I hope you have better results with your Laguna II than I had with mine. Mine would have bewildered any fault reader with the sheer volume of errors that cropped up.
I returned it to the dealer after 2 weeks for a full refund.
When cars produce multiple fault codes it is usually due to a faulty ECU. This may not have been so in your case but we see this quite a lot.
Our new scanner was just short of £3K. We do have other systems too, it's not a cheap business, then people moan about paying labour costs but don't take into account that equipment doesn't just arrive from the free parts store from cyborg.
Try THIS company for data logging equipment. Data loggers also have fault code reading ability.