Advertisement
Scanner Interface
A.1.2
Control Interface Signals
Host
computer
(1)
Send data (T/D)
This signal is the response and acknowledge for the command sent on the R/D line.
(2)
Received data (R/D)
This line sends the command and acknowledge for a response.
(3)
Send request (RTS)
This line sends a request to send a response and acknowledge for the command.
(4)
Transmission enabled (CTS)
This line sends an acceptance of RTS signal.
(5)
Terminal ready (DTR)
This signal indicates that the scanner is ready for transmission and reception. This signal is set to off when
the scanner is turned off, when the scanner is initially checked after power-on, or when a fault is detected.
(6)
Controller ready (DSR)
This signal indicates that the host computer is ready for transmission and reception.
Appendix A-2
T/D
R/D
R T S
C T S
D T R
DSR
Figure A.1.1 Control interface signal lines
Scanner
Advertisement
