47
V400-R1CF/R1CS
User’s Manual
Section
3
Operatio
n Flow Chart
Section 3
Basic Knowledge of Operation
Communication protocol
The following two systems exist for transmitting the data read by the reader to the
equipment.
Nonprocedural system (no protocol system)
The reader transmits the data to the upper equipment and ends the communication.
ACK/NAK system
The reader waits for a response from the upper equipment after transmitting the data.
When ACK (06H) 1 byte is received from the upper equipment, a buzzer sounds
indicating normal finishing and ends data transmission.
When NAK (15H) 1 byte is received from the upper equipment, the data is transmitted
again. When the time-up time set beforehand comes, the time-up buzzer sounds and
the data transmission ends.
SCAN
OKING
Data
End
Multi-code reader
V400-R1CF/R1CS
Upper equipment
SCAN
OKING
Data
End
Multi-code reader
V400-R1CF/R1CS
Upper equipment
SCAN
OKING
Data
Data
Data
Multi-code reader
V400-R1CF/R1CS
Upper equipment
