VersaPro Temperature Controller
Page 63
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Figure 13 ‘S’ and ‘D’ Commands
19.12 Loading Default Values
The most common use of the Monitor Mode is to re-set or load the processor’s internal EEPROM with default
values and re-calculate the EEPROM checksum. This is done with a series of commands starting with the ‘L’
command.
The instrument holds default operational parameters in FLASH. This area of memory is mapped the same way
the EEPROM memory is. The instrument also uses a pre-defined area in RAM to change and then copy data
into EEPROM. This RAM area is also mapped the same as the EEPROM. It is necessary to copy the FLASH
values to the RAM area first using the ‘L’ command.
At the > prompt, type in the character ‘L’ and press the Enter key. This command will tell the instrument to
load the RAM area with default values from the FLASH memory.
A series of character lines will print down the screen followed by another prompt. At the prompt, type in the
character ‘K’ and press Enter. This command will tell the instrument to load the EEPROM from the RAM
image that has just been programmed.
The screen will advance one line and display the prompt. At the prompt, type in the character ‘X’ and press
Enter. The ‘X’ command causes the instrument to exit monitor mode, resets the processor, and returns to
operation mode. This sequence is shown in the following figure.
