Toshiba B-EP Series Interface Specification page 67

[RECEIPT or ESC/POS mode]
A link request is transmitted
every 50 msec. if the printer
sends no NAK.
Command packet
(Within 1 sec.) (*1)
Command packet
(Within 1 sec.) (*1)
Command packet
(Within 1 sec.) (*1)
Within 1 sec.
*1: Example of command packets (in the RECEIPT mode) is shown below.
(When the length is designated in 1 byte and the printer ID of the command packet is 849.)
Command packet 1
[02H][03H][51H][FFH][59H][80H]
[1BH]W384[1BH]H000[1BH]3
[1BH]a1[1BH]![30H][1BH]O+010[1BH]L3360[0AH][1BH]KCSample[0AH][0AH][1BH]!
[00H][1BH]a0[1BH]KABITMAPFONT[0AH][1BH]![30H][1BH]KABITMAPFONT[0AH]
[1BH]![60H][1BH]KABITMAPFONT[0AH][0AH][1DH]w[02H][1DH]hp[1DH]H1
[1BH]O+000[1DH]k3*1234567890*[00H][0AH][0AH][0AH][1BH]O+100[1BH]L1210[0AH]
[1BH]![00H][1BH]a1[1DH]:12345678901234567890[0AH]12345678901234567890[0AH]
12345678901234567890[0AH]12345678901234567890[0AH]12345678
[25H][5DH]
Command packet 2
[02H][03H][51H][FFH][59H]
901234567890[0AH]12345678901234567890[0AH]12345678901234567890[0AH]12345
678901234567890[0AH]12345678901234567890[0AH]12345678901234567890[0AH]1234
56789012345678[0AH]#############[1DH]:[0AH][1DH]~ABCDEFGHIJKLM[00H][0AH]
[0AH][1BH]a[30H][1BH]KVA030030OUTLINEFONT[0AH][1BH]KVB030030OUTLINEFONT[0AH]
[0AH][1DH]w[04H][1DH]hh[1DH]qM[1DH]r1[1DH]kT1234567890[00H][0AH]
[0AH][1DH]w[03H][1DH]h[03H][1DH]s[00H][1DH]c[01H][1DH]kP
[02H][93H]
Command packet 3
[02H][03H][51H][55H][59H][02H]
123456789012345678901234567890123456789012345678901234567890[00H]
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
3-36
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.