DIGITAL INPUT8DI, 5~36V, passive / active input (NPN or PNP), built-in bi-directional optocoupler isolation. DIGITAL OUTPUT8DO, 5~36V, open-drain output, output load: 500mA per channel (MAX). Supports passive / active input, adopts Modbus RTU protocol with built-in protection circuits such as power isolation, magnetical isolation, resettable fuse, and TVS.
