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Communicate over Networks 35 Communicate with ASCII devices When configured for user mode, you can use the serial port to interface with ASCII devices. For example, you can use the serial port to: • read ASCII characters from a weigh scale module or bar code reader • send and receive messages from an ASCII triggered device, such as a MessageView terminal. connection from the serial port of the controller to the ASCII device Publication 1794-UM001G-EN-P - January 2007