Modbus
communications protocol for sharing data between controllers.
See Also: Communication Protocol, Near Field Communications, Data Communications, Modbus RTU
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Product
12DI/2Counter/2DO IoT Modbus/SNMP/MQTT Ethernet Remote I/O
ADAM-6051
Isolated Digital I/O Module
12ch digital input/2ch counter/2ch digital output(pulse output)Protocols:MQTT(TLS),SNMP,Modbus TCP,RESTful API,ASCIIGCL to perform basic logic control rulesPeer-to-Peer function to map I/O statusCloud access: Data update to AzureBuilt-in web serverWatchdog timer to recover the system
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Product
4AO/4DI IoT Modbus/SNMP/MQTT 2-Ports Ethernet Remote I/O
ADAM-6224
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4ch analog output/4ch digital inputProtocols:MQTT(TLS),SNMP,Modbus TCP,RESTful,ASCIIGCL to perform basic logic control rulesCloud access: Data update to AzureAuto-bypass function to ensure daisy-chain data transmissionPeer-to-Peer function to map I/O statusBuilt-in web serverWatchdog timer to recover the system
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Product
8Relay(PhotoMOS)/14DI/6DO IoT Modbus/OPC UA Ethernet Remote I/O
ADAM-6360D
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OPC UA empowers Modbus I/O users to access the industrial IoT world.OPC UA I/O links SCADA and the cloud without the need for gateways, accelerating OT and IT convergence.Hardware and software double security levels to prevent being hacked.Cost-effective: high I/O density and daisy-chaining solution saves cost.
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Product
Zero Air System
Model T701
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Teledyne Advanced Pollution Instrumentation
The T701 adds Modbus TCP/IP connectivity to the proven reliability and performance of our zero air systems. This allows remote monitoring of key instrument functions including dewpoint status, scrubber temperature, box temperature, and output pressure. Additionally, this digital access provides the ability to remotely disable the internal pump, allowing longer service intervals and less power consumption. The user can also remotely start instrument warm-up prior to arrival at the site.The T701 is a fully self-contained source of clean, dry air for dilution calibrators. It can also be used to create purge air for permeation tube ovens or burner air for FID analyzers. The T701 includes a dewpoint sensor, an oil and diaphragm-free pump, and scrubbers to remove SO2, NO, NO2, O3, H2S, and NH3. Optional high performance scrubbers are available to remove CO and Hydrocarbons.
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Product
PROFINET Gateways
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The PROFINET Fieldbus gateways provide seamless communication between Modbus RTU/TCP and PROFINET communication protocols.
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Product
Smart Meters
EVA-P200 Series
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EVA-P series are compact, cost-effective power meters with high accuracy, Modbus RTU, and flexible wiring—ideal for monitoring and maintenance.
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Product
Fieldbus Gateway
EKI-1242IEIMS
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Modbus RTU/TCP to 3-in-1 EtherNet/IP or PROFINET or OPC UA Protocol Gateway, Wide Temperature. Seamless integrate Modbus RTU/TCP and EtherNet/IP or PROFINET or OPC UA communication. Built-in real time diagnostic to increase high efficiency of device management.
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Product
Voltage/Current Indicator
CS3-VA
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CS3-VA Voltage/Current Indicator has been designed in miniature size(24 x 48mm), and provide high accuracy measurement, display and communication of 0~300V or 0~20mA for DC/AC(average).They are also to build 2 Relay outputs, 1 External Control Input, 1 Analogue output or 1 RS485(Modbus RTU Mode) interface with versatile functions such as control, alarm, re-transmission or communication.
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Product
Networked Absolute Inclinometer
T7
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The T7 is available in several interface and protocol options. The physical interface can be RS232, RS485 or US Digital's CAN (Controller Area Network). The protocol can be either US Digital's serial protocol or Modbus RTU. The RS232 version supports a single T7 with up to 100 ft of cable. For users that need longer cable lengths or multiple T7s on a single bus, the RS485 or US Digital CAN (Controller Area Network) version can be used. The USD-CAN protocol allows a network of up to sixty-four T7s to be connected to a single host. Power for each T7 is supplied over the CAN network cable. The host accesses the USD-CAN T7s through US Digital's low cost CANA-232/CANA-485 adapter module. This module allows the host to access each T7 on the network using simple, easy serial port commands, just like the RS232 version. The RS485 version supports up to 32 T7s on the bus.
