Connection Sequence Example (Tpcl, Receipt Or Esc/Pos Mode) - Toshiba B-EP Series Interface Specification

3.2.6

CONNECTION SEQUENCE EXAMPLE (TPCL, RECEIPT OR ESC/POS MODE)

The transmission control is basically the same as in the LABEL mode. Below is an example of
the setting method for the flag of each command packet.
A link request is transmitted
every 50 msec. if the printer
sends no NAK.
Command packet
(Within 1 sec.)
Command packet
(Within 1 sec.)
Command packet
(Within 1 sec.)
Within 1 sec.
Host
PAD
STX ID ID Length Y 80H
STX ID ID Length Y 81H
STX ID ID Length Y 02H
EOT
Command & Data CRC CRC
Command & Data CRC CRC
Command & Data CRC CRC
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CHAPTER 3 INTERFACE
B-EP Series
Printer
A link request is detected.
A link is established.
NAK
Within 40 msec.
Normal reception (CRC OK)
ACK Within 200 msec.
Normal reception (CRC OK)
ACK
Within 200 msec.
Normal reception (CRC OK)
ACK
Within 200 msec.
Start of command process
End of command process
ACK
ACK for the command process
end is transmitted.