Devices Monitor

Runtime Diagnostics

The Runtime Diagnostic provides additional from the Module Information, Property Watch, and the Trace Window.

To access the Diagnostic tolls, access Runtime → Runtime Diagnostics.

You can also access the mentioned feature after you start the solution. In this case, select the desired diagnostic feature in the Startup window.

Module Information

The Module Information tool provides details about the operation of the modules. By selecting the devices module and a specific channel, you can access information regarding the function of the communication channel. The "Read Groups Information" section is essential as it provides data about the virtual reading groups, including the runtime of each item, the quantity of readings, and any failed readings. It also reports the code and date/time of the last error.

To use the Module Information Tool:

1. Go to Read Groups Information to look at the number of successful and failed communication events and quickly identify the communication blocks.
2. Suppose you have systematic errors in all blocks or status codes with negative values. In that case, it typically means you cannot access the remote device. Check if the node address is correct.
3. If you have specific blocks with systematic errors, verify the Tags and addresses that are connected to the blocks. Use the TraceWindow with the Device information to collect information about the communication errors.
4. For some protocols, like OPC, the discarded items will show as the wrong address in the configuration.

Remember that you can only READ from a field device when an enterprise application is running in test mode. Running the application with ONLINE CONFIGURATION enabled is beneficial because it allows you to modify the configuration without starting and stopping the driver. You can change PLC addresses, AccessTypes, and most application settings and see the results in real-time on your running application.

To manage modules efficiently, you can use the Startup window or the PropertyWatch tool to start and stop individual modules instead of restarting the entire runtime system.

Property Watch

Property Watch is a diagnostic tool used to access the Tags and internal properties of the system for reading or writing. Type the property's name in the Object column, and you will find its value in the Value column.

For example, the value becomes available in the screen shown below after selecting  Device.Channel. Other properties are also displayed for the selected object on the right side.

Trace Window

The Trace Window tool displays system messages in a data grid interface. If you enable the module devices in the settings, information will be available about the status of reads, writes, unsolicited input, TX frames (sent), and RX frames (received).

For ControlLogix devices, using this tool is essential as it highlights invalid addresses in the configuration. You can view the data directly in the data grid or save it to a file for further analysis. Additionally, you can configure a Tag in the Object Name field and click the Add button to display a menu, select that object, and include it in the monitoring.

 If you click the Settings button in the configuration dialog, you can select which message types and modules to display. 

Error Codes

For the Module Information and Property Watch tools, there are negative error codes that represent specific messages that can help to find the root cause of the error.

• On Module Information, refer to the Last Error Code column.

• On Property Watch, refer to @Device.Channel.ChannelName.Status.

The following table lists all Error codes with their descriptions:

In this section: