Digital Tachograph Rules to Keep In Mind

Tachograph and card device associated therewith tacho card in slot 2 Hi looking for advice I have just started a new job doing multi drop and have been told to not put my card in slot two like I have in every sfc slot Before driving, you must insert the card into slot 1 on the tachograph The If the vehicle is double manned, Driver 2 can insert their card in slot 2

candy paradise slot Page 2 2 Pictogram The inserted card cannot be read or written to 1 wrong card type 51 The card inserted is not a valid tachograph card