Hello everyone, I am attempting to link a Mitsubishi Q series PLC with a QJ71E71 Ethernet card to Kepware. I am currently utilizing the TCP Protocol, however, I am experiencing sporadic disconnections and can only reconnect by power cycling the station. I have come across suggestions that using UDP may be more reliable. Does anyone have experience with this issue? Any advice on configuring UDP for this setup would be greatly appreciated. Thank you!
Make the switch to User Datagram Protocol (UDP) for a seamless and reliable experience.
When it comes to seamless performance, goghie recommends making the switch to UDP. Do you have any specific configuration instructions for both Mitsubishi and KepServerEx that I should follow? Your guidance is greatly appreciated!
In all honesty, the type of protocol used for the PLC end doesn't seem to be a critical factor. In a previous system, only MC protocol was utilized without UDP, and it still functioned successfully. The network settings include an IP address such as 10.201.1.67 with a broadcast address of :255, and UDP port 5000. For the QJ71 module, the port is typically set to 5001. It is recommended to configure the PLC for UDP communication. While the provided screenshot is for FX ENET, the setup is likely similar for the E71 module.
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This is my first time working with the QJ71E71-100 Ethernet Module and I am looking to connect two QJ71E71-100 devices to a PC with an IP address of 192.168.50.23 through a router with the IP address of 192.168.50.1. Can anyone provide a step-by-step guide and assistance with the necessary settings? Thank you in advance.
Hey there, it seems you're facing quite an issue with the TCP connection. I had a similar experience with a Q Series and resolved it by switching to UDP. The key benefit is that UDP doesn't require constant 'handshaking' unlike TCP, which can be a likely cause for your sporadic disconnections. When configuring UDP, remember to enable UDP/IP communication function and specify a UDP/IP port number at 'Ethernet Setup' in QJ71E71 module parameters. Also, make sure Kepware supports UDP communication with your PLC model. Good luck and I hope this helps!
Hi there, I've worked with a similar setup before. From my experience, TCP generally provides a more reliable connection than UDP because it has built-in error checking and delivery confirmation. That said, if you're experiencing disconnections, it might not be a protocol issue, but could be related to a setting in Kepware or the PLC itself. Keep working on the TCP settings before switching to UDP. Look at things like timeouts and try increasing the poll rate. Also, ensure that your Mitsubishi PLC is up-to-date to eliminate any firmware issues.
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Answer: Answer: Sporadic disconnections could be due to network issues, configuration settings, or compatibility problems between the devices. It is recommended to check the network stability, verify configuration settings, and ensure compatibility between the devices.
Answer: Answer: UDP can be more suitable for real-time applications due to its connectionless nature, but it may not provide the reliability and error-checking features of TCP. It is essential to consider the specific requirements and characteristics of the application before deciding to switch to UDP.
Answer: Answer: Configuring UDP for the connection between the Mitsubishi QJ71E71 Ethernet card and Kepware would involve setting up the appropriate network parameters, adjusting communication settings, and ensuring proper data exchange between the devices. It is advisable to refer to the device manuals and consult with technical support for detailed guidance on configuring UDP for this setup.
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