Communication Hub & Compact Controller Module

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On-Board Ethernet Switch

With 5 total Ethernet connections and optional BroadR-Reach, this controller allows for centralized communications from peripheral devices that require high-speed data transmission.


A next-generation machine controller built for advanced applications


The ESX.4cs-gw is a compact, modern-designed fourth generation control unit from STW. As a freely programmable communications gateway, it not only offers controller capabilities, but can also operate as a communications hub for the entire onboard vehicle network. With multiple ethernet switch options available, it is ready for the latest in high-speed machine peripherals.


With the 4CS controller - "C" and IEC61131 as program languages are supported. The respective development environments for this are CODESYS and openSYDE. openSYDE is characterized above all by its openness: freely utilizable interfaces to programs such as those for the recording of requirements or the integration of third-party control units. With openSYDE, rapid realization of applications which must take functional safety into account is possible. In addition, openSYDE offers the Development and Service Team a user-friendly operator interface in ultra-modern design and impresses users with its continuity, from the definition of variables, right up to support.


  • CAN x 6
  • RS232 x 1
  • Ethernet Switch Options
    • 1 Gb
    • BroadR-Reach
    • 100 Mb
  • Additional Ethernet Diagnostics Port
  • LIN x 1
  • I/O
    • Analog Inputs x 4
    • Multi Inputs x 8
    • Digital/PWM Outputs x 4
    • Sensor Supply x 2


  • 32 bit Aurix Multicore @ 300MHz
  • RAM - 2 MB Internal
  • Flash - 8 MB Internal
  • Data Flash - 16 MB Internal
  • EEPROM - 32 kB


Flexible programming in C, logi.CAD ­(IEC ­61131-3), or STW’s lifecycle support framework openSYDE.


  • Manufactured in Germany using the latest in advanced electronics for mobile machines and off-highway vehicles
  • Compact - small footprint without sacrificing computing power
  • Freely programmable - SIL2 rated for mobile off-highway industry safety standards
  • Cast aluminum housing - high resistance to shock, vibration, EMI/EMC, and drastic changes in temperature
  • Mean Time Between Failure (MTBF) of up to 50 years

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