Change address command (aAb!)

Multiple SDI‑12 sensors can connect to a single SDI‑12 terminal on a data logger. Each device on a single terminal must have a unique address.

A sensor address is changed with command aAb!, where a is the current address and b is the new address. For example, to change an address from 0 to 2, the command is 0A2!. The sensor responds with the new address b, which in this case is 2.