Can you tell me what information is displayed on the 7 segment LED of the SMARTDAC+ GX/GP series' expansion module?

It displays the unit number (00–06) and error code. If “Fx” appears, servicing is required. In that case, please contact representative from whom you purchased the product. For details, see section 5.2 Troubleshooting “Expansion Module Error Codes” in the User's Manual (IM 04L51B01-01EN).