Kuyo yonke isityalo sokuxuba i-asphalt, inxalenye ephambili yinkqubo yayo yokulawula, equka i-hardware kunye ne-software. Umhleli ongezantsi uya kukusa kuyilo oluneenkcukacha lwenkqubo yolawulo lwesityalo sokuxuba i-asphalt.
Into yokuqala esithetha ngayo yinxalenye yehardware. Isekethe ye-hardware ibandakanya amacandelo esekethe eziphambili kunye ne-PLC. Ukuze uhlangabezane neemfuno zokusebenza kwenkqubo, i-PLC kufuneka ibe neempawu zesantya esiphezulu, umsebenzi, isofthiwe ye-logic kunye nokulawula ukubeka indawo, ukwenzela ukuba ikwazi ukubonelela ngemisebenzi eyahlukeneyo yezityalo zokuxuba i-asphalt. Ukulawula ukuhamba kunika iimpawu zokulungela.
Emva koko, makhe sithethe ngenxalenye yesoftware. Ukuqulunqa isoftware yinxalenye ebaluleke kakhulu kuyo yonke inkqubo yoyilo, eyona nto isisiseko kukuchaza iiparamitha. Kwiimeko eziqhelekileyo, inkqubo yokulawula i-ladder ye-logic kunye neprogram yokuguqula i-debugging ihlanganiswe ngokwemigaqo yeprogram ye-PLC ekhethiweyo, kwaye inkqubo ehlanjululweyo idibaniswe kuyo ukugqiba ukulungiswa kwesofthiwe.