Distributed IO is an industrial automation control device, mainly applied in fields such as the Internet of Things, smart home, power monitoring, and industrial production lines. It realizes the automation management of the production process through remote data collection and control. It adopts a master-slave hierarchical architecture, with the host responsible for protocol conversion and communication, and the slave performing signal collection and conversion. It supports standard protocols such as Modbus RTU/TCP. It can achieve networking communication with PLC, HMI and other devices via Ethernet or RS485.
This device is composed of multiple modular units, featuring a small size, stackable rail installation and multi-level cascading expansion. A typical model, such as M244, supports 4 channels of digital input and output. The module integrates dual watchdogs for software and hardware, full-port anti-reverse connection and ESD protection functions. It is suitable for a wide voltage range of 9-24VDC and a wide temperature range of -25 to 85°C. It also has built-in lightning protection isolation technology. Using single-cable connection instead of traditional multi-wire wiring can reduce PLC resource occupation and construction complexity, and is widely used in data center monitoring, energy management and other scenarios.