I am currently faced with a communications issue while trying to connect my SLC500 PLC 1747-L30A using a 1747-PIC cable box combination. My computer, running Windows 3.1 and the SLC500 APS Series software version 6.04, seems to have a malfunctioning COM 1 port. Despite switching to a Windows XP computer, I encountered a Fatal Communications hardware error while in the DOS environment. Are there any alternative cables or communication settings I should explore to resolve this connectivity issue with the PLC? Your insights are greatly appreciated.
Have you verified that the communication settings, such as baud rate and parity, are the same on both the serial port and the PLC port? Although I am unfamiliar with APS software, you can check the communication port settings directly in RSLinx. This can ensure seamless communication between devices.
I have explored various settings in the software, including baud rate and com port configurations, but I am still encountering the same error message. If there is a hidden advanced setting that I have missed, please let me know.
Which service pack is currently installed on your Windows XP operating system? It is worth noting that the PIC box may not function properly on Windows XP Service Pack 3 (SP3) and later versions.
Service Package 2 for Enhanced Performance and Efficiency.
Make sure to confirm that the port you are using is definitely physical com port 1 in the BIOS settings, as this hardware era had distinct ports and IRQs. It is essential to verify that it is indeed configured as com 1 and not mistakenly set as com 2 or com 3.
I faced a similar issue with my SLC500 PLC not long ago. One solution I found was opting for a 1747-UIC USB to DH485 interface converter, it worked like a charm. It could be worth checking your RSLogix500 communication settings too - make sure they match up with your PLC configuration. Remember that the SLC500 APS Series software can be a bit picky with certain Windows iterations. It might be beneficial to run it in a Windows 95 or 98 compatibility mode if you're using Windows XP. Hope this helps!
I've run into a similar issue before and I found that the 1747-PIC cable isn't the most reliable with newer computers or operating systems. If possible, I’d recommend using a USB to DH-485 interface converter (1761-NET-AIC) instead. Regarding the Fatal Communications hardware error, try running your software in XP compatibility mode. Windows XP has different handling for COM ports than newer versions, so it might just help with the COM 1 port issue. Also, check the device manager to make sure your COM port settings match those required by the SLC500. Good luck!
It sounds like you're having a tough time with this, I've encountered similar issues in the past. For the SLC500 1747-L30A, I'd recommend you to use a 1747-UIC cable as it's USB based and works well with Windows XP. No hassles with COM ports. Also, please check the RSLinx settings which play a crucial role in communication. At times, putting the device into a different communications mode such as DF1 Full Duplex may help. Additionally, you can try using a USB to Serial converter if you're having issues with your COM port. I hope this helps!
It sounds like you've been on quite the journey troubleshooting that connection! Have you considered checking the settings in your PC’s Device Manager to ensure the COM port is properly configured? Also, while the 1747-PIC is commonly used, some users have had success with the 1784-PCC or even the 1747-UIC for more reliable connections. If you still have issues, it might be worth looking into any grounding problems or check if any hardware components are showing signs of wear. Good luck!
✅ 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: If you are facing connectivity problems with your SLC500 1747-L30A PLC, you may need to troubleshoot the communication settings and cables being used for the connection.
Answer: To address Fatal Communications hardware errors in a DOS environment, you may need to check the compatibility of the communication settings, cables, and software versions being used for the connection.
Answer: If you are encountering communication problems with your SLC500 1747-L30A PLC, you may consider exploring alternative cables or communication settings to establish a successful connection with your computer.
Answer: If you are experiencing issues with a malfunctioning COM port while connecting your SLC500 PLC, you may need to troubleshoot the port settings, check for any hardware faults, and ensure compatibility with the communication software being used.
Join hundreds of satisfied customers who have transformed their maintenance processes.
Sign up today and start optimizing your workflow.