Citizen pmn User Manual page 91

* ETX-STX Mode
STX/ETX Mode Start
Sends ENQ
Receives Status
NO
Data Buffer Empty ?
Sends STX
Odd Parity Check ?
Sets Test Byte To
FFH
Exclusive ORs Test Byte
and Sent Data
Sends Data to Printer
NO
Last Data in 1 Block ?
YES
NO
YES
Sets Test Byte To
00
Test Byte
YES
1
Sends ENQ
Receives Status
Receives Check Byte
Status Error ?
Check Byte
= Test Byte ?
Sends ETX
STX-ETX
Mode End
STX-ETX Mode Data
Block Ready to Send ?
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iDP3410 User's Manual
1
YES
YES
NO
NO
Sends CAN
(Print)
YES
NO
RET
CITIZEN