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 Solution 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 Industry 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 commissioning.

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 Areas from 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
  • Automatic tool recognition and listing of all available magazines and tools
  • 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 commissioning
  • 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 interfaces and separate configuration rights for OT and IT networks preventing intrusions

  • Supporting security standards as SSL/TLS and X.509 certificates

  • OPC UA compliant data encryption and user authentication

  • Security supported for MQTT communication with private and public clouds

Technical Data

uaGate 840D    
Hardware Processor Altera Cyclone V SoC with Dual-core ARM Cortex-A9
  Connectors 2 x IEEE 802.3 100BASE-TX/10BASE-T (independent interfaces)
  Status LEDs PWR (power supply), RUN (running), ERR (error), SYS (configuration)
  Dimensions (H x W x D) 100 mm x 22.5 mm x 105 mm
  Power Supply 18 VDC ... 32 VDC, SELV/PELV supply mandatory
Typically 200 mA, maximum 1 A at switch-on
  Operating Temperature, Horizontal DIN Rail Installation -40 °C ... 50 °C (0 mm minimum distance)
-40 °C ... 55 °C (22.5 mm minimum distance)
  Operating Temperature, Vertical DIN Rail Installation -40 °C ... 35 °C (0 mm minimum distance)
-40 °C ... 40 °C (22.5 mm minimum distance)
  Storage Temperature -40 °C ... 85 °C
  Relative Humidity 10 % ... 90 %, non-condensing
  Weight About 0.2 kg
  Mounting DIN Rail (35 mm)
  Housing Phoenix Contact ME MAX
  Protection Class IP20
Software Protocols SIMATIC S7, RFC1006, SINUMERIK, OPC UA (Server, up to 20,000 OPC UA Node),
MQTT (Publisher, up to 1,000 topics)
  Supported Controllers Siemens SINUMERIK 840D Solution Line, software version V2.7 and higher
Siemens SINUMERIK 840D Power Line, software version V5.3 and higher
  Supported Engineering Tools Siemens NCVar Selector
Conformity Emission EC Directive 2004/108/EC “Electromagnetic Compatibility”, EN 55011, Group 1, Class A
EC Directive 2004/108/EC “Electromagnetic Compatibility”, EN 55022, Class A
EC Directive 2004/108/EC “Electromagnetic Compatibility”, EN 61000, Part 6-4
FCC CFR45, Part 15 Section 15.107 and 15.109 (Class A),
VCCI Class A Information Technology Equipment 2002
  Immunity EC Directive 2004/108/EC “Electromagnetic Compatibility”, EN 61000, Part 6-2
Certifications   CE, FCC, RoHS

Order Information

Scope of Delivery  
Hardware uaGate 840D
Software Tool for configuration over integrated web interface
Documentation Quick Startup Guide (printed documentation)
Order Numbers  
GAA-YX-145144 uaGate 840D
Additional Products and Services  
6FC5851-1XC45-4YA8 SINUMERIK 840D SL CNC software and SINUMERIK Operate, toolbox including NCVar Selector
(please order directly from Siemens)
GPA-CS-041000 NETLink S7-Compact (PROFIBUS/MPI to Ethernet adapter for communication with SINUMERIK 840D Power Line)


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.


Softing Industrial


+49 89 456 56-340

Callback Service

USA, Canada and Mexico

+1 865 251-5252

Callback Service

France & Iberia

+33 6 82 24 66 62