7167 Owner’s Manual Chapter 6: Commands
November 2003
234
Data transmission by this command is controlled by the ESC/POS handshaking protocol. The
ESC/POS handshaking protocol is defined as the protocol that the printer receives as a response
from the host after the [Header-NUL] is transmitted: then it performs the following process,
corresponding to the response.
When the identification status (existence of the next data block) is
Hexadecimal = 41H/Decimal = 65
Response
ASCII HEX Decimal Process Performed
ACK 06H 6 Transmits the next data block
NAK 15H 21 Transmits the previous data block again
CAN 18H 24 Cancels the process
When the identification status (for the previous data block) is
Hexadecimal = 40H / Decimal = 64
Response
ASCII HEX Decimal Process Performed
ACK 06H 6 Ends the process
NAK 15H 21 Transmits the previous data block again
CAN 18H 24 Cancels the process
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