# Set up run-time diagnostics

In the Diagnostics List Setup editor, set up when to print messages at run time, the graphic display to use and when to open it, and the maximum number of messages to store.

Tip: | Diagnostic error messages may appear truncated if they are too long for the diagnostics window. To ensure that error messages are shown in full, use the FactoryTalk Diagnostics Viewer to show these messages on the desktop terminal and at design time. For applications that run on PanelView Plus 7, PanelView Plus 6, PanelView Plus, or PanelView Plus CE terminals, configure the FactoryTalk Diagnostics Viewer to accept messages from Windows CE devices. In the Tools menu, click Diagnostics Setup, and then select Message Routing to select the check box for this option. Click Help in the Message Routing pane for more details.

## To change the setup of a Diagnostics List

1. Double-click the Diagnostics List Setup icon to open the editor.
2. In the Log messages to printer when section, specify the types of messages you want to print, if any. Be sure you have set up a printer on the run-time terminal.
3. In the Runtime display section, specify the graphic display to use for diagnostics messages at run time and what events, if any, will open that display automatically.
4. Specify the maximum number of messages to store.

## See also

Set up Diagnostics for development

How the diagnostics list works at run time

Create diagnostics lists

Create Diagnostics buttons

Create Goto Display buttons