Last December I worked as a support employee in the PROCENTEC test team carrying out the network audit on this very special network. The stretch of motorway is actually 7 km long: 1 km at ground level, 2.6 km half-sunken, 1.4 km sunken and a land tunnel extending for 2 km. This resulted in an incredibly long PROFIBUS network where we had no less than 190 segments to check.
The integrated automation systems control and monitor the machineries and auxiliaries on the ferry and are connected via Profibus to all other subsystems.
A Mitsubishi iQ-controller controls the laser, a six-axis test piece handling robot and multiple points of distributed I/O over Profibus connections.
Much of the equipment the control system spoke to was PROFIBUS- or Siemens-based. Two PROFIBUS Master communication modules (MVI56-PDPMV1) from ProSoft Technology were installed inside ControlLogix PACs to facilitate communications.