Handshaking; Figure 10: No Handshaking; Figure 11: Busy/Ready Communication - Opticon OPV 1001 Specification Manual

Handshaking

8.1.7.
Select handshaking options using the menu or command listed below.
Handshaking
No handshake
BUSY/READY
MODEM
ACK/NAK
ACK/NAK NO RESPONSE
a) No Handshaking
The scanner attempts the communication regardless of the state of the
host computer.
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.
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
Menu/Command
P0
P1
P2
P3
P4

Figure 10: No handshaking

Figure 11: Busy/Ready communication

18
Opticon
OPV 1001
Specifications Manual