The EKI-1521-CE from Advantech is a 1-port serial device server designed to connect RS-232/422/485 serial devices—like PLCs, sensors, and barcode readers—to Ethernet networks. It’s part of Advantech’s EKI-1500 series, known for robust industrial communication.

 Communication & Protocols

• Serial Interface: 1 × RS-232/422/485 (DB9 male)
• Ethernet Ports: 2 × 10/100 Mbps RJ45 (for LAN redundancy)
• Baud Rate: 50 to 921.6 kbps
• Operation Modes:
  • Virtual COM (COM port redirection)
  • TCP/UDP server and client
  • Peer-to-peer connection

 Power & Protection

• Input Voltage: 12–48 VDC (redundant dual inputs)
• Power Consumption: ~3.2 W
• Isolation:
  • Serial to Ethernet: 2 kV
  • Serial to Power: 2 kV
  • Ethernet to Power: 1.5 kV
• ESD Protection: 15 kV for all serial signals
• Surge Protection: 4 kV line-to-ground