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C0H 0x06 C1H
C0H 0x04 C1H
Printer will send this frame after it receives the print data frame successfully.
୕
IMPORTANT !!
In every frame coming from the printer, 1 Byte of Null is preceded to SOF,
and CR and LF are followed by EOF.
For example, the actual data of ETX frame is 0x00, 0xC0, 0x03, 0xC1, 0x0D,
and 0x0A. The host can ignore these prefix and suffixes.
C0H 0x15 C1H
C0H 0x03
Data ID
No.
C1H
Printer will send this frame after it finishes all of the requested printing.