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).

ET-2251

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).

  Price:  $259.00  

Features

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)

Specifications

System
CPU 32-bit ARM
Communication
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)
LAN Bypass Yes
LED Indicators
for System Running Yes
for Ethernet Link/Act Yes
for DI/DO status Yes
2-Way Isolation
Ethernet 1500 VDC
I/O 3000 VDC
EMS Protection
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
Power Requirements
Reverse Polarity Protection Yes
Powered from Terminal Block +10 ~ +30 VDC
Consumption 2.9 W
Mechanical
Dimensions (L x W x H) 127 mm x 33 mm x 99 mm
Installation DIN-Rail or Wall mounting
Environmental
Operating Temperature -25 ~ +75°C
Storage Temperature -30 ~ +80°C
Humidity 10 ~ 90% RH, Non-condensing

I/O Specifications

Digital Input/Counter
Channels 16
Contact Wet Contact/Dry Contact
Sink/Source (NPN/PNP) Sink/Source
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

Related Products