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?
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.
This might be related to a discrepancy in your communication path configuration on RSLinx. Make sure you have the right type of driver set-up, possibly Ethernet/IP for the 1756-EN2T. Also, ensure you've correctly outlined the path to the second PLC, symbolically like [LAN]:[CPU Slot Number]. If that's not the issue, it could be related to multiple versions of RSLinx installed on your computer, which may be conflicting. Try uninstalling and reinstalling RSLinx, ensuring you have the latest version.
It seems you're experiencing a common issue encountered by many PLC users. First and foremost, ensure you've got the latest version of RSLinx because older versions are notorious for this kind of problem. If your version is up-to-date, the problem might be due to the configuration of your network. Double-check to ensure that the EN2T module is correctly configured to match the network settings of your second PLC. If all else fails, you may have to change the way RSLinx sees your devices, possibly through the use of "Driver per Device" rather than "Device per Topic". This method has worked for me in the past. Hope this helps - let us know how it goes.
It sounds like you're dealing with a peculiar issue, but I might have some information that could help. RSLinx might not be recognizing the second PLC because of a routing problem or perhaps an IP conflict. You could check if the IP address for the second PLC is correctly configured and unique. Furthermore, ensure that your 1756-EN2T module is properly set up for bridging between both devices. Lastly, remember that switching between RSLinx and FactoryTalk Linx requires them to release and renew connections since they can't share connections to the same device simultaneously. I suggest narrowing down the issue by examining your network settings and connection configuration carefully.
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Answer: This could be due to a configuration issue or compatibility problem between RSLinx and the network setup.
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.
Answer: The issue could be related to the network configuration, firewall settings, driver compatibility, or network traffic.
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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