Subject: Seeking Guidance on Ethernet Communication Setup Between CompactLogix and Modicon Quantum Hello Everyone, I’m reaching out to get some assistance with establishing Ethernet communications between my new CompactLogix machine and an existing Modicon Quantum 140CPU65260. Has anyone successfully configured basic Ethernet communication between these two systems? Thank you in advance for your help! Best, Steve
When I faced this scenario, I utilized the InTouch HMI, which was compatible with both programmable logic controllers (PLCs), essentially functioning as a virtual router. By reading a tag from one PLC, I employed scripting techniques to transfer that value to a corresponding tag in the other PLC. This method effectively streamlined communication between the PLCs, enhancing efficiency in my automation system.
If your Human-Machine Interface (HMI) struggles with communication protocol management, I suggest considering a network gateway. One excellent choice is the user-friendly devices offered by Real Time Automation, which are straightforward to configure. Although you could utilize the socket-based Modbus/TCP client sample code included with Studio 5000 for this purpose, it can be memory-intensive, lacks efficiency, and may require extensive troubleshooting. Opting for a dedicated gateway can streamline your communication processes and enhance overall system performance.
The Red Lion Datastation Plus is an excellent choice for this particular application. I currently utilize several units to seamlessly interface between legacy SLCs and our modern Modicon M340 controllers. This versatile solution enhances connectivity and optimizes performance across different systems.
Hi Steve! I’ve worked with both CompactLogix and Modicon Quantum systems, and I can suggest starting with the Ethernet/IP protocol for the CompactLogix to communicate effectively. Make sure the IP addresses for both devices are on the same subnet. For Modicon, you might need to use a gateway or a protocol converter if it doesn’t support Ethernet/IP directly. Additionally, check the data types and make sure your tags match in both systems. Good luck, and feel free to reach out if you have more questions along the way!
Hi Steve! I’ve worked on similar setups before, and I found that using TCP/IP-based protocols like Ethernet/IP for CompactLogix and Modbus TCP for the Modicon Quantum can work well for communication. You might want to check if your Modicon supports multiple protocols and configure each device’s IP settings correctly. Make sure to set the right port numbers for Modbus (usually 502) and ensure both devices are on the same subnet. Good luck, and feel free to reach out if you hit any snags!
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