The modular autonomous tool magazine is a central tool storage unit that is used to supply the machine tools connected within the RILE FMS with tools. The number of tools stored in the tool magazine can be configured in a customisable manner. After having loaded the tools into the modular autonomous tool magazine via the tool drawer, the tool data is checked. Therefore the robot will move to a defined position where the tool chip write- and read station is located, after having removed the tool from the drawer. Here, the tool data contained on the chip at the tool is read out and transferred automatically to the master control. This way, the tool is defined in the tool management system of the overall system and stored with all required data. The tools can be stored either by means of a fixed location ID code or by using envelope curves. The modular autonomous tool magazine can also be used in standalone operation at an individual machine tool.