EtherNet/IP to IEC60870-5-104 Client Communication Gateway


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The ProLinx EtherNet/IP to IEC60870-5-104 Client gateway creates a powerful connection between an EtherNet/IP network and IEC 104 server devices. The stand-alone, DIN-rail-mounted protocol gateway provides one Ethernet port.

The EtherNet/IP protocol supports the Explicit Messaging implementation of the protocol (PCCC-type messages). User-configurable as both a Client and a server, the EtherNet/IP port is a very powerful data transfer tool.

The IEC60870-5-104 Client protocol implementation allows the transfer of monitor and control data to and from remote servers.

Funktionen und Vorteile

Powerful network integration

  •  Allows movement of data between dissimilar networks using two communication protocols on one gateway
  •  Protocols share access to a common memory database to exchange data between networks
  •  View diagnostic data for both networks from a single configuration/debug port

EtherNet/IP Client and Server

  •  Integrate with widely available Rockwell Automation and third-party products and services worldwide
  •  Client/server Explicit Messaging communication supported (PCCC-type messages)
  •  Five server connections
  •  One client connection provides up to 100 commands

IEC 60870-5-104 Client

  •  Four connections for remote servers
  •  Supports up to two Common ASDU Addresses per server
  •  Supports monitored and control data
  •  Supports up 500 commands to the remote servers
  •  Timestamp events are available to the other protocol through the mailbox feature

Technische Daten

Internal Database

The ProLinx module contains an internal database that consists of areas for application data, status information, and configuration information.

The internal database is shared between all ports on the module and is used as a conduit to pass information from a device on one network to one or more devices on another network.

Application Data Area

The data area is used to store and retrieve data by the protocol drivers and for data exchange between protocols. The database is used as a source for write commands to remote devices and holds data collected from the remote devices. Commands defined in the configuration file (stored in the configuration data area) control how the data is to be handled in the database.

Status Data Area

This area is used to store error codes, counters, and port status information for each port.

Configuration Data Area

This area contains module configuration information such as port configuration, network information, and command configuration. This configuration file is downloaded to, or uploaded from, this area.




Power Supply

24 VDC nominal
18 to 32 VDC allowed
Positive, Negative, GND Terminals
2.5 mm screwdriver blade

Current Load

500 mA max @ 32 VDC max

Operating Temperature

-4° F to 122° F (-20° C to 50° C)

Storage Temperature

-40° F to 185° F (-40° C to 85° C)

Relative Humidity

5% to 95% (with no condensation )


 5.20 in H x 2.07 in W x 4.52 in D (13.2 cm x 5.25 cm x 11.48 cm)
 5.20 in H x 2.73 in W x 4.52 in D
(13.2 cm x 6.934 cm x 11.48 cm)

LED Indicators

Power and Module Status
Application Status
Serial Port Activity
Serial Port Error Status

Configuration Serial Port

DB-9M RS-232 only
No hardware handshaking

Ethernet Port (Ethernet modules only)

10Base-T half duplex RJ45 Connector
Link and Activity LED indicators
Electrical Isolation 1500 V RMS at 50 Hz to 60 Hz for 60 s, applied as specified in section 5.3.2 of IEC 60950: 1991
Ethernet Broadcast Storm Resiliency = less than or equal to 5000 [ARP] frames-per-second and less than or equal to 5 minutes duration

Application Ports

Modbus Plus Connector
Two DB9 Female Standard Modbus Plus connectors

Serial Port Isolation

2500 V RMS port signal isolation per UL 1577
3000 VDC min. port to ground and port to logic power isolation

Shipped with Each Unit

Mini-DIN to DB-9M serial cables
4 ft RS-232 configuration cable
2.5mm screwdriver
CD (docs and Configuration utility)
RS-422/485 DB-9 to Screw Terminal Adaptor (1 or 4, depending on ports)


DFNT-104C Datasheet 232,49 kB Zuletzt geändert 25.06.2013
DFNT Protocol Manual 2,03 MB Zuletzt geändert 24.07.2013
ProSoft Configuration Builder (PCB)
104C Protocol Manual 1,80 MB Zuletzt geändert 23.05.2014
ProLinx Reference Guide 1,52 MB Zuletzt geändert 12.11.2014


DFNT Protocol Specification

The EtherNet/IP protocol driver supports the Explicit Messaging implementation of the protocol. User-configurable as both a Client and a Server, the EtherNet/IP port is a very powerful data transfer tool.

Protocol Specifications

The EtherNet/IP protocol is one of the primary connectivity tools to the different Rockwell Automation platforms. The Explicit Messaging aspect of the protocol (only) has been implemented in the ProLinx units to provide the data transfer link between the ProLinx units and the Rockwell Automation hardware.

General Protocol Information


Explicit Messaging supported


125 word read and write data lengths
Floating point data supported

EtherNet/IP Server Specifications

In Server mode, the module accepts commands from one or more clients to read/write data stored in the module's internal registers.

EtherNet/IP Server Specifications


Five independent TCP server sockets permit remote clients to interact with all data contained in the module.

Data File

Data Table File Start - Fixed at N10
Data Table File Size - 100 or 1000 words

CIP Services Supported

0x4C - CIP Data Table Read
0x4D - CIP Data Table Write

EtherNet/IP Client Specifications

In Client mode, the module controls the read/write data transfer between the gateway and other EtherNet/IP devices. Data transfer can be initiated and executed without any ladder programming being required in the Rockwell Automation hardware.

EtherNet/IP Client Specifications


One client

Command List

Support for 100 commands, each configurable for command, IP address, register to/from addressing and word/bit count.

Polling of command list

User configurable polling of commands, including disabled, continuous and on change of data (write only).

EtherNet/IP (Explicit Messaging) Compatible Devices

List of Rockwell Automation material that support EPIC:

  • PLC5/E rev C/N, D/E, E/D
  • SLC5/05 series A, OS503 frn4
  • 1785-ENET Series A, rev D
  • Interchange V6.2
  • MicroLogix 1100/1400/ANY via 1761-NET-ENI
  • CompactLogix 1768-L43/L45 via 1768-ENBT
  • CompactLogix 1769-L32E/L35E/ANY via 1761-NET-ENI
  • RSLinx Gateway V1.7+
  • ControlLogix 1756-ENET/ENBT/EN2T

104S Protocol Specification

The 104S module accepts commands from an attached master unit on the network and generates unsolicited messages.

Protocol Specifications

Operating in the Server mode, the protocol driver can accept commands from one client at a time to read/write data stored in the module's internal registers. It supports redundant applications with two simultaneous client connections. However, it only transfers data to one of the clients at a time.

The 104S module acts as an input/output module between the IEC 60870-5-104 Ethernet network and many of the other serial and network protocols, as well as several proprietary interfaces.

General specifications include:


  • User-definable module memory usage
  • Protocol implementation conforms to the IEC 60870-5-104 specification with fully configurable parameters
  • SNTP (Simple Network Time Protocol) timestamping for detailed logging of data transactions


The 104S module accepts commands from an attached master unit on the network and generates unsolicited messages. These last sets of messages are either spontaneous or cyclic. Data transferred to the host is derived from the module's internal database. The remote master device can control data in the database and hence the devices connected using the other protocol in the module using standard control messages supported in the protocol. The remote master device uses the fully-configured databases in the module to control outputs and monitor inputs.

IEC 60870-5-104 Server

Configurable Parameters

Override StartDT
Clear queue on close
t1 timeout set value
t2 timeout set value
t3 timeout set value
k (maximum queue)
w (latest ack threshold)
Time DB Offset


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