Why does the value of Sum data displayed at program download differ from the expected value?
Is the [Writing Flash memory] mode selected in the [Select Emulator mode] dialog box?
If the [E10A-USB Emulator] mode is selected, the debug information (software breakpoint setting, ID code, etc.) being written simultaneously with the program may be causing a value different from the expected value to be displayed.
If the [Writing Flash memory] mode is selected, the debug information is not written.
Note that when using a microcontroller that does not support the [Writing Flash memory] mode, use the E8a emulator and Flash Development Toolkit to write a program to flash memory.