Logging data to the SD card

Hello everyone. Me and my coleagues wanted to log data from pixhawk to an SD card using “logger on” command in Mission Planner. After the logging we wanted to download data to computer using “Download data using MavLink” function in MP.
Problem is that after we downloaded data there was no log neither .bin file… only TLOG or ULOG. We tried to transfer these logs but still no answer. We need log data format for analysis and then to create matlab file. Can anybody help where is the problem in data downloading or how can we got pure .log and .bin file ?