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Lists the valid status of communication with GPS. Positive value means 'Connection is open'. Zero or negative value means 'connection is closed'. A negative value is an error code.
| Constant | Value | Description | 
|---|---|---|
| esriGpsConnectionErrorNone | 0 | Connections was sucessful. | 
| esriGpsConnectionErrorCommportInUse | 1 | Com port is already opened by another application. | 
| esriGpsConnectionErrorCommportNotSupported | 2 | Com port is not supported by the hardware. | 
| esriGpsConnectionErrorInApplication | 3 | An application error occurred while opening the connection. | 
| esriGpsConnectionErrorUnableToCommunicateToDevice | 4 | Unable to communicate with the device. | 
| esriGpsConnectionErrorInsufficientData | 5 | Insufficient data to open the connection. |