Specifications

Programmers Guide TH230/TH230+
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Description of EERPOM Updates
After switching on the printer the statistic counters, which are stored in the EEPROM,
were copied into the RAM.
Up from that point the statistic counters are accumulated inside of the RAM.
This means, actual statistic counters, which are stored in the RAM and EEPROM statistic
counters are different!
The first time after switching on the printer, the statistic data are saved after 7,5 minutes.
After this the statistic data are saved into the EEPROM every 15 minutes.
Due to this procedure, with every power off the statistical data of the last 15minutes could
be lost.
Specialties
Switching On the Printer
After the power on procedure , the statistical data were updated once to increase the
Power on count.
EEPROM Updates while Self Test Printing
If the self-test is started while switching on the printer, the update of the Power on
counter happens during the self test is printed.
This means, that during this update of the statistical data, parts of the self test printout
were added to the statistic data.
Example of Loosing Statistical Data
If statistic data are readout by a command or printed with the self-test printout always the
actual counters – which are accumulated in the RAM - are transmitted or printed.
Due to the update of the EEPROM every 15 minutes, the following situation could happen:
• Assume the current line feed counter is 10.000 lines
• Switch on the printer, feed 100 lines, readout line feed counter which is now
10.100 lines (Accumulated data in the RAM. The line feed counter in the EEPROM
is still 10.000)
• Switch off the printer within 7,5 minutes
• Switch on the printer again
• Readout line feed counter which is still 10.000 lines because the last 100 lines were
printed within the last 7,5 minutes before switching off