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Enture OT Connector – IEC 104

Connect to RTUs and substation gateways using IEC 60870-5-104 — with stateful session management, event-driven acquisition, and full command/control support. 

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Enture® OT Connector
IEC 104

Unlock Real-Time Telemetry from RTUs and Substation Systems

Unlock Data from RTUs and Substation Gateways  Instantly 


IEC 60870-5-104 is the standard telecontrol protocol for power utilities, substations, and SCADA systems, extending IEC 101 over TCP/IP. Enture OT Connector – IEC 104 enables reliable, event-driven data acquisition and command/control across multiple RTUs, with stateful session handling built for the demands of grid and plant telemetry. 

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Specification 

    • IEC 60870-5-104 — TCP/IP-based telecontrol protocol (standard port 2404) 

    • APDU formats: I-format (information), S-format (supervisory), U-format (control) 

Category 

ASDU Types 

Single/Double Point Information 

M_SP_NA_1, M_DP_NA_1 

Measured Values 

M_ME_NA_1 (normalized), M_ME_NB_1 (scaled), M_ME_NC_1 (short float) 

Integrated Totals / Counters 

M_IT_NA_1 

Time-Tagged Events (CP56Time2a) 

M_SP_TB_1, M_DP_TB_1, M_ME_TE_1, M_IT_TB_1 

Single/Double Commands (Write) 

C_SC_NA_1, C_DC_NA_1 

Setpoint Commands (Write) 

C_SE_NA_1, C_SE_NB_1, C_SE_NC_1 

General/Counter Interrogation 

C_IC_NA_1, C_CI_NA_1 

Clock Synchronization 

C_CS_NA_1 


  • Single Commands (C_SC_NA_1) and Double Commands (C_DC_NA_1) 

  • Setpoint Commands — normalized, scaled, and short-float (C_SE_NA_1 / NB_1 / NC_1) 

  • Write support with automatic queuing of write requests 

Parameter 

Specification 

Transport 

TCP/IP, standard port 2404 (configurable) 

Session Management 

Stateful session handling per RTU, with sequence number tracking (I/S/U-format) 

Timers 

Configurable t1/t2/t3 timeout parameters per RTU connection 

Flow Control 

Configurable k (unacknowledged APDUs) and w (acknowledgment window) parameters 

Acquisition Mode 

Event-driven acquisition alongside general and counter interrogation cycles 

Redundancy 

Support for redundant RTU connection groups (where configured) 

Concurrent RTUs 

Multi-RTU polling and parallel communication across multiple plants/substations 

Offline Handling 

Configurable wait times for offline RTUs and ongoing sessions 

Write Handling 

Write support with automatic queuing of write requests 

Data Optimization 

Auto-optimized polling with data compression 


Technical Higlights

Stateful session management per RTU, with full sequence number and timer handling 

Event-driven data acquisition alongside general/counter interrogation 

Full ASDU coverage — status points, measured values, counters, and time-tagged events 

Multi-RTU polling and parallel communication across multiple plants 

Write/command support with automatic request queuing 

Connection health monitoring per RTU session 

Features

The Enture OT Connector transforms raw ASDU data into meaningful operational parameters. 

Supported capabilities: 

  • ASDU-to-tag abstraction across status, measurement, and counter types 

  • Time-tagged event handling (CP56Time2a) 

  • Human-readable tag naming 

  • Parameter mapping and data abstraction 

  • Device metadata enrichmen

Supported Deployment Platforms

Virtual Machine (VM)          Deploy on enterprise virtualization platforms.

Industrial Edge Servers      Dedicated industrial edge computing devices.

Industrial Computers          Industrial PCs installed within manufacturing facilities.

Linux-Based Deployment   Runs natively on Enture Edge OS deployed on Linux.

Data collected through the IEC 104 connector flows into Enture Edge OS and onward to: 

  • Enture Dashboards & Analytics 

  • MES Applications 

  • SCADA Systems 

  • Data Historians 

  • Cloud Platforms 

  • Multi-RTU polling and parallel communication across multiple plants/substations 

  • Stateful session management with sequence number tracking 

  • Event-driven acquisition alongside general and counter interrogation 

  • Connection health monitoring per RTU session

  • Configurable t1/t2/t3 timers and k/w flow control parameters 

    • Real-time machine monitoring
    • Event-based data collection
    • Periodic polling
    • Historical data buffering
    • Machine status tracking
    • Alarm monitoring

    • Remote configuration 

    • Centralized RTU/session management 

    • Parameter mapping and ASDU-to-tag configuration 

    • Timer and flow-control parameter tuning per RTU 

    • Connection diagnostics

    • Key Benefits 

    Built for Utility & Grid Telemetry 

    Full IEC 104 ASDU coverage — status points, measurements, counters, and time-tagged events — purpose-built for substation and RTU environments. 

    Stateful, Resilient Sessions 

    Per-RTU session management with sequence tracking and configurable timers keeps data flowing reliably across unstable WAN links. 

      Read and Write Capable

      Full command/control support — single, double, and setpoint commands — with automatic request queuing. 

      Multi-RTU Scalability 

      Multi-RTU polling and parallel communication across multiple plants from a single connector instance. 

      Hardware-Independent Deployment 

      Deploy on virtual machines, industrial computers, edge servers, or existing Linux infrastructure without proprietary hardware. 

      Interoperable and Hyper-Scalable Data Platform

      Enabling digilization and Industry 4.0 solutions


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      Total incoming messages Per Day

      250M+

      Data Processed

      95+

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