Main Serial Interface
Reference Manual 29
Main Serial Interface
The optocoupled main serial interface is compatible with the following electrical
standards:
•RS232
• RS422 full-duplex
RS232 Interface
The main serial interface is used for communication with the Host computer and
allows transmission of code data.
It is always advisable to use shielded cables. The overall maximum cable length
must be le
ss than 15 m (49.2 ft).
The following positions of the CBX510 spring clamp connector (row 4) are used
for RS
232 interface connection:
RS232 Interface
The main serial interface is used for communication with the Host computer and
allows transmission of code data.
It is always advisable to use shielded cables. The overall maximum cable length
must be le
ss than 15 m (49.2 ft).
The following positions of the CBX510 spring clamp connector (row 4) are used
for RS
232 interface connection:
Name Function
SGND Signal ground (isolated)
TX Transmit
RTS Request to send
RX Receive
CTS Clear to send
As suggested above, the cable shield should be connected in the ‘Shield’ posi-
tion.
The RTS and CTS signals control data transmission and synchronize the con-
nected devices. If the RTS/CTS hardware protocol is enabled, the scanner acti-
vates the RTS output to indicate a message can be transmitted. The Host must
acti
vate the CTS input to enable the transmission.
RTS/CTS lines should only be connected if the Main serial port handshaking is configure
for Hardware (RTS/CTS) (see section ).
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