Opticon OPR 2001 User Manual
Page 21
Opticon
OPR 2001
Specifications Manual
21
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 12: 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 is not ON
within a specified period. The Flow Control time-outs are as follows, and the
default setting is “indefinitely“ (I0).
Flow Control Time Out
Menu/Command
Indefinitely I0
100 ms
I1
200 ms
I2
400 ms
I3
Figure 13: Cannot receive command