PRODUCTS > Serial Device Servers > NCOM-112


 Products Manual


NCOM-112 - 1-Port Serial to Ethernet Serial Device Server (RS-422/485)


  • Adds a virtual serial COM port via network connection
  • Supports virtual serial port driver for Windows
  • Supports pair connection mode for connecting two serial device servers over a network without a PC
  • Easy-to-use Windows utility software for easy configuration and installation
  • 10/100Mbps Ethernet with auto-detection
  • Configuration via web console interface or utility software
  • Windows utility software automatically finds NCOM devices on the network
  • Firmware upgradable for future firmware revisions
  • LEDs indicating Ethernet port’s link and speed statuses
  • LEDs indicating serial port’s TxD and RxD statuses
  • Supports “reset” button for system reset and restoring to default settings
  • Data rates: 300bps to 921.6kbps
  • Built-in 15kV ESD protection for all serial signals
  • Fully supports “COM Port Control” protocol known as RFC2217
  • Supports network protocols such as TCP or UDP Client/Server
  • Supported RS-422, RS-485 4-wire signals: TxD-, TxD+, RxD+, RxD-
  • Supported RS-485 2-wire signals: Data-, Data+
  • Auto transmit buffer control for 2-wire RS-485 half-duplex operation
  • Termination resistors installed on-board
  • Supports Windows XP to 10, Windows Server 2003 to Server 2016


Ethernet 10/100Mbps
Connector RJ-45 connector
Protection Built-in 1.5kV magnetic isolation
Serial Interface
Interface RS-422/485
Number of Ports 1
Connector DB9 male
Max. Speed 921.6kbps for transmit & receive
RS-422 Signals TxD-, TxD+, RxD+, RxD-, GND
RS-485 Signals 4-wire TxD-, TxD+, RxD+, RxD-, GND
2-wire Data-, Data+, GND
RS-485 Data Direction Automatic RS-485 direction control
Protection 15kV for all signals
Serial Communication Parameters
Data Bits 5, 6, 7, 8
Parity None, odd, even, mark, space
Stop Bit 1, 1.5, 2
Flow Control Hardware (RTS, CTS)
Software Features
Utility NCOM management tool for Windows OS
OS Driver Support Virtual serial port driver for Windows OS
Configuration Web console, Windows utility
Power Input 9VDC to 48VDC
Power Consumption 95mA@12VDC, 38mA@48VDC
Operating Temperature 0 to 55°C (32 to 131°F)
Storage Temperature -20 to 75°C (-4 to 167°F)
Operating Humidity 5% to 95% RH
Safety Approvals CE, FCC
Casing Plastic
Dimensions 106mm × 97mm × 32mm (L × W × H)
Weight 110g