Product manual

Start-Up
83
Operating the Model 26
Start-Up
When the Model 26 is powered-up, it initializes all RAM memory locations to zero and
checks the integrity of the Software Configuration Program parameters stored in the
microprocessor’s internal EEPROM. In the unlikely event the integrity of these
parameters has been compromised, the Model 26 will attempt to replace them with
Factory Default Values. If the Model 26 succeeds in reprogramming the EEPROM, it
will send the following message out the CAD/PRINTER port.
EEPROM CHECKSUM ERROR!
EEPROM programmed to factory defaults
If the Model 26 was not successful in reprogramming the EEPROM, it will send the
following message out the CAD/PRINTER port. (If this message appears, you should
contact Zetron Technical Support.)
EEPROM CHECKSUM ERROR!
EEPROM NOT programmed
If the Model 26 is connected to a CAD system and the EEPROM is reprogrammed to
Factory Default Values, it will no longer be able to communicate with the CAD program
because the default setting for the CAD/PRINTER port is Data Logging mode, not CAD.
After the Model 26 has initialized and checked itself internally, it starts polling each
Model 6 that has been configured in its program. During start-up, all of the LEDs in the
individual Model 6 Station buttons are initialized to the Off Line state. As each Model 6
acknowledges its poll, these LEDs will change to indicate the current state of the Model
6s associated with them.