Instruction manual

Data2 Command


Data2 Response(Ack)
End Command


End Response(Ack)
4.3 Normal phase 3
Host Direction Printer
Start Command


Start Response(Ack)
Data1 Command


Data1 Response(Ack)
Data2 Command



Wait Response
Wait 0.5sec(max)
Data2 Response(Ack)
End Command


End Response(Ack)
5. Abnormal transmission
5.1 Phase with no receive command over 3 times
Host Durection Printer
Command
(Wait 0.5sec )

Command
(Wait 0.5sec )

Command
(Wait 0.5sec )

(No action due to receipt
of no command)
The status is that obstacles or power of the printer is off.
The host indicate “no communication proceed”
5.2 Phase with no start command
Host Direction Printer
Start Command
(Wait 0.5sec )

(No action due to receipt
of no Command)
Start Command


Start Response(Nak)
Start Command


Start Response(Ack)
Data Command


Data Response(Ack)
End Command


End Response(Ack)
5.3 Phase 1 with no data command
Host Direction Printer
Start Command


Start Response(Ack)