With the status flag set, and data reception prohibited, the vacant area of the buffer gradually increases as the printer continues to print. When the vacant area in the buffer reaches the specified value (typically 512 bytes; refer to your printer manual), the flag is reset and data entry is again enabled.

Note

Reverse Channel pin (No. 11) and DTR pin (No. 20) are internally connected on the interface board and must have identical signal levels.

Printer status error

The flag will be set immediately regardless of the remaining buffer capacity if the printer detects an error.

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