3.12Printer Buffer
3.12.1Buffering
The printer buffer has a capacity of 4K bytes
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 | Busy/DTR Asserted | Busy/DTR Reset |
|
|
|
4K bytes | 128 bytes remaining | 256 bytes remaining |
|
|
|
72 bytes | 20 bytes remaining | 30 bytes remaining |
|
|
|
Note: The printer buffer can be initialized with
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.
ENGLISH
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