I am currently utilizing a compactLogix L35 to manage a Danfoss VFD via Ethernet connection. My inquiry pertains to the possibility of retrieving data from the drive back to the plc. Specifically, I am interested in monitoring parameters such as rpm's and amperage to display on an HMI. I am struggling to determine the method of extracting this information from the drive. Has anyone encountered this issue before and found a resolution?
Which model are you using? My website features approximately 40 FC302 series drives connected to Ethernet/IP. Some drives are linked to a ControlLogix, while others are connected to a CompactLogix. Are you currently controlling these drives? I don't have the source code with me at the moment, but I can retrieve it tomorrow (NZT). It's relatively straightforward to control the drives with approximately 8 words in each direction.
I have a programmable logic controller (PLC) controlling a drive via Ethernet. I am looking for the best method to retrieve information from the drive. Do I need to utilize MSG and read, or is there another approach I should consider?
What type of Ethernet protocol are you currently utilizing? I am assuming E/IP. While it may not be essential, understanding this information can be beneficial. Can you provide details on how the drive has been configured for control purposes?
This system is set up for remote control via PLC and is currently operational in this configuration.
lostcontrol inquired about the drive configuration for remote control, to which tmoore3 responded that it is currently set up to be controlled by a PLC. However, this response does not directly answer the question. A valid response would include options such as Profidrive standard telegram, PPO Type 1 Module consistent PCD, PPO Type 1 Word consistent PCD, PPO Type 8 Module consistent PCD, or PPO Type 8 Word consistent PCD. The standard configuration is PPO Type 3, which includes Controlword and Reference (as well as Statusword and Speed) parameters. It's important to note that with PPO Type 3, only certain parameters can be read. This information pertains to Profibus connections. For Ethernet/IP setups, a similar list of configuration options can be found in the provided link, assuming the use of a MCA 121 Ethernet/IP option.
I've worked with a similar setup before. There's a way to do this by setting up a specific communication path. Under your Ethernet module configuration, create a generic Ethernet module for the Danfoss drive. For relevant parameters such as rpm and amperage, they likely have corresponding registers that can be set to readable through your PLC. You'll have to refer to the Danfoss communication manual to get the specific addresses. Once you have them, just point your HMI tags at those same addresses in the PLC. It might take some tweaking but you'll get the info you need.
I've dealt with a similar issue before. You should be able to retrieve data from the Danfoss VFD using Modbus TCP/IP protocol if it's supported by your device. You'll need to set up your PLC as a Modbus client and configure it to read the specific registers from the drive that contains RPMs and amperage data, and then map them to your HMI accordingly. Consult the VFD manual to find which Modbus registers correspond to driven parameters. It tends to be a little technical, but with the correct configuration, you should be able to monitor all the parameters in HMI.
I’ve worked with a similar setup, and it’s definitely possible to read VFD parameters like RPM and amperage back to your CompactLogix. You'll want to check if your Danfoss VFD supports the necessary Ethernet/IP communication. Typically, you can use a combination of Explicit Messaging or I/O Messaging in Rockwell’s Studio 5000 to pull that data into your PLC. Make sure to refer to the VFD’s manual for the specific object and service codes needed. Once you've established the connection, you can map those parameters to your HMI for monitoring. If you run into specific roadblocks, feel free to share, and we can troubleshoot together!
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Answer: 1. How can I retrieve data from a Danfoss VFD for monitoring on an HMI using a CompactLogix L35 PLC? - To retrieve data from a Danfoss VFD for monitoring on an HMI using a CompactLogix L35 PLC, you can establish an Ethernet connection between the CompactLogix L35 and the VFD. You will need to determine the method of extracting information such as rpm's and amperage from the drive to display on the HMI.
Answer: - You can monitor various parameters such as rpm's and amperage from the Danfoss VFD on the HMI using a CompactLogix L35 PLC. These parameters can provide valuable insights into the operation and performance of the VFD.
Answer: - If you are struggling to determine the method of extracting data from a Danfoss VFD for monitoring on an HMI with a CompactLogix L35 PLC, you are not alone. It can be a common challenge, but with the right approach and configuration, you can overcome this issue.
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