1-w to RS-485 signal converter with buffer memmory and command structure - incl. firmware

We use the Maxim sensors with 1-w databus and transfers a series of such sensor data to a buffer memmory, from where the data must be collected via a RS-485 modbus. The 1-w databus (https://www.maximintegrated.com/en/design/technical-documents/tutorials/1/1796.html) can contain up to 20 temp sensors in series. Each module must have 4 such inputs.