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How to Resolve RSLinx Detection Issue for Second PLC Connection?

Question:

I own two Programmable Logic Controllers (PLCs) connected to our plant - one directly and the other through a 1756-EN2T module. While I could easily have both PLCs networked with an additional cable, I am seeking a more convenient solution. I am currently facing an issue where RSLinx is unable to detect the second PLC online, but Factorytalk Linx can. Is there a method to resolve this and have RSLinx recognize the second PLC?

Top Replies

In RSLinx, easily configure Ethernet settings by right-clicking on the desired Ethernet node (such as EtherNet 3, Bridge 1 as shown in your setup) and selecting Properties. From there, simply map the necessary IP addresses for seamless connections.

In RSLinx, simply right-click on the Ethernet node (EtherNet 3, Bridge 1 in your screenshot) and select Properties to map the desired IP addresses for connection. Thank you for the speedy response!

What a coincidence! The topic we were just talking about in the office came up right before you made your post.

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Frequently Asked Questions (FAQ)

FAQ: 1. Why is RSLinx unable to detect the second PLC online while Factorytalk Linx can?

Answer: This could be due to a configuration issue or compatibility problem between RSLinx and the network setup.

FAQ: 2. Is there a way to resolve the RSLinx detection issue for the second PLC connection?

Answer: Yes, there are troubleshooting steps you can take to ensure RSLinx recognizes the second PLC, such as checking network settings, verifying connections, and updating software.

FAQ: 3. What could be causing RSLinx to have trouble detecting the second PLC connected through a 1756-EN2T module?

Answer: The issue could be related to the network configuration, firewall settings, driver compatibility, or network traffic.

FAQ: 4. How can I network both PLCs more conveniently without relying on additional cables?

Answer: You may consider exploring different network configurations, protocols, or software solutions that can help streamline the connection process for both PLCs.

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