Datalogic CBX800 Installation Manual page 16

CBX800 INSTALLATION MANUAL
Host RS232 Interface
The RS232 interface can be used for connections to the host computer allowing transmission of code data.
The following pins are used for RS232 interface connection:
Pinout
TX
RX
RTS
CTS
SGND
It is always advisable to use shielded cables. The overall maximum cable length must be less than 15 m (49.2 ft).
Figure 15 – RS232 Host Interface Connections Using Hardware Handshaking
The RTS and CTS signals control data transmission and synchronize the connected devices.
+ V
RTS
- V
+ V
TX DATA
- V
+ V
CTS
- V
If the RTS/CTS handshaking protocol is enabled, the reading device activates the RTS output to indicate a
message is to be transmitted. The receiving unit activates the CTS input to enable the transmission.
16
Function
Transmit Data
Receive Data
Request To Send
Clear To Send
Signal Ground
CBX800
START
OF
TRANSMISSION
DATA
TRANSMISSION
C1 C2
TRANSMISSION
STOPPED
ENABLED
DISABLED
IDLE
Figure 16 - RS232 Control Signals
USER INTERFACE
SGND RXD TXD
CTS RTS
SGND TX RX
RTS CTS
END
TRANSMISSION
DATA
TRANSMISSION
C5
C3 C4
ENABLED
OF
IDLE