ET-2252 Ethernet I/O Module with 2-port Ethernet Switch, Universal 16-ch DIO (DI: Sink, DO: Source, 450 mA max.)

The ICP DAS ET-2252 is a 16-channel universal DIO module. Each channel can be set as a digital input or output, while each DO can drive a 450 mA load. The module includes a built-in 2-port Ethernet switch, facilitating a Daisy-chain topology. This feature offers flexibility in device configuration, simplifies installation, and reduces infrastructure costs. Additionally, the module provides EMS (EFT/ESD/Surge) protection and 3000 V_DC I/O isolation to enhance noise protection capabilities in industrial environments. It also offers configurable DO power-on value and safe value settings.

Moreover, the module supports I/O Pair-Connection functionality, allowing the establishment of DI-to-DO pairing connections with the remote module via Ethernet. Once configured, local DI data can be written to remote DO channels in Push mode via Modbus TCP. Alternatively, pull remote DI to local DO.

The ET-2252 supports the MQTT protocol, serving as a publisher and subscriber of messages. When connected to an MQTT broker server, it can publish real-time statuses of I/O in the form of topics and receive messages from subscribed topics. If a disconnection occurs between the module and the broker during communication, its mechanism for reconnecting can automatically restore the connection. Additionally, its Keep-Alive interval mechanism ensures a continuous connection with the broker.

The ET-2252 supports the SNMP V2c specification, enabling it to transmit both module and I/O information to SNMP network management devices or software (SNMP Network Management Software). This allows administrators to monitor module status in real-time. Additionally, if the Trap function is enabled, the module can proactively send messages to administrators when there are changes in I/O statuses or during restarts, keeping them informed of channel statuses at all times.

This module supports dual power inputs (+10 to +48 V_DC) for enhanced redundancy. If one source becomes inactive or is interrupted, the other immediately takes over to ensure uninterrupted operation in critical environments.