In a method and an arrangement for processing variable service data structures and display texts, a processing module is provided having a microprocessor, a program memory in which an operating program for the microprocessor is stored, and a non-volatile service data memory having first and second memory areas. Service data are stored in the second memory area and a root table is stored in the first memory area, the root table having a number of table items respectively associated with pointers for the addresses of the service data in the second memory area. Access to the second memory area from the microprocessor ensues exclusively through the root table by selection of a table item, within the context of the operating program, and service data are supplied to the microprocessor from the second memory area from an address identified by the pointer for the selected table item.