OPC UA Server Gateway for Siemens SINUMERIK 840D sl/pl Controllers

Gateway for tooling machines with OPC UA & MQTT Interface to enable Industrie 4.0 applications

uaGate 840D allows reading the complete SINUMERIK 840D machine tool data from Solutione Line and Power Line models. It provides access to the NC part with its axis, tool, program and drive data as well as specific alarms. In addition, a connection to the integrated SIMATIC Siemens S7-300 can be established. The data from both connections are available via the OPC UA and MQTT interfaces and thus can be used for various Industrie 4.0 applications.

With uaGate 840D, important spindle and axis data, such as torque and power consumption, can be read and reused in various applications. In addition, the active program as well as sub programs and the currently used tool is accessible. For instance, these data are available for condition monitoring, predictive maintenance, for data logging or for analysis tasks, such as spindle and axis monitoring. The gateway can also be used to acquire data from older SINUMERIK 840D controllers. Due to the preconfigured data symbol file for standard use cases, the user does not require any specific SINUMERIK know-how for reading the data and enables easy comissioning.

The product can simply get mounted next to the SINUMERIK NCU on a DIN rail and requires 24 VDC power supply. It has two independent Ethernet interfaces, one addressing the machine and the other addressing the IT network. Between these, the gate-way acts as a firewall. The configuration is performed in just a few clicks using any web browser and the integrated web server.

Similar Solutions:

uaGate SI: OPC UA Server Gateway with MQTT Support for SIMATIC S7 Controllers
uaGate MB: OPC UA Server Gateway with MQTT Support for Modbus TCP Controllers



Access to Data in PLC, NC and Drives Area of Siemens SINUMERIK 840D sl/pl

  • Access to many different Siemens SINUMERIK 840D Solution Line and Power Line controllers
  • Data integration into higher level management tools like ERP, MES or SCADA systems
  • Embedded OPC UA Server providing open, platform-independent communication
  • Access to NC area containing axis, tool, program, drive data and specific alarms
  • Use of data for analysis, condition monitoring, predictive maintenance or data logging purposes
  • No additional Siemens licenses necessary
  • Initial configuration without requiring PLC or NC programming

Easy Configuration

  • Usage of predefined symbol files for standard configurations for easy comissioning
  • Upload of AWL file created from user-defined NCVar Selector symbol files for NCK connection
  • Easy symbol import from SIMATIC STEP 7/TIA Portal projects for S7 PLC connection
  • Gateway configuration using integrated web server and standard web browser

Industry-proven Security

  • Physically separated Ethernet interfaces protecting SINUMERIK from unauthorized access via IT network
  • Support of security standards like SSL/TLS, X.509 certificates and user authentication for OPC UA and MQTT communication

Order Information

Scope of Delivery 
HardwareuaGate 840D
SoftwareTool for configuration over integrated web interface
DocumentationQuick Startup Guide (printed documentation)
Order Numbers 
GAA-YX-145144uaGate 840D
Additional Products and Services 
6FC5851-1XC45-4YA8SINUMERIK 840D sl CNC software and SINUMERIK Operate, toolbox including NCVar Selector
(please order directly from Siemens)
GPL-CS-191000echolink S7-compact (PROFIBUS/MPI adapter for communication with SINUMERIK 840D pl)


Data acquisition from SINUMERIK 840D sl controllers and data integration via OPC UA
Data acquisition from SINUMERIK 840D sl controllers and data integration via OPC UA uaGate 840D is a gateway for tooling machines with OPC UA & MQTT Interface to enable Industrie 4.0 applications.


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