A method for efficient logging in a control system is provided. A first plurality of registers, frequently accessed registers, is identified. A request is received from a server to access at least one of the first plurality of registers. The request includes a second plurality of registers and a plurality of data values to be stored in the second plurality of registers. At least some registers included in the request are frequently accessed registers. A third plurality of registers is identified based on predetermined criteria for inclusion. The third plurality of registers is a subset of the second plurality of registers storing a corresponding subset of the plurality of data values. A log entry is stored in an event log file corresponding to each data value included the third plurality of registers.