Logan are quite common in France. If you take a look on our vehicle listing (http://www.outilsobdfacile.com/vehicle_list.html) you will see these cars work in KWP, so PIN 7 and 15 of the connector are used for standard OBD.
To get communication you should try to start your engine, sometimes you have to with Dacia/Renault brand.
About "manufacturer pin's", I guess there is another K/L lines for ABS.
Hope it will help you