Safety controllers
Flexi Soft

The software-programmable safety controller

Your Benefits

  • Modular adaptation to the particular requirement means optimum scalability and therefore cost savings
  • Intuitive configuration software featuring comprehensive functions for straightforward engineering
  • Rapid verification of the safety application: The configuration software provides documentation and a wiring diagram
  • The main module's diagnostics interfaces and the configuration storage facility in the system plug enable rapid commissioning, component replacement, and troubleshooting, resulting in minimum downtimes


The software-programmable safety controller

The Flexi Soft safety controller can be programmed via software. Thanks to the modular hardware platform, Flexi Soft provides a tailored and efficient solution for a whole host of safety applications. A wide range of modules are available: main modules, gateways, digital and analog input/output modules, Motion Control modules, as well as relay modules. The license-free Flexi Soft Designer configuration software enables intuitive programming, rapid commissioning, and continuous diagnostics down to the automation level. Functions to enable safe controller networking, safe series connection, or safe drive monitoring reduce costs and boost productivity. A whole host of additional functions means that Flexi Soft is able to bridge the gap to system solutions from SICK.

At a glance
  • Safety controller with modular hardware platform
  • Configuration saved in the system plug
  • Safe controller networking with Flexi Line
  • Safe series connection with Flexi Loop
  • Safe drive monitoring
  • Safe analog value monitoring
  • Flexi Soft Designer license-free configuration software


Robotics image
Robotics image

Working together as equals

Thanks to sensors from SICK, robots perceive more precisely. For all challenges in the field of robotics: Robot Vision, Safe Robotics, End-of-Arm Tooling, and Position Feedback.
Find out more

By partnering with us, you can benefit from our expertise in the functional safety of productivity-increasing safety solutions. So that your processes run smoothly, man and machine work as a team, and we can jointly push the boundaries of what is achievable.

Boost your productivity - with safety solutions from SICK


Technical overview

  • Technical data overview

    Technical data overview

    Safety levelPL e, SIL3, SILCL3
    Configuration methodVia software / hard wired
    System construction


    1 system plug

    1 main module

    0 ... 2 gateways

    0 ... 12 expansion modules

    0 ... 8 relay modules

    0 ... 11 expansion modules

    0 ... 1 gateways

    Fieldbus, industrial networkCANopen, CC-Link, DeviceNet™, EtherNet/IP™, EtherCAT®, Modbus, PROFINET, PROFIBUS DP, EFI-pro, SSI, Incremental, Serial
    Safe SICK device communication



    Safe networking

    Flexi Link

    Flexi Line

    Global emergency stop

    Safe drive monitoringYes
    Safe series connection with Flexi LoopFlexi Loop
All technical data can be found accompanying the individual product