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Serial ports – Wavetronix Click 500 (programmable controller) (CLK-500) - Developer Guide User Manual

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In this chapter

˽ Connecting Virtual and Physical Serial Ports

˽ Configuring a Serial Port

˽ Transmitting Data

˽ Receiving data

˽ Example Code 7.1

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The Click500Serial library provides functions for managing the Click 500 serial ports. Vir-

tual serial ports provide a flexible interface to physical serial ports. Multiple physical serial

ports can be attached to a virtual serial port. After the virtual and physical serial ports are

connected, data can be transmitted or received on virtual serial ports (see Figure 7.1).

When you connect two or more physical serial ports to a virtual serial port, you have in es-

sence created a serial convertor. For example, if you connect an RS-232 port and an RS-485

port to the same physical port, then the data from one port will be automatically transferred

from one to the other. In addition, physical serial ports that are connected to the same vir-

tual serial port do not require the same configuration settings, which means you can also

convert from one baud rate to another.

Serial Ports

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