Forward generation method of relay interface type trackside electronic unit configuration file

The invention discloses a forward generation method of a relay interface type trackside electronic unit configuration file. The invention relates to the technical field of rail transit signals. The method comprises the following steps: acquiring a project route table and a relay code bit definition table of an interlocking input LEU, generating all corresponding paths which cannot be re-divided and take a signal machine as a starting end signal machine route for each active transponder controlled by the LEU, and generating corresponding path information to obtain a corresponding input relay state value; then setting a mask for each corresponding path which cannot be divided again, and shielding irrelevant relay input; then generating a message containing the states of the annunciator and the turnout covered by the path and whether the message contains the information of the protection section or not according to a transponder message specification; and finally, judging whether messagegeneration of all transpo