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40
Sec
tion
3
Oper
ation
Flow Cha
rt
V500-R2 series
User’s Manual
Section 3
Function Explanation
Communication protocol
There are following two types of system to transmit the data read by the bar code
reader to the upper equipment.
Nonprocedural system (no protocol system)
The bar code reader transmits the data to the upper equipment and ends.
ACK/NAK system
This bar code reader waits for the upper equipment response after transmitting the data.
When ACK (06H) 1 byte is received from the upper equipment, buzzer sounds
indicating the normal finishing and ends data transmission.
When NAK (15H) 1 byte is received from the upper equipment data is transmitted
again. When the time-up time comes which is set beforehand, the time-up buzzer
sounds and the data transmission ends.
Data
End
Bar code reader
V500-R2 series
Upper equipment
Data
End
Bar code reader
V500-R2 series
Upper equipment
ACK
Data
Data
Data
Bar code reader
V500-R2 series
Upper equipment
ACK
ACK
Содержание V500-R2 Series
Страница 1: ...Z334 E1 01A Cat No Fixed Laser Type Barcode Reader User s Manual V500 R2 Series...
Страница 18: ...16 V500 R2 series User s Manual Introduction Contents Introduction MEMO...
Страница 36: ...34 Section 2 Installation V500 R2 series User s Manual Section 2 Wiring and Installation MEMO...
Страница 52: ...50 Section 3 Test Reading Function V500 R2 series User s Manual Section 3 Function Explanation MEMO...
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