CBM America CBM-720 - Manual (Page 35)

CBM-710/720/730/750 User’s Manual
29 CITIZEN
[4] Other errors
When trouble is detected in the printer mechanism, the ALARM lamp goes on, the buzzer is sounded, the
FAULT signal is output, and the DTR signal becomes BUSY. After the cause of the trouble has been corrected,
the ALARM lamp can be turned off by pressing the LINE switch or by making RESET = "0". When the printer
is put ONLINE, data receiving restarts.
(4) Data Receiving Control
When the BUSY signal is LOW, your printer receives data from the host side, but when this signal is HIGH, it
cannot receive data.
(5) Buffering
Data transfer to the input buffer is controlled by the DTR and TD signals. Please refer to 9.3 b) for the DTR
signal and 9.3 f) for the TD signal.