AC measurements were derived at the existing main switchboard and all other parameters are obtained via a MODBUS interface to the Wartsila control system. This includes commands for pre-start, start, stop, speed control and voltage control. Note that this is the only connection to the generator. Then after an initial pre-start command, the GeCon waits until a ready to start status is received. After this, an engine start command is sent to the Wartsila. The entire engine start-up, stabilisation, synchronising and CB control is performed by the Wartsila. Once online, the GeCon will bias the speed and voltage to maintain power levels according to the operational mode (load sharing or baseload).