Chapter 2 Devices 2.2.17 Index Register (E) The Index register is a 16-bit data register. It is similar to the General register in that data can be read from it and written to it; however, it is mainly used as the index register. The range of index registers is E0 – E9. Refer to Section 4.4 in the DVP-ES3 Series Programming Manual for more information about using index registers. 2.2.18 File Registers (FR) 2_ The DVP-ES3 Series PLC provides you with File registers for storing larger numbers of parameters. You can edit, upload, and download the parameters in the File registers through ISPSoft. You can read the values in File registers while operating the PLC.
Refer to the MEMW instruction (API 2303) in the DVP-ES3 Series Programming Manual for more information about how to write to the File registers. 2-95