 Converter
ECD485
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Deploy sub-metering sites and simple metering networks with ease using the EDMI MiniHub RS-232 to RS-485 converter.1/4 Load RS-485 modules allow for up to 128 devices over 1.2km of wired daisy-chain network, with each meter capable of becoming the Network Master and remotely connecting to a backhaul system via an integrated EDMI Modem Port redirect connector.
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Product
Digital Panel Meter
MW(Q)-5A
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Mx-5A meter to provide power (Watt or Active Power or Re-active Power or Power Factor), high-precision measurement, display and remote communication capabilities.Additional purchase: 1 group of relay outputs, 1 analog output, an RS485 communication output (the Modbus RTU Mode) interface, so that can be installed in power management, remote input and output, alarm and variety of remote communication control the use of needs.120mm (D) is ideal for assembling in panels with limited penetration depth.
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Product
4-Port Serial Interface
APCI-7500-3
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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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Product
8DI/8DO RS-485 Remote I/O
ADAM-4050
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8ch digital input/8ch digital outputProtocols: Modbus RTU,ASCIIWatchdog timer to recover the system
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Product
PMC-Parallel-485
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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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Product
Multifunctional Meter
CPM-20
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CPM-20 multifunction power meter provide high accuracy single phase and three-phase measuring and displaying, energy accumulating, power quality analysis, and data communication.It provides maximum/minimum records for power usage and power demand parameters.Hardware standard built in a RS485 Modbus communication port.FCC and CE Approved
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Product
RS-232 to RS-422/RS-485 Converter
ND-6520
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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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Product
AC Voltage Tester
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AllWin Instrument Science and Technology Co., Ltd.
1. AC voltage tester2. TFT LCD3. PLC,RS232C,RS485 interface4. MCU control technology
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Product
Digital Ethernet Power Meters
FU2200A
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Beijing GFUVE Electronics Co.,Ltd.
Digital Ethernet power meter with data logger is a three-phase multifunction power and energy meter manufactured by GFUVE. It provides excellent value for monitoring power and energy management systems. It may be used as data gathering devices for intelligent power distribution or plant automation systems. All monitored data is available via a standard digital RS485 communication port, which is based on the Modbus RTU protocol.
