2 Port SCADA Serial Server - EtherPoll-2

Two Port EtherPoll® 2 Port SCADA Serial Server
"An Ethernet Multi-drop Modem"

2 port SCADA ethernet serial server for Modbus, DNP, and other asynchronous SCADA Protocols

  • Configuration via web browser, telnet, or direct connection
  • Ideal for serial SCADA polling IP networks
  • Ideal for Intranet or the Internet M2M Connections
  • Individually configured ports
  • Configuration via web browser, telnet or direct connection
  • Enable SCADA async serial polling via Ethernet
  • SNMP agent functionality
  • Protocol independent; works with any byte-oriented asynchronous protocol
  • Each serial port connects up to 32 remote IP addresses over Ethernet LAN/WANs
  • RS232 interface speeds to 230 Kbps
  • Two independent serial ports
  • -40ºC to -75ºC operational temperatures
  • The EPL-2 transports multi-drop serial poll/response data over Ethernet/IP networks
  • Works with Modbus, DNP3, IEC 60870-5-101, and most async point-to-point or multi-drop 8-bit protocol
  • Redundant hosts for backup sites are simple with the EPL-2 EtherPoll
  • Compatible with single port EtherPoll units


Indicators (front panel)
Lan Connection
Data Port

Download the Manual

Download a printable data sheet





The EPL-2 EtherPoll is a SCADA communications serial server that allows multi-drop devices to use Ethernet LANs. The EPL2 connects any async serial device through a LAN and between LANs via routers. The EPL-2 is designed specifically to support asynchronous polling protocols, such as Poll Select, Modbus, DNP3, IEC-60870-5-101, etc. The EPL-2 uses IP protocol, allowing the necessary data connection over a local LAN and across routed networks. The EPL-2 functions independently of the device protocol, allowing most 8 bit asynchronous protocols to be used with no configuration changes.

The EPL-2 EtherPoll maps data from a serial port to as few as one IP address to as many as 32 remote IP addresses. This feature makes it easy to have redundant host sites that will always receive the same poll responses as the master host site. If you have the objective of installing a backup host site or have a second site that always monitors the RTU responses, the EPL-2 makes it easy.

The EPL-2 Encrypted EtherPoll supports RS232 serial interface speeds up to 230 Kbps. Since it uses the UDP/IP protocol, overhead is much lower than it would be if TCP/IP were used, as there is no "session setup" or "session breakdown" with each connection. Up to 32 remote EPL-2s may be used with each host EPL-2.

The EPL-2 EtherPoll can be managed directly through the serial port as well as through the ethernet port. TCP/IP telnet or a web browser can be used.

Security features embedded in the EPL-2 EtherPoll include fine-grained configuration and management controls, as well as the ability to turn off remote management functions.

Instead of replacing your existing serial RTUs and SCADA system with ethernet RTUs, add the EPL-2 EtherPoll for a fraction of the cost. OEM manufacturers can design the EPL-2 into their products or use it as an add-on method to gain ethernet connectivity. DCB supplies the EPL-2 to many other companies and can provide custom firmware for specific applications.



Power, Status, Port Activity, LAN Connection, LAN Activity


DIP switch selection for serial port setup

Data Port

Interface: RS-422/485, RS-232, V.24, speeds up to 230,000 bps
Connector: DE-9P RS-232 (commonly known as a DB-9 PC connector)

LAN Connection

Interface: 10BaseT or 100BaseT, autoswitching


Front view of DCB EPL-2 EtherPoll
RS-232 Connector

Rear view of DCB EPL-2 EtherPoll
LAN Connectors