Uthotho lwe-R3U lwe-PLC sisilawuli esinocwangciso esiphucukileyo esilungiselelwe ukubonelela ngolawulo oluthembekileyo nolusebenzayo lokuzisebenzela kwimizi-mveliso eyahlukeneyo. Inika uluhlu olubanzi lweemodeli ezinolungelelwaniso lwe-I/O olwahlukileyo kunye nobuchule bokusebenza ukuze buhambelane neemfuno ezahlukeneyo.
Uluhlu lwe-R3U lwe-PLC lwakhiwe nge-hardware enamandla kwaye lubonisa i-interface yeprogram esebenzisekayo, iyenza ifanelekele imisebenzi enzima yokuzenzekelayo. Idibanisa ukomelela, ukuguquguquka, kunye nokulula kokusetyenziswa, iyenza ibe lolona khetho lufanelekileyo kwiinkqubo ezizisebenzelayo kwimizi-mveliso.