Configuring serial port NMEA input in PolarView
Configuring serial port NMEA input in PolarView
April 17, 2012 03:12PM
Default PolarView configuration includes one serial port that is configured in autodetect mode. In autodetect mode PolarView will automatically search and begin using an existing serial port NMEA input. This mode of operation is usually sufficient for simple installations using a single GPS device.

If you would like to manually configure PolarView serial port, please follow these steps:

Step 1
Open PolarView Port Manager by selecting menu Ship: Port Manager
You will see a list of currently configured ports.

PolarView Port Manager port list

Each port has a type, user-defined name and state. State reflects current status or operation of a port.

INFO PolarView supports a number of network port types, in addition to serial ports. Configuring network ports is outside the scope of this article.

- To add a new port, press Add button.
- To configure existing port select it from the list and press Configure button.
- Port configuration dialog will pop up.

Step 2
In the port configuration dialog, you have a choice of a number of options:

- Port - select specific serial port from the drop down menu.
On Windows, you should see all currently available port values such as COM1, COM2 etc.
On MacOS you will see a list of port names such as /dev/tty.usbserial.
INFO You can also type a specific port name directly. This is particularly useful if you know what port will be available at a later time.

- Un-check Autodetect checkbox. This check box will prevent your manual port configuration from working.

- Speed - select specific baud rate for your serial port. 4800 is the most common for GPS devices. AIS receivers often use higher baud rate of 38400.

- Direction - check Input to process incoming NMEA sentences. Check Mux Out to send NMEA sentences from other ports into this port. Check NMEA Out to send PolarCOM generated NMEA sentences, such as autopilot control into this port.
- Activate on startup - check this option if you'd like the port to be automatically activated whenever you run PolarCOM

- Advanced button provides access to advanced port settings dialog. Under most circumstances you do not need to change these.
INFO Certain serial devices may require changing flow control mode. If serial device does not appear to work even when device name and baud rate settings are correct, you may want to try all of the 3 available flow control modes under this dialog.

Press Apply to save your port configuration.

Port configuration - Windows Port configuration - Mac

Step 3
In the port list select the port that you just created. Port status can be one of the following:
- Off - port is not currently running.
- Waiting - port was unable to open serial device and is waiting to retry.
- Running - port is currently operational.

If port is in an Off state, press Start button to activate it.
WARNING Note that port will not process any data until you start it.

Step 4
To verify that port is receiving data, open PolarCOM pop-up menu and seleect NMEA Terminal. Terminal window will show NMEA sentences being processed by all PolarCOM ports.

Sample NMEA Terminal output

WARNING Serial ports cannot be shared! Make sure no other process on the system is accessing the same serial port device simultaneously with PolarView. That includes any port monitoring applications provided by your GPS vendor.

Edited 7 time(s). Last edit at 05/30/2018 04:03PM by Polar Navy Support.
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