1-port Modbus Gateway with Integrated Ethernet Cascading
  • Provides 2 x 10/100 Mbps Ethernet ports for Daisy Chian connectivity
  • Integration of Modbus TCP and Modbus RTU/ASCII networks
  • Supports Ethernet auto-bypass function
  • Master mode supports 32 TCP slaves at the same time
  • Slave mode supports up to 16 TCP masters
  • Supports mapping Modbus slave ID option
  • Auto searching Modbus slave ID over configuration utility
  • Mounts on DIN-rail, wall or panel
  • Class I, Division 2 certification
Class 1 Div 2
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The EKI-1200 series Modbus gateways are bi-directional gateways for integrating new and existing Modbus/RTU and Modbus/ASCII serial devices to newer TCP/IP networked-based devices. The EKI-1221D/1222D feature two Ethernet ports with one IP address for easier network wiring. One port can be used to connect to the network, and the other port can be used to connect to another Ethernet device or another EKI-1221D/1222D. They provide a simple and cost-effective way to bring the advantage of remote management and data accessibility to thousand of devices that can not connect to a network. The EKI-1221D/1222D provide a feature that can allow users to select master or slave operation mode for each serial port. They not only allow an Ethernet master to control serial slaves, but also allow serial masters to control Ethernet slaves.


Part Number EKI-1221D-AE
Connector Ethernet RJ45
Serial DB9
Ethernet Interface 10/100 Mbps
Ports 2
Serial Ports 1
Type RS-232/422/485
Software Baud Rate 50 ~ 921.6 Kbps
Driver Windows 2000/XP/Vista/7 (x86 and x64)
Operating Mode Modbus RTU
Modbus ASCII