Issues in Multi-Device Network Architectures

hi
If using Edgex to control multiple UART devices, with each UART device connected to a single Raspberry Pi 3 (RP3), the setup would involve installing the device-uart service on each RP3. Meanwhile, core EdgeX services like edgex-coredata and edgex-metadata would be installed on the main computer. However, if the device-uart does not specify IP addresses for individual UART devices, how can each UART device be controlled?