Method for a data transmission between a first and a second module and system including mobile parts for carrying out the method

A method for a data transmission between a first module and a second module, the first module including transmitters, the second module including transmitters, a time basis of the first module being synchronized with a time basis of the second module, comprising:

• (b) emitting, by the transmitters of the first module, a light signal pulse individually in a sequence in a respective time range;
• (c) determining a particular receiver of the second module at which a strongest received signal occurs and determining a particular time range and/or a number of the particular time range in which the strongest received signal occurs;
• (d) transmitting information corresponding to the determined time range and/or corresponding to the determined number from the second module to the first module;
• and
• (e) determining which particular transmitter of the first module is associated with the determined time range and/or the determined number and using the determined particular transmitter of the first module for subsequent data transmission from the first module to the second module.