
Opticon
OPV 1001
Specifications Manual
18
8.1.7.
Handshaking
Select handshaking options using the menu or command listed below.
Handshaking Menu/Command
No handshake
P0
BUSY/READY P1
MODEM P2
ACK/NAK P3
ACK/NAK NO RESPONSE
P4
a) No
Handshaking
The scanner attempts the communication regardless of the state of the
host computer.
Figure 10: No handshaking
b) BUSY/READY
The scanner and the host computer notify each other of their state and
whether they can receive data with BUSY/READY through an RTS line.
They can communicate state to each other through a CTS line when
connected as in the following figure.
Figure 11: Busy/Ready communication
The scanner stays ON (is able to receive data) except during certain parts
of the process, such as receiving data (buzzer command execution),
transmitting data, and menu processing. The scanner checks the CTS line
before transmitting data. When it is ON, the scanner transmits data. When
it is OFF, the scanner waits for it to turn ON within a set time. The scanner
will abort transmission with an error indication (buzzer) when the CTS line