https://www.unipi.technology/unipi-neuron-l513-p106?categoryId=2
“9 analog outputs (AO) feature two modes - 0-10V DC voltage or 0-20mA direct current. AI serves for control of devices with analog input, such as three-way valves, lighting dimmers etc. Group 2 analog outputs of the M503 (AO2.1-2,4) feature 0-10V voltage only.”
From the above we understood that all the AO have the option to switch to current...