Method for commissioning an updated application (app2n) for an industrial automation arrangement, wherein a first industrial controller containing a first application comprises at least one local process image (app1Shm, app2Shm) containing locally used process data, wherein the process data consist of a number of values, in particular values for sensors and/or actuators of the industrial automation arrangement, wherein provision is made for a local process data management system (PDM_ES) for managing identifiers and memory addresses of the values, wherein the first application exchanges information about the identifiers and memory addresses of the values with the local process data management system (PDM_ES) and reads and/or writes values from and/or to the at least one local process image (app1Shm, app2Shm) using the information, characterized in that provision is made for a test unit containing the updated application (app2n), in particular a new version, to be tested, of the first application, and containing at least one further process image (app2nShm) and containing a further process data management system (PDM_TE), wherein the updated application (app2n) exchanges information about the identifiers and memory addresses of the values with the local process data management system (PDM_TE) of the test unit and reads and/or writes values from and/or to the at least one further process image (app2nShm), in that a respective proxy service is set up on the first controller and on the test unit, wherein the proxy service performs respective communication with the respective local process data management system (PDM_ES, PDM_TE) and reads and/or writes values from and/or to the respective local process image (app1Shm, app2Shm, app2nShm) using the information exchanged in the process, in that the updated application (app2n) is executed in parallel with the first application, wherein the values to be read from the updated application (app2n) are read from the at least one process image (app1Shm, app2Shm) of the first controller by the proxy services and inserted into the at least one further process image (app2nShm), wherein a monitoring device tests at least one output value stored in the at least one process image (app2nShm) of the test unit by the updated application (app2n), and wherein the updated application (app2n) is cleared for use in productive operation only following a successful test. wherein a first industrial controller containing a first application comprises at least one local process image (app1Shm, app2Shm) containing locally used process data, wherein the process data consist of a number of values, in particular values for sensors and/or actuators of the industrial automation arrangement, wherein provision is made for a local process data management system (PDM_ES) for managing identifiers and memory addresses of the values, wherein the first application exchanges information about the identifiers and memory addresses of the values with the local process data management system (PDM_ES) and reads and/or writes values from and/or to the at least one local process image (app1Shm, app2Shm) using the information, characterized in that provision is made for a test unit containing the updated application (app2n), in particular a new version, to be tested, of the first application, and containing at least one further process image (app2nShm) and containing a further process data management system (PDM_TE), wherein the updated application (app2n) exchanges information about the identifiers and memory addresses of the values with the local process data management system (PDM_TE) of the test unit and reads and/or writes values from and/or to the at least one further process image (app2nShm), in that a respective proxy service is set up on the first controller and on the test unit, wherein the proxy service performs respective communication with the respective local process data management system (PDM_ES, PDM_TE) and reads and/or writes values from and/or to the respective local process image (app1Shm, app2Shm, app2nShm) using the information exchanged in the process, in that the updated application (app2n) is executed in parallel with the first application, wherein the values to be read from the updated application (app2n) are read from the at least one process image (app1Shm, app2Shm) of the first controller by the proxy services and inserted into the at least one further process image (app2nShm), wherein a monitoring device tests at least one output value stored in the at least one process image (app2nShm) of the test unit by the updated application (app2n), and wherein the updated application (app2n) is cleared for use in productive operation only following a successful test.