Serial Connector (Com1 And Com2); Pinout - Honeywell THOR VM2 Reference Manual

Serial Connector (COM1 and COM2)

The COM1 and COM2 connectors are D-9 male connectors located on the back of the Quick Mount Smart Dock.
Power the Thor VM2 off before attaching a cable to any port (serial, USB, Audio/CAN, etc.).
The serial connectors are industry-standard RS-232, PC/AT standard 9–pin "D" male connector.
Pin 9 is configured to provide +5V for an external bar code scanner.
If a COM port is not being used for a scanner, it can be used for

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 +5VDC Bar Code Scanner Power - 500mA max
Shell CGND Chassis Ground
screen blanking when the vehicle is in motion.
2-9