ET-2251-32 Ethernet I/O Module with 32-ch DI

ET-2251-32 is a 32-channel digital input (Wet/Dry Contact) module and each channel can function as a 32-bit counter. 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 VDC I/O isolation to enhance noise protection capabilities in industrial environments.

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.

ET-2251-32 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.

ET-2251-32 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.

• Web Server for Configuration
• Support Modbus TCP/UDP, MQTT, and SNMP V2c Protocols
• 2-port Ethernet Switch (LAN Bypass) for Daisy-Chain Wiring
• Supports Dual-watchdog
• I/O Pair Connection (Push and Pull)
• Built-in I/O
  • 32-ch DI (Wet/Dry)
• LED Display to Indicate the I/O Status

ET-2251-32 Ethernet Digital input module, 32 channel datasheet

• Factory Automation
• Machine Automation
• Building Automation
• Remote Diagnosis & Maintenance
• Testing Equipment