Modbus
communications protocol for sharing data between controllers.
See Also: Communication Protocol, Near Field Communications, Data Communications, Modbus RTU
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Product
Gas Monitors with X3® Technology
Ultima® X
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The Ultima X Series Gas Monitors with X3 Technology bring the power of multi-sensing, signal boost and ModBus output to the Ultima X line of MSA gas monitors. The units are crafted from either stainless steel or NEMA 4X-rated plastic, and our patented SafeSwap sensor disconnect-underpower feature allows all sensors to be replaced in hazardous areas without area declassification.
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Product
6 Relay/18DI/6DO IoT Modbus/OPC UA Ethernet Remote I/O
ADAM-6366
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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 save cost.
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Product
Multifunction Counter (Pulse Input)
CM1-CT
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CM1-CT multifunction counter(position) display controller, is design to have 2 pulse input, for proximity switch, photoelectric sensor, encoder etc.. Counting increase or decrease, positioning batch count etc.. display, with External input and Modbus communication port.Multiple types of input mode, trip mode setting to fulfil easy usage and requirement for counter controller. For different requirement, the meter can be with 2 relay or 1 Analogue output or 1 RS485(Modbus RTD mode) communication. (Choose 1 kind of output from the 3 options)
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Product
Energy Analyser
Duca-LCD96
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Energy Analyser for front-panel mounting 96x96, for Single-Phase/Three-Phase systems with 5-lines wide LCD screen, Co-generation Energy measurement and "Wide Range" Power Supply (24 - 240 Vac/dc). Optional RS485 serial line interface, Modbus, Profibus, Ethernet, Analog interface 4-20mA, pulse readings.
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Product
Digital Panel Meter
MPF-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
High Performance Power Analyzer
AFM-8A
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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.
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Product
4AO/4DI Modbus RTU Remote I/O
ND-6124
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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
Soil Moisture Sensor
Modbus RS485
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This is a contact-less capacitive soil moisture sensor, a continuation of my I2C soil moisture sensor. This particular version of the sensor is suited for more professional installations where long cable runs is a requirement. It adds a local voltage regulator to mitigate the voltage drop and RS485 transceiver to accommodate long wires, also reverse polarity and an additional ESD protection level is added.
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Product
16 DI/O IP67 Machine Mount M12 PROFINET/Modbus IoT Ethernet Remote I/O
ADAM-250PN
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16-ch configurable DIO and 2-port power/ethernet daisy chainIEC 61131-2 type 3 sink DI and fast response source DOSupport I/O and power diagnostic and DO safety value protection functionsPrintable marking label & LED indicator monitoring system/network/diagnostic/power statusEnables cabinet-free front and side wall & machine mountingCompatible with M12 Screw lock and Push-pull fast-lockingRugged IP67 design resists EMC, vibration, dust, oil, and humidity from harsh/outdoorBuilt in Sensor/Actuator/Encoder Power Supply from each I/O portSupports PROFINET and Modbus/TCP, with extensible design for MQTT integration
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Product
Free Serial Port Tools
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*The clever terminal program for serial port and field-bus communication.*Build your own sending dialogs and create customized user interfaces *Simulate field-bus telegrams *Play Modbus ASCII/RTU master with predefined Modbus function dialogs
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Product
Free Serial-TCP (More Than Just A Device Server)
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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 speed. The Serial-TCP program (more than just a Device Server) bridges your existing Serial COM port and TCP/IP without the need for changing existing protocol. It works seamlessly and transparently, just like passive RS232 / RS485 / RS422 converters, repeaters, and hubs, while the difference is that one requires installation of cables and converters with limited distance; and the other simply makes use of the existing computers and networks with an unlimited transmission distance
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Product
4 2/3 Digital Resistance Meter
CS2-RS
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CS2-RS 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.We build 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 building 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 machinery and testing equipments applications.
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Product
4 Digits Temperature(TC) Meter
CM1-TC
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CM1-TC Thermocouple Temperature Meter has been designed in simple function and 4 digital 20.0mm LED displays with economic cost.They are can be programmed by tact switches that are hidden in front panel.They are also available to option relay output or an analog output or RS485(Modbus RTU Mode) communication.
