Model TC3400/TC3420

Serial-to-Ethernet Converter (10BaseT)

Product or Application Questions (click here)

  • Converts RS-232, 422, or 485 to 10Base-T Ethernet (IEEE 802.3)
  • Point to Point (TC3400)
  • Point to Multi-Point (TC3420)
  • Data Rates up to 57.6 Kbps
  • Changeable Network Settings
  • Supports Full RS-232 Handshaking
  • Nine Diagnostic LEDs
  • Local/Remote Loopback & Test Signal Generator (TC3420)
  • High Temp (-20C to 70C) Optional


The TC3400 Serial-to-Ethernet Converter series converts RS-232, RS-422 or RS485 asynchronous data to packets for point-to-point transmission between local and remote TC3400s over an Ethernet Network.

The Model TC3400 is for point-to-point network applications, the Model TC3420 is for point-to-multipoint (poll/response). Both models are transparent to data or communications protocols and the TC3420 can be configured in bus, ring or redundant ring topologies.

Compatible with all popular Ethernet Switches, the TC3400 series supports data rates up to 57.6 Kbps. A Web-based user interface (i.e. browser) is provided to view or change network settings. It supports full handshaking for RS-232 interfaces (DCD, RTS, CTS, DTR and DSR). It is often used for poll/response networks in Utility, SCADA, Traffic Control and Process Control LAN networks.


TC3400 Specifications
RS-232/RS-422/RS-485 Connector DB9F
Data Rate up to 57.6Kbps
Ethernet (10Base-T) RJ45F, 10Mbps
Dry Contact Normal Open
Visual Indicators
System Status PWR A, PWR B, VccA, VccB, Alarm, Link, Sync, Activity
Electrical Signal Status TX, RX, CTS, RTS, DSR, DTR
Standard 12VDC @ 500mA
Optional 24VDC, -48VDC, or 115/230VAC (with external power cube)
Operating -100C to 500C
Hi-Temp (optional) -20 to 70C
Storage -400C to 900C
Humidity 95% non-condensing
Physical (Standalone/Wall Mount Unit)
Height    (3.53 cm) 1.4"
Width (18.14 cm) 7.1"
Depth (16.57 cm) 6.5"
Weight (544 gm) 1.2 lbs

 Typical Application (Application Questions)

The TC3400 Series is ideal for poll response networks often used in Utility, SCADA, Traffic Control and Process Control LANs to link RS-232 or RS-485 RTUs and PLCs to a Host CPU. It is also ideal for connecting surveillance cameras with RS-232 interfaces over Ethernet.

SONET, Security, fiber Optic Modem, Multiplexer, Converter, Video, SONET, LAN, Ethernet, Scada, ITS, Security, Teleconferencing