Honeywell THOR VM1, Reference Manual, Page: 29 / 324

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 VM1 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.
By default, Pin 9 is configured to p5V for an external bar code scanner. Pin 9 of COM1 or COM2 may also be
configured to provide RI.
If a COM port is not being used for a scanner, it can be used for screen blanking when the vehicle is in motion.
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
or
RI
Bar Code Scanner Power - 500mA max
or
Ring Indicator - Input
Shell CGND Chassis Ground
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