VersaPro Temperature Controller Page 62

The ‘K’ command is a single character command that copies the values in the RAM mirror into the EEPROM.

The EEPROM is completely erased before any values are written. There is no display that is generated while

this function is executed. It is necessary to wait about 5 seconds for the display prompt (>) to return before

another command is issued.

19.7 ‘J’ Display EEPROM Values

This is a single character command that displays all of the EEPROM values in the same format as the ‘D’

command.

19.8 ‘S’ Status Display

This is a single character command that displays the status of the processor. This command is helpful when

trying to determine what fault may have caused a reset. The display will show any fault codes and a thumb

twiddler value. This value is an idle counter for the processor and should be greater than zero for normal

operation.

19.9 ‘W’ Write RAM with EEPROM or Data Values

The ‘W’ command is a multiple character command that writes a byte from EEPROM to RAM memory if the

RAM address is within the range of the EEPROM - RAM image. Otherwise if the RAM address is an address

is outside the EEPROM image address it will write input data to a RAM address. The formate is W <addr> for

the first condition and W <addr> <data> for the second condition where both the address and data are four

character hexadecimal values.

19.10 ‘X’ Exit Command

This is a single character command the turns off the Monitor mode, resets the processor, and returns the

processor to normal process mode. If the processor does not return to normal mode following this command,

check the status for any fault conditions.

19.11 Viewing Status and Memory

The next figure shows the displays for the status command and the memory display command. The status

command will show any faults or resets that have occurred in the instrument. The Thumb Twiddler number is

a count of idle time for the processor. The reset number for this is 3000 (‘Z’ command). This number should

never reach zero.

The ‘D’ command is followed by the start of the memory locations to be displayed. In this case the EEPROM

memory block is being displayed starting at hexadecimal address 0800.

1 2 ... 57 58 59 60 61 62 63 64 65 66 67 ... 78 79

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