Default COM Port Number Assignments

January 2011

The default state of the COM port numbers on our rugged handheld computer products vary between models. Some COM port numbers do not have a default state so are available for use as a virtual port for a Bluetooth, card adapter (PCMCIA, CF, SDIO, etc.), or USB Host client device. In most cases, each COM port number is independent and more than one can be in use at any given time. Refer to the below tables for the default state of the COM port numbers on each rugged handheld model. In some cases, the state of a COM port number can potentially be changed in settings (such as in the Control Panel) or by editing the Windows registry.

 

Allegro 2 and Archer 2

 

COM 0 Virtual port (sometimes Bluetooth DUN (Dial-Up Networking))
COM 1 RS-232 hardware port
COM 2 Virtual port (Default as GPS Program port)
COM 3 Expansion port (such as barcode, virtual port when not installed)
COM 4 Expansion port (such as GNSS binary output, virtual port when no GPS installed)
COM 5 Available (for virtual port)
COM 6 Virtual port*
COM 7 Virtual port (sometimes USB Client (ActiveSync))
COM 8 GNSS receiver NMEA output hardware port (virtual port when no GPS installed)
COM 9 Available (for virtual port)
COM 10 Virtual port (sometimes Bluetooth AT Command Interpreter)

 

* Note - The USB Client (ActiveSync) virtual port was assigned to COM6 in OS release 1.2.6 or earlier, then to COM7 in OS release 1.3.5 and later. This only applies when the "Enable Advanced Network Functionality" checkbox is unchecked under Start > Settings > Connections > USB to PC icon.

 

Mesa Rugged Notepad

 

COM 0 Virtual port (sometimes Bluetooth DUN (Dial-Up Networking))
COM 1 RS-232 hardware port
COM 2 Virtual port (Default as GPS Program port)
COM 3 Expansion Pack port (virtual port when no pack installed)
COM 4 Available (for virtual port)
COM 5 Available (for virtual port)
COM 6 Virtual port (sometimes USB Client (ActiveSync))
COM 7 Internal GPS module hardware port
COM 8 Physical USB-to-Serial RS-232 port on Mobile Dock
COM 9 Physical USB-to-Serial RS-232 port on Mobile Dock
COM 10 Virtual port (sometimes Bluetooth AT Command Interpreter)

 

Archer Field PC with Microsoft Windows Mobile 6.1

 

COM 0 Virtual port (sometimes Bluetooth DUN (Dial-Up Networking) or AT Command Interpreter*)
COM 1 RS-232 hardware port
COM 2 Virtual port (usually CF card device)
COM 3 Available (for virtual port)
COM 4 Available (for virtual port)
COM 5 Available (for virtual port)
COM 6 Virtual port (sometimes USB Client (ActiveSync))
COM 7 Available (for virtual port)
COM 8 Available (for virtual port)
COM 9 Available (for virtual port)
COM 10 Virtual port (when visible in app)

 

*Note: To use BT DUN, you may need to move it such as to COM10 by editing the Windows registry as follows: [HKEY_LOCAL_MACHINE\ExtModems\bluetooth_dun] "port"="COM10:"

 

Allegro MX Field PC

 

COM 0 Virtual port (sometimes Bluetooth DUN (Dial-Up Networking))
COM 1 RS-232 hardware port
COM 2 Virtual port (sometimes USB Client (ActiveSync))
COM 3 Expansion Pod GPIO pins on ribbon cable connection
COM 4 Available (for virtual port)
COM 5 Virtual port (sometimes Bluetooth AT Command Interpreter)
COM 6 Available (for virtual port)
COM 7 Available (for virtual port)
COM 8 Available (for virtual port)
COM 9 Available (for virtual port)
COM 10 Virtual port (when visible in app)

 

TK6000 (Carlson Surveyor+) OEM Platform

 

COM 0 Virtual port (sometimes Bluetooth DUN (Dial-Up Networking))
COM 1 RS-232 hardware port
COM 2 RS-232 hardware port 2
COM 3 Expansion Pack port
COM 4 Virtual port (sometimes for cellular modem expansion pack)
COM 5 Virtual port (sometimes for RTK GPS expansion pack, Bluetooth AT Command Interpreter)
COM 6 Virtual port (sometimes for RTK GPS expansion pack)
COM 7 Virtual port (sometimes for RTK GPS expansion pack)
COM 8 Virtual port (sometimes for RTK GPS expansion pack)
COM 9 Available (for virtual port)
COM 10 Virtual port (when visible in app)

 

Archer Field PC with Microsoft Windows Mobile 5.0

 

COM 0 Virtual port (when visible in app)
COM 1 RS-232 hardware port
COM 2 Virtual port (usually CF card device, sometimes USB Client (ActiveSync))
COM 3 Virtual port (sometimes dynamically assigned to CF card device)
COM 4 Available (for virtual port)
COM 5 Virtual port (sometimes Bluetooth DUN (Dial-Up Networking))
COM 6 Available (for virtual port)
COM 7 Available (for virtual port)
COM 8 Available (for virtual port)
COM 9 Available (for virtual port)
COM 10 Virtual port (when visible in app)

 

Note: To use Bluetooth DUN (Dial Up Networking), you may need to enable the BT Command Interpreter, such as on COM0 by editing the Windows registry as follows: [HKEY_LOCAL_MACHINE\Software\Microsoft\BTHATCI] "Port"=dword:A

 

Allegro CX Field PC

 

COM 0 Virtual port (when visible in app)
COM 1 RS-232 hardware port
COM 2 RS-232 hardware port 2
COM 3 Expansion Pod GPIO pins on ribbon cable connection
COM 4 IrDA- Infrared (Can be disabled for BT)
COM 5 Raw IR (Can be disabled for BT)
COM 6 Virtual port (usually Bluetooth)
COM 7 USB Client (ActiveSync)
COM 8 Available (for virtual port)
COM 9 Available (for virtual port)

 

Allegro CE Field PC

 

COM 0 Virtual port (when visible in app)
COM 1 RS-232 hardware port
COM 2 RS-232 hardware port 2
COM 3 Expansion Pod GPIO pins on ribbon cable connection
COM 4 IrDA- Infrared (Can be disabled for BT)
COM 5 Raw IR (Can be disabled for BT)
COM 6 Available (for virtual port)
COM 7 USB Client (ActiveSync)
COM 8 Available (for virtual port)
COM 9 Available (for virtual port)

 

Allegro CE/DOS Field PC

 

COM 0 Virtual port (when visible in app)
COM 1 RS-232 hardware port
COM 2 RS-232 hardware port 2
COM 3 Expansion Pod GPIO pins on ribbon cable connection
COM 4 IrDA- Infrared
COM 5 Raw IR
COM 6 Available (for virtual port)
COM 7 Available (for virtual port)
COM 8 Available (for virtual port)
COM 9 Available (for virtual port)

 

Allegro DOS Field PC

 

COM 1 RS-232 hardware port
COM 2 RS-232 hardware port 2
COM 3 Expansion Pod GPIO pins on ribbon cable connection
COM 4 IrDA- Infrared
COM 5 Raw IR

 

Pro 4000/ 2000 Fieldbook

 

COM 1 RS-232 hardware port
COM 2 RS-232 or Parallel hardware port

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