Training Systems & Media Proline DS4 Modular, ergonomic workstation for hydraulics. Proline PLC An ideal system for interactive training on PLC programming and the multiple IEC61131 languages. Modular Mechtronic System A complete comprehensive training system for multiple technologies including hydraulics, pneumatics, control engineering, sensors, electric drives, communications and linear technology. DS3 Multifunction workstation for pneumatics and electropneumatics training. Proline Mobile Mobile hydraulics training platform including loads sensing, load independent flow distribution system and throttle control.