Versatile Test Tool

GUI Client for IEC 60870-5-104


  • Simple and easy-to-use IEC 60870-5-104 GUI client tool
  • Based on our lib60870.NET library. Can run on .NET/Windows and Mono/Linux
  • Supports all monitoring, control and parameter messages
  • Compatible with latest versions of the IEC 60870-5-104 standard
  • Support TLS encryption and authentication according to IEC 60870-5-7

Freeware Edition

The Freeware Edition provides a lot of useful information to get an overview of the protocol and the communication between the client and an IED.


  • Supports sending all system commands (C_CI_NA_1, C_RD_NA_1, C_CS_NA_1 ...)
  • Detailed telegram view to see order of events an getting advanced insights into data flow and potential communication problems.
  • Information object view that shows the current object of all information objects received in monitoring direction
  • Displays APCI and control flow information
  • Automatic reconnect


  • Windows 7, Windows 8, Windows 10, .NET Framework 4
  • Ubuntu 16.4, Mono Framework

Download the Freeware Edition 1.1

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Professional Edition (COMING SOON)

The Professional Edition comes with all features of the Freeware Edition. In addition the following features are supported.


  • Sending all process command message types in control direction (C_SC_NA_1, C_DC_NA_1, C_RC_NA_1, C_SE_NA_1, C_SE_NB_1, C_SE_NC_1, C_BO_NA_1  with or without CP56Time2A time stamp)
  • Sending parameter and parameter activation commands.
  • Sending monitoring (M_XX) messages in reverse direction
  • Freely sending all kinds of APCI commands
  • Modifying flow control behavior for testing
  • Disable/Enable transmission of test messages
  • Save information object list as CSV or Excel sheet
  • Save received telegrams to log file or Excel sheet
  • Copy log to clipboard or log to file


  • Windows 7, Windows 8, Windows 10, .NET Framework 4.0
  • For Linux versions please contact us.