Rockwell Automation 9323-S5500D A.I. SERIES MICROLOGIX 1000 AND PLC-500 SOFTW - Manual (Page 199)

Using the Database Editor
9-9
2. Cursor or tab to the Device Code field. The system prompts you for a device code
for the input or output.
Type the device code if you know it and skip to step 5 , otherwise, press [Ins] and
continue with the next step.