Understanding Device States in RSLinx Classic

Learn Logix Part 4.4. In this article, we learn how to understand and fix abnormal device states in RSLinx Classic.

Learn Logix is a series of articles designed to teach you everything you need to know to work with Rockwell Automation’s Studio 5000 Logix Designer and the Logix 5000 series of PLCs.

In the last part of the series, we learned how to configure an Ethernet driver in RSLinx Classic and work with devices on the network. You can find that part here or if you’re new to the series, you can find all of the previous parts here.

In this part of the series, we’ll learn how to interpret and fix abnormal device states in RSLinx Classic.

Once you have your USB or Ethernet communication driver set up, you can see the devices on an industrial network in RSLinx Classic.

You can determine the state of a device based on the icon shown for the device in RSLinx Classic.

There are two abnormal device states that can be shown in RSLinx Classic. Let’s look at these two abnormal states and their causes.

Unavailable Devices

Unavailable devices are marked with a red X

Devices that were previously communicating on the network but are no longer available are marked with a red X.

When you see a device with a red X, it indicates that the device is no longer accessible by RSLinx Classic. This may be because the IP address of the device has changed, or because the device has been disconnected from the network.

Missing EDS File

Devices with a Yellow ? Do not have an associated EDS file installed

Devices that do not have an associated Electronic Data Sheet (EDS) file installed are marked with a yellow ?.

Since there is not an associated EDS file installed, RSLinx Classic considers the device to be unknown. Since RSLinx can still communicate with the device, the correct name is shown.

With certain devices, like controllers and communication modules, the EDS file can be uploaded directly from the device. For other devices, where the upload function is not available, the correct EDS file can be downloaded from the Rockwell Product Compatability and Download Center on the Rockwell Automation website.

Once the EDS file is installed on the machine running RSLinx Classic, the device will be shown in the network overview correctly.

Conclusion

In this article, we learned how understand and fix abnormal device states in RSLinx Classic.

In the next part of the series, we will learn about the various operating modes available for Logix 5000 controllers and the programming operations available in each mode. If you haven’t already, be sure to subscribe to the mailing list below to be notified when the next part is available.

Update: You can find the next part of the Learn Logix series, Understanding the Logix 5000 Controller Operating Modes, here. In this article, we learn about the various operating modes available for Logix 5000 controllers and the programming operations available in each mode.

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