CHAPTER 3 INTERFACE
B-EP Series
3-12
3.2.5 CONNECTION SEQUENCE EXAMPLE (LABEL MODE)
< Normal transmission >
• When one packet is sent.
Printer
A link request is detected.
A link is established.
Within 40 msec.
Host
PAD
NAK
Normal reception (CRC OK)
ACK for the command process end is
transmitted.
Command packet
Start of command process
End of data storage or an issue
CK
EOT
CK
A link request is transmitted
every 50 msec. if the printer
sends no NAK.
Within 1 sec.
Within 1 sec.
Within 200 msec.
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