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Product
Economic Type Resistance Indicator
CS1-RS
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CS1-RS economic type Resistance Indicator has been designed with high accuracy measurement, display and communication of Ohm(2 wire) as like as Coil of motor or transformer.The meter supports Field Calibration function. It can be calibrated with sensor (Resistance) to meet machinery structure.They are also available 1 option of 1 Relay outputs, 1 Analogue output or 1 RS485 (Modbus RTU Mode) interface with versatile functions such as control, alarm, re-transmission or communication for a wide range of machinery and testing equipments applications.
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Product
Process Indicator
CS1-PR
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CS1-PR economic type Process Indicator has been designed with high accuracy measurement, display and communication of DC signal 0~10V and 4(0)~20mA.They are also available 1 option of 1 Relay outputs, 1 Analogue output or 1 RS485(Modbus RTU Mode) interface with versatile functions such as control, alarm, re-transmission or communication for a wide range of industrial applications.
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Product
4 2/3 Digital Temperature (RTD) Meter (1/32 DIN)
CS3-TR
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CS3-TR Temperature Indicator has been designed with Pt100 (3 wire) high accuracy measurement.A compact body design for small equipment, laboratory instrument, and others.Also are available with relay output, analog output, RS485 Modbus RTU communication to cover a wide range of applications.
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Product
4 2/3 Digits Voltage/Current Meter
CS2-VA
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CS2-VA Voltage/Current Meter is designed with high accuracy measurement, display and communication of 0~600V or 0~10A for DC/AC/TMRS.● ADTEK builds flexible function as like as 3 bank (for multi-range scaling and set point) and 3 external control inputs meet to various testing equipment inquiry.They are also build in 4 Relay outputs, 3 External Control Inputs, 1 Analogue output and 1 RS485 (Modbus RTU Mode) interface with versatile functions such as control, alarm, re-transmission and communication for a wide range of industrial applications.
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Product
Modbus Data Logger
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Mod Bus is a popular protocol that is used by manufacturers of instruments and sensors. Site instrumentation already exists and parameters to be recorded are available on Mod bus. We have in store fro our clients Mod bus Data Logger that can read data from these instruments and record them periodically. These loggers are configured as per the site requirements.
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Product
Modbus-RTU I/O Modules
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Sophisticated watchdog timer functions allow the application to define the module's failsafe output state. The watchdog timer invokes the failsafe condition when communication between the host and module exceed a duration specified by the application. For further security, a second hardware watchdog timer monitors the microcontroller for failed operations or a "lock-up" condition and automaticaly resets the unit.
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Product
8DI/8DO Modbus RTU Remote I/O
ND-6150
Data Acquisition Module
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
TET Modules
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The tET Series tiny Modbus TCP based I/O modules provide digital I/O functions, support I/O pairing and have a din rail mount. The module can be remotely controlled through a 10/100 M Ethernet network by using Modbus TCP/UDP protocol. They are configurable through a standard web browser and are easy to use. The tET Series can be used with our FREE EZ Data Logger Software.
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Product
CAS Modbus Scanner
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CAS Modbus Scanner is a utility to retrieve coils, inputs, holding registers, and input registers from a Modbus enabled device. Values retrieved from the device can be viewed in many different formats including Binary, HEX, Uint16, Int16, Uint32, Int32, and Float32. This utility can also discover Modbus devices on your network if you do not know their address. It works by testing every address, function, length, offset to check for exceptions or responses.
