Using the Modbus/TCP Protocol

ION 7500 / ION 7600 User’s Guide	Using the Modbus/TCP Protocol

You can use the Modbus RTU protocol to write values into ION external numeric, pulse and Boolean registers, allowing you to enable, disable and reset meter functions. You can also use the Modbus protocol to change setup register values in various ION modules to configure the meter’s operation.To bring data into the meter with Modbus RTU, you must disable the meter’s password security. Information about writing ION registers through Modbus is available in the ION 7500 / ION 7600 Series meter Modicon Modbus Serial Communications Protocol document.

Modbus/TCP is the newest open Modbus protocol variant (formerly called MBAP). It defines the packet structure and connection port (port 502) for the industry standard TCP/IP protocol. The structure of Modbus/TCP is very similar to the Modbus RTU packet except that it has an extra six-byte header and does not use the cyclic redundancy check (CRC). Some of the newest ION firmware now supports Modbus/TCP for direct communications with the meter.

Modbus/TCP retains the Modbus RTU limit of 256 bytes to a packet. It is suggested that higher through-put is possible if this limitation is removed. This variant is called Enhanced Modbus/TCP but, so far, few devices have moved to support it.

Modbus TCP Communications

You can now communicate to the meter via Modbus TCP (formerly called MBAP).

Your meter must have the optional Ethernet port. Connect to socket 502.

Connect to socket 502

Be aware that you cannot form an EtherGate to the Modbus TCP network.

Chapter 3 - Default Meter Functionality

Page 79

7500, 7600 specifications

Multi-Tech Systems has established a strong reputation in the realm of communication technology, particularly known for its innovative products that cater to various industrial applications. Among their popular offerings are the Multi-Tech Systems 7600 and 7500 series, both designed to address the increasing demand for reliable, efficient, and flexible communication solutions in a connected world.

The Multi-Tech 7600 series is renowned for its robust design and multifunctional capabilities. One of its main features is support for multiple communication protocols, including cellular, wired, and wireless networks, ensuring seamless connectivity across different platforms. This versatility makes it an ideal choice for applications in industries such as transportation, healthcare, and logistics. The device is equipped with advanced signal processing technology, which enables it to maintain high-quality connections even in challenging environments.

On the other hand, the Multi-Tech 7500 series focuses more on the integration of IoT (Internet of Things) technologies. This series is particularly adept at connecting various smart devices, allowing for real-time data transmission and monitoring. Key features include extensive support for low-power wide-area network standards, making it an excellent option for applications that require long-range connectivity while minimizing power consumption. This characteristic is particularly advantageous for battery-operated devices deployed in remote locations.

Both series are built on versatile hardware platforms that allow for scalability and customization, catering to the unique needs of different industries. With embedded security features, including encryption and secure protocols, they provide a high level of protection for sensitive data, making them suitable for sectors that prioritize security, such as financial services and healthcare.

In terms of characteristics, both the 7600 and 7500 series are designed for ease of integration, featuring user-friendly interfaces and comprehensive development tools. This empowers developers to quickly deploy solutions and minimizes time to market. Additionally, the products offer extensive documentation and support, facilitating efficient onboarding for new users.

Overall, Multi-Tech Systems’ 7600 and 7500 series provide a powerful combination of features, technologies, and characteristics that make them standout choices for organizations looking to enhance their communication capabilities in a rapidly evolving digital landscape. Their capability to connect and interact with a wide range of devices and protocols ensures that businesses can adapt, innovate, and thrive in an increasingly connected world.

Multi-Tech Systems 7500, 7600 manual Using the Modbus/TCP Protocol, Modbus TCP Communications

Models: 7500 7600