The Modbus Serial Device Server as an interface between Modbus serial devices and computer hosts running Modbus/TCP on Ethernet networks. Fully compliant with Modbus/TCP, the Modbus Serial Device Server offers a convenient solution to connect existing devices or controllers running Modbus serial protocol (Modbus/ASCII or Modbus/RTU) to an Ethernet network.
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| Model name | EKI-1221D | EKI-1222D | EKI-1221 | EKI-1222 | EKI-1224 | ADAM-4572 |
| Description | 1-port Modbus Gatewaywith Integrated CascadingEthernet | 2-port Modbus Gatewaywith Integrated CascadingEthernet | 1-port Modbus Gateway | 2-port Modbus Gateway | 4-port Modbus Gateway | 1-port Modbus Gateway |
| No. Ethernet Ports | 2 | 2 | 2 | 2 | 2 | 1 |
| No. Serial Ports | 1 | 2 | 1 | 2 | 4 | 1 |
| Ethernet Interface | 10/100Mbps | |||||
| Ethernet Feature | Daisy-Chain Connectivity | Dual Ethernet Redundancy | – | |||
| Configuration | Windows Configuration Utility, Web-Browser Console | Windows utility | ||||
| Operating mode | Modbus RTU Master, Modbus RTU Slave, Modbus ASCII Master, and Modbus ASCII Slave modes | |||||
| Baud rate | 50 bps ~ 921.6 kbps | |||||
| Certifications | Class I Division 2 Groups ABCD T4, FCC, CE | FCC, CE | ||||