Configuration of slave devices in industrial network system

A method for configuring slave devices in a communication system in which a master device and slave devices are connected in a chain via a debug line and in parallel via a field bus, each slave device being indexed by an index greater than or equal to 1, the slave device of index 1 being connected to the master device, the slave device of index k being connected to the master device in order to register the slave device of index k equal to or greater than 1. The master device: broadcasts, via the fieldbus, an address configuration frame containing an instruction for address configuration of a defined address of the slave device having an index k, broadcasts, via the fieldbus, a request for device information containing the defined address, and upon receiving a response containing the device information and the defined address, sends the address configuration frame to the slave device; a command is broadcasted via a field bus for sending a debug signal via a debug line to a slave device of exponent k + 1, the