A functional connection unit for connecting at least one parameterizable functional module (118a, 118b), comprising: at least one functional module connection (120a, 120b), to which the parameterizable functional module (118a, 118b) is connectable; a communication interface, which is configured to receive first parameter data records, wherein the first parameter data records comprise parameter data for parameterizing the parameterizable functional module (118a, 118b) and first parameter indices, the first parameter indices indexing a memory area for the parameter data; and a processor, which is configured to convert the first parameter indices into second parameter indices in order to obtain second parameter data records, the second parameter indices indexing a predetermined memory area of the parameterizable functional module (118a, 118b) for storing the parameter data in the parameterizable functional module (118a, 118b), wherein the functional connection unit further comprises a parameter data memory, wherein a conversion rule is stored in the parameter data memory, the conversion rule indicating the conversion of the first parameter indices into the second parameter indices, and wherein the processor is configured to read out the conversion rule from the parameter data memory and to convert the first parameter indices into the second parameter indices according to the conversion rule, wherein the communication interface is configured to receive the first parameter indices from a control server during an activation of the functional connection unit, wherein the second parameter indices are at least one memory address of the parameterizable functional module (118a, 118b), characterized in that the first parameter data records comprise an activation field, which indicates an activation or a deactivation of the parameter data, and that the first parameter data comprises a first numerical value, wherein the processor is configured to convert the first numerical value into a second numerical value, which is in a number range of the parameterizable functional module (118a, 118b) in order to obtain the second parameter data records. at least one functional module connection (120a, 120b), to which the parameterizable functional module (118a, 118b) is connectable; a communication interface, which is configured to receive first parameter data records, wherein the first parameter data records comprise parameter data for parameterizing the parameterizable functional module (118a, 118b) and first parameter indices, the first parameter indices indexing a memory area for the parameter data; and a processor, which is configured to convert the first parameter indices into second parameter indices in order to obtain second parameter data records, the second parameter indices indexing a predetermined memory area of the parameterizable functional module (118a, 118b) for storing the parameter data in the parameterizable functional module (118a, 118b), wherein the functional connection unit further comprises a parameter data memory, wherein a conversion rule is stored in the parameter data memory, the conversion rule indicating the conversion of the first parameter indices into the second parameter indices, and wherein the processor is configured to read out the conversion rule from the parameter data memory and to convert the first parameter indices into the second parameter indices according to the conversion rule, wherein the communication interface is configured to receive the first parameter indices from a control server during an activation of the functional connection unit, wherein the second parameter indices are at least one memory address of the parameterizable functional module (118a, 118b), characterized in that the first parameter data records comprise an activation field, which indicates an activation or a deactivation of the parameter data, and that the first parameter data comprises a first numerical value, wherein the processor is configured to convert the first numerical value into a second numerical value, which is in a number range of the parameterizable functional module (118a, 118b) in order to obtain the second parameter data records.