20 FP-550F
15
Byte 3: The status of the configuration keys
3.7 = 1 Reserved
3.6 = 1 Not used
3.5 = 1 Not used
3.3 = 1 If SW4 is ON sets the baud rate of the serial port.
3.2 = 1 If SW3 is ON sets the “transparent display” mode.
3.1 = 1 Not used
3.0 = 1 In the ON position the SW1 permits the automatic paper cutting
function.
Byte 4: The fiscal memory
4.7 = 1 Reserved
4.6 = 1 Reserved
4.5 = 1 OR of all mistakes marked by ‘*’ from bytes 4 and 5.
4.4 = 1* Fiscal memory is fully engaged.
4.3 = 1 If there is space for not more than 50 entries in the FM.
4.2 = 1 If there is no module “fiscal memory”
4.1 = 1 Not used
4.0 = 1* When there is an error during entry in the fiscal memory
Byte 5: The fiscal memory
5.7 = 1 Reserved
5.6 = 1 Reserved
5.5 = 1 If the serial number and the number of the fiscal memory are
programmed in advance
5.4 = 1 If tax rates have been entered at least once
5.3 = 1 If the printer is in the fiscal mode
5.2 = 1* Not used
5.1 = 1 If the fiscal memory has been formatted
5.0 = 1* If the fiscal memory is in the “read-only” mode
POWER SUPPLY CUT-OFF
The status of the printer at each particular moment is reflected in the so-called “status
bytes”. The application program must get information on the status of the printer when
switched ON after a power cut-off. This is performed by the commands 6(4AH) and
103 (67H).
The application program must make a decision on the future behavior of the printer
depending on its current status. It is guaranteed that the fiscal memory will not be
affected by the power failure as well as that all accumulated sums in the operational
memory of the device will be valid. If the power cut-off has occurred during a printing
session, when switched ON, again the printer will print a line containing the text
“*POWER OFF*” in an expanded bold type and will then complete the print.
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