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Configure Communication Settings

Before you can write or read data, both the serial port object and the device must have identical communication settings. Configuring serial port communications involves specifying values for properties that control the baud rate and the serial data format. The following table describes these properties.

Communication Properties

Property NameDescription


Specify the rate at which bits are transmitted


Specify the number of data bits to transmit


Specify the type of parity checking


Specify the number of bits used to indicate the end of a byte


Specify the terminator character


If the serial port object and the device communication settings are not identical, data is not readable or writable.

Refer to the device documentation for an explanation of its supported communication settings.