IP-based Ethernet I/O Module with 2 Ethernet ports for daisy chain, 16-ch Wet/Dry Contact Digital Input. Supports Modbus TCP/UDP Protocols and features Built-in Web Server for Easy Configuration. Supports I/O Pair Connection. Wide Operating Temperature Range: -25 ~ +75 °C (-13F ~ 167F).
Providing various digital I/O functions, the ET-2251 module is an IP-based Ethernet I/O monitoring and control module. The module can be remotely controlled through a 10/100 M Ethernet network by using Modbus TCP/UDP protocol. Modbus has become a de facto standard communications protocol in industry, and is now the most commonly available means of connecting industrial electronic devices. This makes the ET-2251 module perfect integration with the HMI, SCADA, PLC and other software systems.
The ET-2251 provides 16 wet contact & dry contact Digital Input channels. With 2 Ethernet ports, the ET-2251 allows daisy chain connection which permits the flexibility in locating devices, eases installation and lowers infrastructure costs. It features 8 kV ESD protection, 4 kV EFT protection, 3 kV surge and 3000 VDC I/O isolation are also provided to enhance noise protection capabilities in industrial environments. Each input channel can be used as a 32-bit counter.
The module can be used to create DI to DO pair-connect through the Ethernet. After configuration, the ET-2251 module can poll the status of the local DI channels and then use the Modbus/TCP protocol to continuously write to the remote DO devices. It is equipped with removable terminal block connector for easy and robust wiring in industrial situations, and features a powerful 32-bit ARM MCU to handle efficient network trafficking.
- Built-in Web Server for Easy Configuration
- Support Modbus TCP/UDP Protocols
- Powerful 32-bit MCU Handles Efficient Network Traffic
- 2 Ethernet Ports (LAN Bypass) for Daisy-Chain Wiring that Saves Your Cabling Costs
- Dual Watchdog
- I/O Pair Connection (Push and Polling)
- Easy Web configuration and Firmware Update via Ethernet
- 16 Wet Contact & Dry Contact Digital Input Channels
- LED Display to Indicate I/O status
- Wide Operating Temperature Range: -25 ~ +75 °C (-13F ~ 167F)
Reference & Support
|Ethernet Port||2 x RJ-45, 10/100 Base-TX, Swtich Ports|
|Protocol||Modbus TCP, Modbus UDP|
|Security||Password and IP Filter|
|I/O Pair Connection||Yes (Push, Polling)|
|Dual Watchdog||Yes, Module, Communication (Programmable)|
|for System Running||Yes|
|for Ethernet Link/Act||Yes|
|for DI/DO status||Yes|
|ESD (IEC 61000-4-2)||±8 kV Contact for Each Terminal and ±16 kV Air for Random Point|
|EFT (IEC 61000-4-4)||±4 kV for Power Line|
|Surge (IEC 61000-4-5)||±3 kV for Power Line|
|Reverse Polarity Protection||Yes|
|Powered from Terminal Block||+10 ~ +30 VDC|
|Dimensions (L x W x H)||127 mm x 33 mm x 99 mm|
|Installation||DIN-Rail or Wall mounting|
|Operating Temperature||-25 ~ +75°C|
|Storage Temperature||-30 ~ +80°C|
|Humidity||10 ~ 90% RH, Non-condensing|
|Contact||Wet Contact/Dry Contact|
|On Voltage Level||+5 VDC ~ +50 VDC|
|Off Voltage Level||+1 VDC Max.|
|Input Impedance||7.5 kΩ|
|Counters||Max. Count||4,294,967,295 (32 bits)|
|Max. Input Frequency||3 kHz|
|Programmable Digital Filter||1 ~ 6500 ms (0.08 Hz ~ 500 Hz)|
|Overvoltage Protection||+70 VDC|
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