IEC 62386-102:2014 is applicable to control gear in a bus system for control by digital signals of electronic lighting equipment. This electronic lighting equipment should be in line with the requirments of IEC 61347, with the addition of d.c. supplies. This second edition cancels and replaces the first edition published in 2009. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) elimination of all non-control gear relevant definitions, b) improvement of the requirements for control gear by clarifying the description, c) improvement of the test command iterations to increase the compatibility, d) addition of new commands, and e) the deletion of the requirements for: 1) timing; 2) control devices. The requirements for timing are now in Part 101 and the requirments for control devices are in Part 103.