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Product
8FE+2G Combo Managed Ethernet Switch Support Modbus/TCP, -40~75℃
EKI-5629CI-MB
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8 Fast Ethernet ports + 2 Gigabit Copper/SFP combo ports (EKI-5629C/CI-MB)Entry-Level Managed SwitchIXM function enables fast deploymentManagement: SNMP v1/v2c/v3, WEB, Standard MIB, Private MIB
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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
PoE Modbus TCP Based Dual Ethernet Port I/O Modules
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The PET-7200 Series are communicable over Modbus TCP, can be Powered over Ethernet (PoE) and have 2 Ethernet ports for daisy chain configuration. The built-in two-port Ethernet switch is to implement daisy-chain topology. The cabling is much easier and total costs of cable and switch are significantly reduced. They are configurable over a built-in web server and have a Web HMI.
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Product
RTD Temperature Indicator
CM2-TR
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CM2-TR RTD Temperature Indicator has been designed in simple operation and 4 digital 20mm LED display with economic cost.They are can be programmed by buttons that are hidden in front panel.They are also available to option relay output and an analog output or RS485 (Modbus RTU Mode) communication.
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Product
16DO IoT Modbus/SNMP/MQTT 2-Ports Ethernet Remote I/O
ADAM-6256
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16ch digital output(pulse output)Protocols:MQTT(TLS),SNMP,Modbus TCP,RESTful,ASCIIGCL to perform basic logic control rulesCloud access: Data update to AzureAuto-bypass function to ensure daisy-chain data transmissionPeer-to-Peer function to map I/O statusBuilt-in web serverWatchdog timer to recover the system
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Product
4AO/4DI Modbus RTU Remote I/O
ND-6124
Data Acquisition Module
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
6 Digit Weighing Controller
A6-SG
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A6-SG weighing controller has been designed with high accuracy measurement (24bit A/D), 6 digital display, flexible I/O functions and communication port for general weighing application.They are also build in 4 Relay outputs, 4 External Control Inputs, 1 Analogue output and 1 RS485 (Modbus RTU Mode) interface with versatile functions such as control, alarm, re-transmission and communication for a wide range of industrial applications.They was designed the tracking zero and tracking stable function in programming level. According to the system, user can set the function to get the suitable reading.According the purpose, the 4 relays can be selected individual for feeder, discharge, peak, or alarm in 7 control modes.
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Product
16FE Managed Ethernet Switch Support Modbus/TCP, -40~75℃
EKI-5526I-MB
Ethernet Switch Module
16 ports Fast Ethernet RJ-45 (EKI-5526/I-MB)Entry-Level Managed SwitchIXM function enables fast deploymentManagement: SNMP v1/v2c/v3, WEB, Standard MIB, Private MIB
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Product
8DI/7DO IoT Modbus/SNMP/MQTT 2-Ports Ethernet Remote I/O
ADAM-6250
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8ch digital input(counter)/7ch digital output(pulse output)Protocols:MQTT(TLS),SNMP,Modbus TCP,RESTful,ASCIIGCL to perform basic logic control rulesCloud access: Data update to AzureAuto-bypass function to ensure daisy-chain data transmissionPeer-to-Peer function to map I/O statusBuilt-in web serverWatchdog timer to recover the system
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Product
6-Pwer Relay/6DI IoT Modbus/SNMP/MQTT Ethernet Remote I/O
ADAM-6066
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I/O:6ch relay/6ch digital input(counter)Protocols:MQTT(TLS),SNMP,Modbus TCP,RESTful API,ASCIIGCL to perform basic logic control rulesPeer-to-Peer function to map I/O statusCloud access: Data update to AzureBuilt-in web serverWatchdog timer to recover the system
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Product
Wiring Boxes
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Radio receiver for heating / cooling systems equipped with an integrated antenna, an output with SPDT relay and an RS485 Modbus® RTU slave communication port.
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Product
Open Master/Slave Application Protoco
Modbus TCP
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Modbus-TCP means that the Modbus protocol is used on top of Ethernet-TCP/IP. Modbus-TCP is an open Industrial Ethernet network which has been specified by the Modbus-IDA User Organization in co-operation with the Internet Engeneering Task Force (IETF) as an RFC Internet standard.





























