RS-485
Serial communication line supporting 32 devices.
See Also: Serial, I2C, LIN, Can bus, ExpressCard, Fieldbus, FireWire, RS-232, PCI Express, Serial ATA, Serial Peripheral Interface, SMBus
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Product
RS-485 and RS-422 Transceivers
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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.
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Product
16DI RS-485 Remote I/O
ADAM-4053
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16ch digital inputProtocols: Modbus RTU,ASCIIWatchdog timer to recover the system
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Product
2Counter/2DO Modbus RS-485 Remote I/O
ADAM-4080
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2ch counter/2ch digital outputProtocols:Modbus RTU,ASCIIWatchdog timer to recover the system2500VRMS isolation protectionCounter frequency up to 50kHZ
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Product
LAN⇔RS-422/RS-485 Conversion
SI-65A
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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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Product
LAN⇔RS-422/RS-485 Converter (Insulated, Wall-hanging Model)
SI-65FA-L
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SI-65FA-L is an interface converter to connect equipments such as equipment for factory automation or analyzers which have RS-422/485 communication ports to LAN.
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Product
8AI Modbus RS-485 Remote I/O
ND-6117
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The NuDAM modules provide direct communications with a wide variety of sensors; perform signal conditioning, scaling, linearization and conversion; can acquire measurements of temperature, pressure, flow, voltage, current; and handle multiple digital signal types broadly used in IoT and other industrial applications, such as facility monitoring, environment monitoring, and industrial process control. The new ND-6117, ND-6124, ND-6150, and ND-6160 modules feature Modbus/RTU as the best remote data transmission protocol, which provides customers a comprehensive product offering.
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Product
8DI/8DO Modbus RS-485 Remote I/O
ADAM-4055
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8ch digital input/8ch digital outputProtocols:Modbus RTU,ASCIIWatchdog timer to recover the system2500VDC isolation protection
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Product
8Thermocouple Modbus RS-485 Remote I/O
ADAM-4018+
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8ch thermocouple(can be set to current)Protocols:Modbus RTU,ASCIIWatchdog timer to recover the system3000VDC isolation protectionWiring burned-out detection function
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Product
USB to RS-422/RS-485 Converter
ND-6530
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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
2.4/5GHz Wi-Fi I/O Module With 6DI/2DO/RS-485
WISE-4250-S250
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Equipped with 6 digital inputs and 2 digital outputs and 1 RS-485 in a compact, high-density I/O designSupports both dry and wet contact input modes for broad sensor compatibilityFail Safe Value (FSV) ensures outputs default to a safe state during communication lossSupports IEEE 802.11ac (2.4GHz/5GHz) for stable and high-speed wireless connectivityEnsures secure data transmission with WPA3/TLS 1.3 encryption and X.509 certificate authenticationStores 10,000+ data points locally with SNTP/RTC time sync and Watchdog timer auto connection recoveryOffers comprehensive protocol support, including MQTT, Modbus/TCP, SNTP, TCP/IP, HTTPS, RESTful, UDP, and DHCP
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Product
RS-422/RS-485 Repeater
ND-6510
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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
8Thermocouple Robust Modbus RS-485 Remote I/O
ADAM-4118
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8ch thermocouple(can be set to voltage or current)Operation temperature:-40~85°C,Power input:10VDC~48VDCNoise protection: 4kV surge(power),4kV EFT,8 kV ESD protectionInterface: RS-485/USB3000VDC isolation protectionLED indicator to monitor I/O status
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Product
RS-485, RS-422 & RS-232
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Renesas has a rich interface history dating back to the 1970s. Our RS-485, RS-422 and RS-232 transceivers are used by the biggest names in industrial process control, telecommunications, and hundreds of different applications.
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Product
8AI Modbus RS-485 Remote I/O
ADAM-4017+
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8ch analog input(current or voltage)Protocols:Modbus RTU,ASCIIWatchdog timer to recover the system3000VDC isolation protection
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Product
- RS-422 and RS-485 Lightning/Surge Protector
Model 22NX
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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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Product
1AO RS-485 Modbus Remote I/O
ADAM-4021
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1ch analog outputProtocols:ASCII / ModbusWatchdog timer to recover the system3000VDC isolation protection
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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
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
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
Isolated RS-485
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Renesas' isolated RS-485 differential bus transceivers provide bidirectional data communication for Industrial Internet of Things (IIoT) networks.
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Product
Interface RS-485 and RS-422
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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.
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Product
Isolated RS-232 To RS-422/485 Converter
ADAM-4520
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Automatic RS-485 data flow control3000 VDC isolation protectionSurge protection RS-485 data lineTransmission speed up to 115.2 KbpsLED indicator to monitor status
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Product
8AI Robust Modbus RS-485 Remote I/O
ADAM-4117
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8ch analog input(voltage or current)Operation temperature:-40~85°C,Power input:10VDC~48VDCNoise protection: 4kV surge(power),4kV EFT,8 kV ESD protectionInterface: RS-485/USB3000VDC isolation protectionLED indicator to monitor I/O status
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Product
Isolated RS-485
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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. 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.
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Product
8Power Relay Modbus RS-485 Remote I/O
ADAM-4069
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8ch power relayProtocols:Modbus RTU,ASCIIWatchdog timer to recover the system
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Product
RS-485/RS-422 Fault Protected
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Renesas' fault protected RS-485/RS-422 transceivers, also known as overvoltage protected transceivers (OVP), offer robust fault tolerance and high performance.
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Product
RS-485 Serial I/O
ADAM-4000/4100 Series
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The ADAM-4000/ 4100 series featuring rugged industrial-grade cases are specially designed for reliable operation in harsh environments. Built-in microprocessors independently provide intelligent signal conditioning, analog I/O, digital I/O, data display, and RS-485 communication through Modbus RTU protocols.
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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
4-Slot Distributed DA&C System For RS-485
ADAM-5000/485
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RS-485 communication for easy installation and networking4 slots for up to 64 points data monitoring card control in one moduleSupports ADAM ASCII protocol or Modbus®/RTU protocolSupports Modbus/RTU protocol with user-defined Modbus addressExtensive software support, includes windows DLL drivers, OCX drivers, OPC server and popular HMI/SCADA software driversSeamlessly integrated with easy-to-use ADAMView data acquisition software
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Product
SparkFun USB To RS-485 Converter
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This is the newest revision of this board and this breakout board pairs an SP3485 RS-485 transceiver with an FT232RL USB UART IC to convert a USB stream to RS-485. The SP3485 is a half-duplex transceiver, so it can only communicate one way at a time, but it can reach transmission speeds of up to 10Mbps.





























