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36
External Connectors
VX6 Reference Guide
E-EQ-VX6RG-F
Printer/PC Serial Connector (COM3)
The serial connector (labeled “COM2/3”) is an industry-standard RS-232 9-pin “D” connector.
The connector and its pin assignments are shown below. By default, Pin 9 provides RI. Pin 9
may also be configured to 5 VDC at 0.4A (max) for an external bar code scanner. Refer
to Chapter 4, “Scanner”, section titled “Serial Port Pin 9” for more information on configuring Pin
9.
1
5
9
6
Figure 2-4 Printer/PC Serial Connector (COM3)
Note:
Power the VX6 off before attaching a cable or device to the COM3 serial port.
Pinout
Pin Signal Description
1
DCD
Data Carrier Detect – Input
2
RXD
Receive Data – Input
3
TXD
Transmit Data – Output
4
DTR
Data Terminal Ready – Output
5 GND
Signal/Power
Ground
6
DSR
Data Set Ready – Input
7
RTS
Request to Send – Output
8
CTS
Clear to Send – Input
9 RI
or
+5VDC
Ring Indicator – Input (default)
or
Bar Code Scanner Power – 400mA max
Shell CGND Chassis
Ground
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