Toshiba B-EP Series Interface Specification page 50

• When several packets are sent (for storing a form or graphics, or printing data).
A link request is transmitted
every 50 msec. if the printer
sends no NAK.
Within 1 sec.
Within 1 sec.
Within 1 sec.
Within 1 sec.
Host
PAD
Command packet
Command packet
Command packet
EOT
Printer
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.
ACK
ACK for the command process end is
transmitted.
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CHAPTER 3 INTERFACE
A link request is detected.
A link is established.
Start of command process
End of data
storage/issue
B-EP Series