Omron GRT1 - 11-2007 Operation Manual page 48

Functions Shared by all Units
2. Select the desired Slice I/O Unit from the list on the I/O Module Tab Page
and click the View Button.
3. Select the Error History Tab in the Maintenance Information Window.
The communications error history for the last four errors will be displayed,
as shown in the following window.
Section 2-3
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