Seeking to see if others are facing the same problem as me. I am unable to establish a connection with a new 1769-L16ER-BB1B Ser. C controller straight out of the box, whether through USB or Ethernet. The "OK" LED is flashing a slow red. Upon plugging it in via USB, Windows 10 does not detect any connection (confirmed that the cable is functioning with other devices). When connected via Ethernet directly to the computer, Windows displays a message stating that the network cable is unplugged. I have attempted multiple Ethernet cables with the same result. Despite returning the controller to the distributor and receiving a replacement with the same part number and series, the issue persists. Tech support has directed me to tech note QA14426, where I have exhausted all relevant solutions to no avail. I am considering the possibility of a faulty batch of PLCs being produced. Has anyone else encountered this issue? Any other suggestions to resolve this? Thank you.
Have you attempted using a different computer?
JeremyM recommended trying a different PC to solve the issue. I have tested a total of three computers.
Are you experiencing any errors in the Windows Device Manager when connecting devices via USB?
When you connect your device to a USB port and access the Windows Device Manager, check for any error messages associated with connected devices. I have noticed that when I plug or unplug my device, no new devices appear in the device manager, and there is no system sound notification indicating a successful USB connection. This lack of refreshed device information may indicate an issue with the USB connection.
cjarvis64 mentioned that upon connecting or disconnecting devices, they do not see any new devices appearing in the device manager, and the system does not perform the usual "refresh" action when a new device is connected. There is also no system sound notification for "USB Connected." Have you tried accessing hidden devices by going to View > Show Hidden Devices? This may help in identifying any unrecognized devices.
From what you've described, it seems like you've pretty much covered all your bases. Indeed, it's strange for both the original and replacement unit to exhibit the same issue straight out of the box. One possibility could be related to the driver installation on your Windows 10 system. You could try uninstalling and reinstalling the drivers. Additionally, check if there are updates for these drivers. Sometimes, an older driver might conflict with new hardware. Finally, you may want to test the controller on another computer to rule out any potential issues with your specific machine. It's unlikely, but still worth a shot given your predicament. Also, you may want to check if others outside this forum have had similar experiences, you could expand your search to broader PLC forums or manufacturer's own support community.
I had encountered the exact same issue a while ago, turned out to be a driver issue in my case. Make sure you have the latest firmware and driver installed for the controller. Also, check the compatibility of your Windows 10 version with the controller, as some older controllers may not play well with the newer Windows OS. If this still persists, try establishing connection with a different computer. If the problem still exists, then it's possible you might have received a faulty PLC again. It's a rare occurrence but can happen.
✅ Work Order Management
✅ Asset Tracking
✅ Preventive Maintenance
✅ Inspection Report
We have received your information. We will share Schedule Demo details on your Mail Id.
Answer: Answer: If you are facing connectivity issues with your controller, it could be due to various reasons such as faulty hardware, incorrect configurations, or issues with the network setup.
Answer: Answer: A slow red flashing "OK" LED could indicate a problem with the controller's status or connectivity. It is essential to troubleshoot this issue to identify the root cause.
Answer: Answer: To troubleshoot connection problems, you can start by checking the hardware connections, verifying the network settings, ensuring the cables are functioning correctly, and exploring any relevant technical notes or resources provided by the manufacturer.
Answer: Answer: If you have tested multiple Ethernet cables and encounter the same issue, it is recommended to verify the network port settings, check for any software conflicts, and consider reaching out to technical support for further assistance or possible hardware replacement.
Join hundreds of satisfied customers who have transformed their maintenance processes.
Sign up today and start optimizing your workflow.