Rockwell Automation 7763 Medium Voltage OneGear SMC Flex Motor Controller (10-15 kV) - Manual (Page 66)

66 Rockwell Automation Publication 7760-UM001D-EN-P - October 2014
Chapter 3 Programming
Parameter Management Before you begin programming, it is important to understand how the controller
memory is:
• structured within the SMC Flex controller
• used on power-up and during normal operation
Refer to Figure 35 and explanations below.
Figure 35 - Memory Block Diagram
Random Access Memory (RAM)
This is the work area of the controller after it is powered up. The SMC Flex uses
an Auto Store feature when programming parameters. When parameters are
modified in the program mode, the new values are stored immediately in RAM
and then in EEPROM, once the enter key has been pressed. If control power is
lost prior to the enter key being pressed, these values will be lost. When the device
first powers up, the values from the EEPROM area of memory are copied into
RAM.
Read-only Memory (ROM)
The SMC Flex controller comes with factory default parameter values. These
settings are stored in non-volatile ROM and are displayed the first time you enter
the Program mode. At any time you can restore defaults by accessing the memory
storage menu.
Table 10 - SMC Flex Controller ROM Reset Procedure
Electrically Erasable Programmable Read-only Memory (EEPROM)
The SMC Flex controller provides a non-volatile area for storing user-modified
parameter values in the EEPROM.
Esc Esc Sel Sel
EEPROM RAM ROM
Description Action Display
Recalling Defaults:
After parameter values have been modified, factory default settings can still be re-
initialized.