12
ZG310 Thermal Printer User Instructions
3 Modes of Operation
The ZG310 has two operating modes, when not actually printing:
l
Idle Mode: ready to accept data, but no data is in the buffer awaiting
printing, and the printer motor is not running;
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Spool Mode: active, but storing data for later printing.
Modes are indicated by different color combinations on the front-panel LED (see
page
12
).
The ZG310 is supplied configured as permanently powered on whenever the power
supply is connected and switched on.
The ZG310 may optionally be supplied with a sleep mode feature. The sleep period is
configurable between 1 and 65534 seconds.
3.1 Idle Mode
In idle mode, the printer is ready to receive data, which will be printed as soon as
complete lines or graphics patterns are decoded. It responds to the paper feed button
normally and can also produce a demonstration print (see below).
3.2 Spool Mode
In spool mode, data is received and stored, but not printed. This is useful when printing
needs to be suppressed during data transfer (for example in mobile radio systems); or
when the printer is unable to print because the paper has run out or the lid is open.
The ZG310 will automatically enter spool mode when the paper is out, when the head
is up, or if some other error condition occurs, or alternatively by command from the
host. Spool mode may be cleared by host command, automatically when the condition
is cleared, or by "double-clicking" the feed button.
3.3 LED Indications
The LED indicator at the front of the ZG310 has a number of color combinations, which
repeat in up to a 4-phase pattern to provide status information (see table below).
In summary:
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If the LED is constant green it indicates that the printer is operating normally.
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Flashing on and off indicates that Spool mode is active and no printing can
take place.
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Red warns of a low power supply voltage or other problem.
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No light indicates that the unit is off.