Hello, I am assisting a client with the integration of their Hart Analog Output card using Hart protocol on a 1756-L73 PLC connected via ControlNet. The specific card being used is an OF8H card located on a remote rack. After configuring the OF8H card to support both Analog and Hart PV, I encountered an issue where the IO module was not responding and displayed a Module error 16#0304. However, when I kept the IO module in Analog only mode but enabled the Hart Channels, I was able to view the transmitter tags in the module settings. Can you provide any recommendations on how to successfully operate the module in Analog and Hart PV mode or Analog and Hart PV by channel? My goal is to receive feedback values over the PV. While I have a strong background in controls, I have limited experience with AB HART and ControlNet systems specifically.
Hello Whatyamacallme02, welcome to the forum. I have experience working with HART communication protocol, although I don't currently have a Rockwell HART master device. It is crucial to know the specific HART address assigned to your HART device. In your Logix program, there should be a setting to input the HART address configured in the field device. While most HART devices are typically set to address zero, it is possible to configure them to other HART addresses. If you are unsure about the HART address, it's recommended to have a HART modem and a compatible field device tool for HART communication. This is essential unless the device has its own display function. Best of luck with your HART setup!
Thank you for providing your feedback, Alfred. I have successfully activated HART for the channels on the module set to Analog only, and I am receiving accurate data from each instrument, including tag and software revision. This indicates that communication from the card to the devices is functioning well. However, I am unable to access PV, SV, etc. as the tags are not generated for the IO card in Analog Only mode. Transitioning to either of the two Analog and HART options, which requires an offline switch to generate tags, results in the IO non-response and a yellow triangle indicating the changed card. Additionally, an error 16#0304 is displayed on the module, suggesting that it may be configured unexpectedly and causing faults. I will investigate the configuration to identify potential addresses for further progress.
After reviewing the CIP specification, it appears that ControlNet is being used. Please refer to the table below as this could be the source of the problem you are experiencing. Consider utilizing RSNetworkx and adjusting the SMAX value to address the issue. We hope this information proves useful in resolving your issue.
Is it possible to remove modules from the I/O tree while online in ControlNet? Unlike ControlNet, in Ethernet/IP you have the ability to delete modules online without the need to go offline first. This feature allows for seamless deletion and readdition of modules.
lmscar12 inquired about the possibility of deleting modules from the I/O tree online in ControlNet. While in Ethernet/IP you can perform this action without going offline, in ControlNet you may need to remove the module from the project and then re-add it. Is this what you are referring to?
From your description, it seems like the OF8H card isn't fully integrating with the HART communication when set up to utilize both Analog and HART PV. As you may know, Error 16#0304 typically indicates a communication issue or possible firmware incompatibility. I would suggest firstly checking the firmware version of your 1756-L73 PLC and comparing this with the supported firmware version of your HART Analog Output card. Ensure that both are compatible. Moreover, always verify that the wiring connections are proper as incorrect wiring can impede operation. Lastly, if your PLC and HART card firmware versions are compatible, try doing a factory reset on the OF8H card. Start by just setting up analog then slowly reintroduce HART PV or HART PV by channel. Sometimes step-wise setup can help isolate issues and ensure smooth transitions.
It sounds like you're dealing with a complex issue, but I've had some experience with AB Hart and ControlNet before. This error code "16#0304" is typically associated with a communication issue between your PLC and module, possibly due to incorrect module configuration. Check if you have the latest firmware installed for your modules and if your communication path is configured correctly in your RSlogix program. Verify if your Hart pass-through is enabled on your PLC. For the Analog and Hart PV mode, you might need to ensure that your I/O configurations, including the slot number and input type, are correct. Also, make certain your Hart device descriptors are up to date based on the exact model of the transmitters you're using. There is a chance that changing the configuration type in the OF8H module to match the actual module type might also resolve the issue. Remember to be patient and go systematically - these problems can be quite tricky but not unsurmountable. Good luck with your project!
✅ 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: The Module error 160304 could indicate a communication issue or a configuration problem between the OF8H card and the 1756-L73 PLC. Double-check the configuration settings and ensure proper communication is established over the ControlNet network.
Answer: Enabling the Hart Channels while in Analog only mode allows you to access the transmitter tags because the module is still recognizing the Hart communication protocol. This indicates that the Hart functionality is working correctly even in Analog only mode.
Answer: To successfully operate the module in Analog and Hart PV mode, ensure that the configuration settings for both Analog and Hart PV are correct and that the communication between the PLC, IO module, and transmitter is properly established. Consult the documentation for the OF8H card and the 1756-L73 PLC for detailed setup instructions.
Answer: It is recommended to familiar
Join hundreds of satisfied customers who have transformed their maintenance processes.
Sign up today and start optimizing your workflow.