P 190
33
Prints total operating hours
The command “ESC” o enters the total operating hours in the line buffer. These hours are allocated in
the battery-driven RAM of the Real Time device fitted inside the printer. If, therefore, there is no Real Time
Clock, this command will produce no effect. The hours begin to increase as soon as the printer is switched
on. The increase is, in actual fact, on a minute to minute basis but the printer only counts the completed
hours. As there are four characters it can reach a maximum of 9999 operating hours; it then automatically
zero-sets and continues counting. If, for example, you wish to write:
TOTAL HOURS: 0123 TEST OK
you will send: TOTAL HOURS: $1B$6F TEST OK
The hours are printed in four characters and if there is not enough space in the line buffer, they will not
be printed.
ASCII: ESC B Hex: $1B$42
Sets character font 1
The command “ESC” B selects the first character font. The complete font is printed during the self-test.
Some codes are not standard and are as follows:
$60, $7B, $7C, $7D, $7E, $7F, $8D, $ED, $FA e $FF.
These characters are compatible with earlier printer models. The font may be selected at any time,
keeping in mind that the printer cannot print a line containing two different fonts and will print, therefore,
the last font selected. When the printer is switched on the default value, which establishes which
printing font is to be used, is selected by a flag in a location called the “option register”; this flag can be
manipulated by programming, using the the two keys on the front panel of the printer, by means of
which the default values can be changed.
ASCII: ESC b Hex: $1B $62
Sets character font 2
The command “ESC” b selects the second character font. The complete font is printed during the self-
test. This font contains Cyrillic characters. It may be selected at any time, keeping in mind that the
printer cannot print a line containing two different fonts and will print, therefore, the last font selected.
When the printer is switched on the default value, which establishes which printing font is to be used, is
selected by a flag in a location called the “option register”; this flag can be manipulated by programming,
using the the two keys on the front panel of the printer, by means of which the default values can be
changed.
ASCII: (aa) ESC R Hex: (aa) $1B $72
Reads a piece of data at an address
PRINTER FUNCTIONS
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