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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
8Relay Robust Modbus RS-485 Remote I/O
ADAM-4168
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8ch relayOperation 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
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
EtherCAT Gateways
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EtherCAT Fieldbus gateways provide seamless communication between Modbus RTU/TCP and EtherCAT communication protocols.
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Product
6 Digits Process Meter
A6-PR
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A6-PR 6 Digits Process Meter has been designed with high accuracy measurement, 6 digit display, flexible I/O functions and communication port for process measuring application.There are also build in 4x External Control Inputs, and can option 4x Relay outputs, 1x Analog output and 1x RS485 (Modbus RTU Mode) communication port with multi-functions such as control, alarm, re-transmission and communication for a wide range of industrial applications.There was designed the zero tracking and stable tracking function in programming level.According to the application, user can set the function to get the suitable reading.
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Product
12DI/6DO IoT Modbus/SNMP/MQTT Ethernet Remote I/O
ADAM-6050
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12ch digital input(counter)/6ch 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
Self-reclosing Overcurrent And Residual Current Protection
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Wide range of solutions to guarantee personnel safety as well as maximum service continuity in the event of a ground current or breaker trip, with automatic reconnection of the installation. Available with RS-485 communications (Modbus RTU) and remote control inputs/outputs.
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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
Programmable Digital Panel Meters
RS485
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Kusam Electrical Industries Limited
• Manages sending and receiving signal of multiple Modbus RTU instruments.• Programmable address for reading data• Data form: Unsigned Int / Signed Int• Max.Baud rate: 38400• Programmable address:1 ~ 255• With alarm setting and analog output
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Product
18DI/18DO IoT Modbus/OPC UA Ethernet Remote I/O
ADAM-6350
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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
Modbus Register Converter - Serial To Modbus RTU Interface
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Translates Modbus registers and variable types from an older Modbus devices to a new Modbus device. The Model 2390 allows upgrading Modbus RTU devices without changing the system software. The 2390 also provides serial control of Modbus RTU devices for new applications that want the ease of using simple ASCII commands strings when controlling Modbus RTU devices.
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Product
4AO/4DI Modbus RS-485 Remote I/O
ADAM-4024
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4ch analog output/4ch digital inputProtocols:Modbus RTU,ASCIIWatchdog timer to recover the system3000VDC isolation protection
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Product
Fixed Gas Detectors
700 Series
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Teledyne Gas & Flame Detection
The sensor electronics are completely protected and immune to water ingress and corrosion. The sensor elements are all plug-in components and can easily be replaced in the field. Operator interface is non-intrusive via a small handheld magnet. Configuration and routine calibration is intuitive and menu driven with fully scripted instructions. Sensor status is displayed on a built-in alphanumeric LED display. The 700 Series intelligent sensor modules feature dual redundant outputs, a linear 4-20 milliamp analog signal and a Modbus RS-485 serial output.
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Product
8AI/11DI/10DO IoT Modbus/OPC UA Ethernet Remote I/O
ADAM-6317
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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
8AI IoT Modbus/SNMP/MQTT 2Ports Ethernet Remote I/O
ADAM-6217
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8ch analog input(voltage or current)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
Control/Gateway/Display All-In-One Industrial Panel PC
PanKonix Series-HMI Panel PC
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The PanKonix® series HMI is an Intel® Core™ i3/i5 and Intel Atom® x5/x7-based panel PC equipped with user-friendly, full-featured HMI software. It ensures seamless PLC connectivity through Modbus protocol support and incorporates trend charts, data logging, alarms, and cloud connectivity functions with RESTful API, MQTT, and OPCUA support for efficient data visualization and machine monitoring.
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Product
Smart Protocol Analyzer
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Works transparently over the Computer's I/O ports (serial & network). The analyzer supports Modbus, Fisher-ROC, BSAP, DNP and other Protocols. In addition to monitoring, this tool is capable of simulating Master and Slave devices.





























