Data buffer |
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Full | Near Full | Near Empty | Empty | |
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Remainder |
| 256 bytes |
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256 bytes |
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DTR “MARK”
DTR “SPACE”
[Paper out]
When the “paper out’ detector senses the end of the paper, the printer stops printing after printing a maximum of two more lines or on feeding the paper. Immediately after a “paper out” condition is detected, the printer sets to OFF LINE and the DTR changes to “MARK”. (To reset printer after a “paper out’, load paper into the printer and press the ON LINE switch to set the printer to ON LINE.)
[Mechanical error]
Mechanical errors are detected when the front cover is opened during printing, or when the motor locks and the unit will not print. Immediately after a mechanical error occurs, the printer sets the DTR to “MARK” and then sets the printer to OFF LINE. To cancel a mechanical error, close the front cover properly and press the ON LINE switch. If the buzzer sounds and the ALARM lamp flashes at this time, then locate the cause of the error and turn the power for the printer off and back on again to reset the printer.
[Status] | b7 | b6 | b5 | b4 | b3 | b2 | b1 | b0 |
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Constantly set at “0”
Vertical parity error 1: error
Framing error 1: error
Mechanical error 1: error
Paper empty 1: empty
Buffer empty 1: empty
Buffer overflow 1: overflow
Compulsion switch High level
(Switch is set to ON)
– 15 –