what‘s the Structure of memory？It includes flash and NVRAM and else？
When the program runs，it runs in NVRAM？
I notice that in the manual ,it reference “the precedence on boot-up is (1) NVRAM, (2) Flash, (3) zero.”
What’ the meaning of zero?
That explanation applies only to the variables. The preceding sentence explains it. See end of topic: http://deltamotion.com/support/webhelp/rmctools/Programming/Variables/Variables.htm
For the RMC memory, the program is in RAM. It is stored in Flash. When the RMC starts, the Flash memory is copied to RAM.