Penso che sia banalmente un quadro di comando.

I presume that we are talking about an interlocking system for the control of railway traffic or light transport systems. The Line Replaceable Units LRU are typically circuit boards or those compoenents that cannot be repired on site, but need to be replaced in-block. The difference between central and station is the exact location of the equipment. Normally the central is installed where the supervision part of the system is, while the station interlocking is installed at every station near to the line side equipment (points, signals etc.)