Epson TM-T90 Specification page 122

Confidential
• After [Header – NUL] is transmitted, the printer receives a response from the host;
then it performs the process defined in the response. See the tables below.
When the status (existence of the next data block) is
Hexadecimal = 41H / Decimal = 65,
Response
ASCII
ACK
NAK
CAN
When the status (existence of the last data block) is
Hexadecimal = 40H / Decimal = 64,
Response
ASCII
ACK
NAK
CAN
EPSON
Process performed
Decimal
6 Transmits the next data
21 Transmits the previous data
again
24 Ends the process
Process performed
Decimal
6 Ends the process
21 Transmits the previous data
again
24 Cancels the process
TITLE
TM-T90
Specification
(STANDARD)
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REVISION
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