How to Configure Cutler Hammer WPONIDNA DeviceNet Modules

Question:

Hello! We are currently in the process of planning a cut-over for a MCC Advantage Starter DeviceNet Module, specifically focusing on segregating some IOs on a new PLC. While I am fairly certain that the modules in question are Cutler Hammer WPONIDNA modules, they were likely installed around 20 years ago. Unfortunately, the MCC is already powered and the drawings are not up to date, making it difficult to confirm at this time. I was able to find a picture of the module, but the manual has long been replaced by Eaton C441 DeviceNet Modules. Based on the pictures I have seen, it appears that you cannot set the Node address using switches. Do I need a specific software to configure the addresses? If so, what software should I use? Additionally, I am curious about the required end of line resistance for closing the daisy chain. Any insights on this would be greatly appreciated. Thank you.

Top Replies

While I cannot provide information specifically on these modules, it is important to note that the DeviceNet specification mandates the use of a 121Ω termination resistor at both ends of the trunk cable.

Thank you. Understandable.

Inquiring about setting Node addresses with switches based on images seen, dalporto questioned the need for software to configure addresses and what software would be necessary. Reflecting on past experience with CH DeviceNet systems in the '90s, they recalled using a software package and PCM-CIA card to directly connect to the DN network for configuration, as switches couldn't be used for this purpose. To potentially assist with this query, a document from Eaton might provide helpful information. You can access the document here: https://www.eaton.com/ecm/groups/public/@pub/@electrical/documents/content/985139392063.pdf

When the WPONIDNA was unpacked at Node 63, it followed the typical device setup process. However, the DeviceNet Object, which includes MAC ID and Data Rate, can only be adjusted through the network using configuration tools such as C-H Net View or RSNetworx for DeviceNet's node commissioning tool. Typically, C-H and A-B networked MCC's were configured by connecting and verifying each device one by one, setting the DNet Object, and power cycling to confirm successful configuration.

I want to express my gratitude to everyone involved in this project. I am eagerly awaiting the customer to send me the .dnt configuration file for RSNetwork so I can learn more about the setup and appearance, as this is unfamiliar territory for me. I initially believed that every starter required a Node number similar to IO Flex drops, but connecting them sequentially now seems like a logical approach.

Yes, you're correct. For these older Cutler Hammer modules, you would need to use a programming software to set the Node address and other parameters. Eaton's RSNetWorx for DeviceNet software should be able to get the job done for you. For the end of line resistance, typically a terminating resistor of 120 ohms is used to avoid reflected waves in the network. make sure you install them at both ends of the trunk line. Do consult your hardware manual for any specific requirements related to your device.

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Frequently Asked Questions (FAQ)

FAQ: 1. How do I configure Cutler Hammer WPONIDNA DeviceNet Modules if I cannot set the Node address using switches?

Answer: - You will need specific software to configure the addresses on the Cutler Hammer WPONIDNA DeviceNet Modules. You can use Eaton C441 DeviceNet Modules for this purpose.

FAQ: 2. What software should I use to configure the Node addresses on the Cutler Hammer WPONIDNA DeviceNet Modules?

Answer: - You can use Eaton C441 DeviceNet Modules software to configure the Node addresses on the Cutler Hammer WPONIDNA DeviceNet Modules.

FAQ: 3. What is the required end of line resistance for closing the daisy chain on Cutler Hammer WPONIDNA DeviceNet Modules?

Answer: - The required end of line resistance for closing the daisy chain on Cutler Hammer WPONIDNA DeviceNet Modules is an important consideration. Additional insights on this aspect would be beneficial for proper configuration.

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