External Connectors 21
E-EQ-VX5RG-G-ARC VX5 Reference Guide
Printer/PC Serial Connector (COM2)
The COM2 serial connector, with either a “COM2” or a “COM2/3” label, is an industry-standard
RS-232 9-pin “D” connector. The connector and its pin assignments are shown below.
1
5
96
Figure 2-4 The Printer/PC Serial Connector (COM2)
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
Note: Pin 9 of the COM port can be switched between +5V and RI. See Chapter 3: “System
Configuration” section titled “Serial Port Pin 9”.
