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).
References & Support
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 |