Epson RC620 Manual page 208

4. Troubleshooting (PROFIBUS DP)
(3) Select [Protocol]-[Diagnostic] from the applicomIO Console application menu. Click
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the magnifying grass icon on the [Diagnostic] dialog box.
Then, select the slave you want from the device tree in the left side of the window.
The window changes as shown below.
To check the device condition in detail, click <Diagnostic> in [Equipment
information] in the right side of the window. If an error occurs, the information is
displayed in red.
RC620 Option Fieldbus I/O Rev.8