ET-2242U CR: Module 2 cổng Ethernet Modbus TCP 16 kênh đầu ra số DO

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ET-2242U CR Ethernet I/O Module with 2-port Ethernet Switch and 16-ch Sink/Source-type DO (RoHS)

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ET-2242U CR: Module 2 cổng Ethernet Modbus TCP 16 kênh đầu ra số DO


  • Built-in Web Server
  • Support Modbus TCP/UDP Protocols
  • Powerful 32-bit MCU Handles Efficient Network Traffic
  • 2-port Ethernet Switch (LAN Bypass) for Daisy-Chain Wiring
  • Dual Watchdog
  • I/O Pair Connection (Push and Polling)
  • Supports web configuration and firmware update via Ethernet
  • Built-in DO
    • ET-2242: 16 sink-type digital output channels
    • ET-2242U: 16-ch digital output selectable as either sink- or source-type via wire connection
  • LED Display to Indicate the I/O status
  • Wide Operating Temperature Range: -25 ~ +75 °C


Providing various digital I/O functions, the ET-2242/2242U 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-2242/2242U module perfect integration with the HMI, SCADA, PLC and other software systems.

The ET-2242 provides 16 Sink-type Digital Output channels and each channel can drive 650 mA load, while ET-2242U provides 16 sink- or source-type Digital Output channels by wire connection and each channel can drive 500 mA load. There are configurable power-on and safe values for Digital Output. With 2 Ethernet ports, the ET-2242/2242U 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. 

The module can be used to create DI to DO pair-connect through the Ethernet. After configuration, the ET-2242/2242U 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.


CPU Module
CPU 32-bit ARM
Watchdog Timer Yes, Module, Communication (Programmable)


EMS Protection
EFT (IEC 61000-4-4) ±4 kV for Power Line
ESD (IEC 61000-4-2) ±8 kV Contact for Each Terminal and
±15 kV Air for Random Point
Surge (IEC 61000-4-5) ±2 kV for Power Line


LED Indicators
Status 1 x Power and Communication
1 x Ethernet
16 x I/O


Digital Output
Channels 16
Type Push-Pull
Sink/Source (NPN/PNP) Sink/Source
Load Voltage +3.5 V ~ +80 V
Max. Load Current 500 mA/Channel


COM Ports
Protocol Modbus TCP, Modbus UDP


Ports 2 x RJ-45, 10/100 Base-Tx, Switch Ports
Security Password and IP Filter


Reverse Polarity Protection Yes
Consumption 24 VDC: 2.3 W Max.
48 VDC: 2.6 W Max.
Powered from Terminal Block +10 ~ +48 VDC


Dimensions (mm) 33 mm x 127 mm x 99 mm (W x L x H)
Installation DIN-Rail or Wall mounting


Operating Temperature -25 ~ +75 °C
Storage Temperature -30 ~ +80 °C
Humidity 10 ~ 90% RH, Non-condensing



Data sheet



Ordering information

ET-2242U     CR  Ethernet I/O Module with 2-port Ethernet Switch and 16-ch Sink/Source-type DO (RoHS)

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