Modbus TCP Ethernet Expansion Unit with 8 slots


Modbus TCP Ethernet Expansion Unit with 8 slots

  Price:  $1,099.00  

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  • Two Ethernet Ports for Daisy-Chain Topology
  • Supports Modbus TCP
  • Supports Modbus RTU/ASCII
  • Supports Modbus TCP to RTU Gateway
  • Auto Configuration
  • 8 I/O Slots for I-8K and I-87K Series Modules
  • Operating Temperature: -25 ~ +75°C



ET-8KP8-MTCP series is a Modbus TCP I/O expansion unit to expand I-8K and I-87K series I/O modules over the Ethernet for industrial monitoring and controlling applications. It offers two Ethernet switch ports for daisy-chain topology. The daisy-chain feature allows ET-8KP8 to connect in series to each other or other Ethernet devices. Users can easily simplify the cabling and save installation space with the feature. It is designed to be used in harsh and noisy environment, so the hardware is manufactured with wide power input range (10 ~ 30 VDC), isolated power input and can operate under wide temperature (-25 ~ +75°C).

There are more than 90 I/O modules supported with the unit, including analog input/output, digital input/output, DI counter modules. To simplify installation and maintenance of I/O modules, it provides many useful features, such as: auto configuration, LED indicators for fault detection, dual watchdog to keep alive, programmable power on and safe values for safety. Modbus is a very wide known protocol in the industrial manufacturing and environment monitoring fields. Many SCADA software, HMI and PLC has builtin driver to support Modbus devices. Besides, we also provide SDK on different platforms, such as Windows XP, Window CE 5.0/6.0, Linux, MiniOS7. Therefore, it is very easy to integrate remote I/O to customer’s applications.

Reference & Support


Type 5 x Digit 7 Segment LED Display
LED Indicators
Status 1 x Run, 1x Module offline, 1 x WDT, 1 x Power
I/O Expansion
I/O Type I-87K, I-8K Series
Slots 8
COM Ports
Ports 1 x RS-232 (Console)
Protocol Modbus RTU/ASCII Slave
Push Button 4
Ports 2 x RJ-45, 10/100 Base-TX
Protocol Modbus TCP Slave, Modbus TCP to RTU Gateway
Input Range +10 ~ 30 VDC (1 kV Isolated)
Redundant Power Inputs Yes
Consumption 2.4 W
Dimensions (mm) 312 x 132 x 111 (W x L x H)
Installation DIN-Rail, Wall mounting
Operating Temperature -25 ~ +75°C
Storage Temperature -30 ~ +75°C
Humidity 10 ~ 90% RH, Non-condensing

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