Langage 4DCommandesCommunicationsVersion: 20 R7CommunicationsGET SERIAL PORT MAPPING ( tabNums ; tabLibellés )RECEIVE BUFFER ( varRéception )[RECEIVE PACKET ( {docRef ;} réceptVar ; stopCarRECEIVE RECORD {( laTable )}RECEIVE VARIABLE ( variable )SEND PACKET ( {docRef ;} paquet )SEND RECORD {( laTable )}SEND VARIABLE ( variable )SET CHANNEL ( port ; param ) SET CHANNEL ( opération ; nomFichier )SET TIMEOUT ( secondes )USE CHARACTER SET ( filtre {; typeFiltre} )