Printer Buffer; Device Id - Citizen CBM1000 User Manual

3.12 Printer Buffer

3.12.1 Buffering
The printer buffer has a capacity of 4K bytes (DS1-6: OFF). The host is released
immediately after it transfers data to the printer.
3.12.2 Buffer Full Busy
If the printer buffer becomes full, the Busy/DTR signal is set to "High" to indicate
"Buffer Full" to the host. The printer is unable to receive data from the host while in
Buffer Full.
Printer Buffer
4K bytes
72 bytes
Note: The printer buffer can be initialized with DS1-6.

3.13 Device ID

On receiving a Device ID request from the host, the printer returns a device ID as
shown below through the parallel interface:
<00>H<31>H
MFG:CBM;
CMD:CBM;ESC/POS;
MDL:CBM1000;
CLS:PRINTER;
The first 2 bytes of the device ID indicates the total length of the ID including itself.
Busy/DTR Asserted
128 bytes remaining
20 bytes remaining
— 21 —
Busy/DTR Reset
256 bytes remaining
30 bytes remaining