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Modbus Organization

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Modbus News

Modbus Organization Replaces Master-Slave with Client-Server
The Modbus Organization Board of Trustees announces it is expunging all occurrences of inappropriate language of the query and response paradigm of Modbus communications. All instances of "master-slave" in the organization's literature and on its website will be removed.
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Modbus Security - A New Protocol to Improve Control System Security
The new protocol provides robust protection through the blending of Transport Layer Security (TLS) with the traditional Modbus protocol. Download a a free copy of the specification at
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Product News

AutomationDirect Announces CLICK PLUS Serial Communication Option Slot Module and 2-Slot CPUs
CLICK PLC with advanced features, includes Wi-Fi capability, MQTT communication, data logging, and mobile access (supports both Modbus RTU and ASCII communication).
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MQTT Gateways Create an Easy Way to Move Factory Floor Data to Cloud Application Services
Real Time Automation releases the MQTT protocol on their bestselling 460 industrial gateway line. With an MQTT protocol gateway, it is easier than ever before to move industrial device data to cloud applications like AWS IoT Core, IT or enterprise systems.
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Acromag - Measuring Temperature with a High-density Ethernet I/O Solution
Acromag's BusWorks® NT Series was a good fit for this application that required remote I/O and needed to be a Modbus server that could accept a mix of thermocouple and RTD signals.
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Opto 22's groov RIO® Ethernet edge I/O ships with PID, SSH, and LDAP support
Closely following the initial launch of groov RIO in early 2020, Opto 22 has further expanded the remote I/O, connectivity, and security features of its edge I/O module with the release of its version 3.0 firmware.
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Phoenix Contact releases unmanaged switch series with new capabilities
The FL SWITCH 1000 features automation protocol prioritization (APP), making it easy to prioritize important traffic. Mission-critical industrial communications, such as Ethernet/IP, PROFINET, Modbus/TCP, and BACnet, are sent through the network first.
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Hilscher's New M.2 Format PCI Express Card Supports Fieldbuses and Real-Time Ethernets
At the heart of the M.2 2230 card is Hilscher's award-winning netX 90 multiprotocol communication chip. M.2 card users can choose among loadable firmware for PROFINET IO-Device, EtherNet/IP Adapter, EtherCAT and OpenModbus/TCP.
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Announcing Acromag's new Vertu™ brand of universal input displays
These instruments combine the digital indicator function of a panel meter with optional signal conditioning for 4-20mA transmitter output and/or alarm trip solid-state relays. Big, bright 1.2 inch (31mm) numerals are clearly visible from far away, even in bright sunlight. Modbus RTU also supported.
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Extend the Life of your Legacy DCS System by Getting Access to FOUNDATION Fieldbus Devices over Modbus
Softing's versatile Linking Device and Modbus Gateway (FG-200) integrates up to four FOUNDATION™ Fieldbus (FF) H1 links into control systems supporting HSE or Modbus.
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Fieldbus International releases WirelessHART adapter with Modbus RTU interface: the T910.
The T910 allows up to 8 device variables (floating point or integer) and an extensive array of device status indicators to be passed from the Modbus device over the WirelessHART network.
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Weinzierl offers powerful and compact KNX Gateway to Modbus
The device enables the interpretation and scaling of Modbus data according to the data point types of the KNX standard. It can be used as Modbus client or server.
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Softing Presents Connectivity Solutions for The Process Industry
Softing's smartGate product family supports users in integrating disparate protocols, ensures end-to-end digital data exchange, and enables greater efficiency and flexibility in production.
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Applied Motion Products Offers Compact Step Motors with High Torque for Space-Limited Applications
Compact step motors in NEMA sizes 8, 11 and 14 are great for applications with limited space such as medical devices, 3D printers, analytical and medical instruments, textile equipment, laboratory automation equipment, surveillance equipment, camera controls, and more. The new STF stepper drive family is Modbus-compatible and offers on-board programming and network communications.
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