iDP3550/3551 User ’s Manual
*ETX-STX Mode
STX/ETX Mode Start
Sends ENQ
Receives Status
NO
Data Buffer Empty ?
YES
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| Odd Parity Check ? |
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| YES |
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| Sets Test Byte To |
| Sets Test Byte To | |||||
| FFH |
| 00 |
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Exclusive ORs Test Byte
and Sent Data
Test Byte
Sends Data to Printer
NO
Last Data in 1 Block ?
YES
1
1
Sends ENQ
Receives Status
Receives Check Byte
Status Error ?
NO
Check Byte
=Test Byte ?
YES
Sends ETX
(Print) |
Mode End
YES
YES
NO
Sends CAN
NO
RET
86 | CITIZEN |
