Digital Twin Tunnel Model – LTT Library

Infrastructure
November 2022
Together with Siemens, the Library for Tunnel and Traffic (LTT) was developed for TIA Portal V17, WinCC OA 3.18, and SIMIT V11. As a showcase, a digital twin of a tunnel was created with a hybrid setup consisting of real hardware and SIMIT simulation – exhibited at SPS 2022.

Toolbox

STEP 7 (TIA Portal)
WinCC OA
HMI

Background

Due to increasing digitalization and complexity combined with ever-shorter implementation timelines, system simulation plays a vital role. With the right simulation environment, it is possible to test a system in advance, either completely virtually or in a hybrid setup with real hardware components. Through the seamless integration of simulation and S7 program blocks, issues and errors in the digital layer of the system can be identified and resolved before commissioning – reducing testing effort and saving both time and money.

Solution – LTT Library

To enable more efficient engineering, we worked with Siemens to develop the Library for Tunnel and Traffic (LTT) for TIA Portal V17, WinCC OA 3.18, and SIMIT V11. The library includes blocks for the most common tunnel components such as fans, lighting, barriers, and sensors. It consists of:

  • a TIA library for the logic blocks
  • a WinCC OA library with typicals and faceplates
  • a SIMIT library for seamless simulation of the blocks

The TIA library, the SIMIT components, and the WinCC OA types are all available as open-source resources and can be extended and/or modified as needed.

Digital Twin – Tunnel Model

As a showcase, a tunnel model was developed in collaboration with Siemens and exhibited at SPS 2022 . The model contains three sectors: the first sector was implemented using real hardware, while the remaining sectors are simulated using SIMIT Unit.

System used:

  • Controller: S7-1500R/H
  • Remote I/O: ET200 SP via R1 Profinet network
  • Non-R1-capable hardware via Y-switch using S2 connection
  • A purely virtual setup is alternatively possible using PLCSIM Advanced

Components used

  • SIMATIC IPC
  • TIA Portal V18
  • SIMIT V11 & SIMIT CTE
  • PLCSIM Advanced V5
  • WinCC OA 3.18
  • S7-1500R/H
  • Scalance XF204-2BA
  • Scalance SC636-2C
  • SIMIT Unit 256
  • SIRIUS ACT ID

Customer benefits

  • Significant reduction in testing effort during actual commissioning
  • Early error detection in the digital model
  • Flexible hybrid setup (virtual + hardware)
  • Reusable, open-source library for future projects
  • Seamless integration of simulation and real control logic

enet GmbH can provide you with a customized solution using all the technologies featured here – from planning and development to commissioning.

work with us

We create success

Any ideas or questions?
Let's take a look at your processes and see where we can do something better together.
icon arrow
icon arrow
portfolio