A technician is troubleshooting a laptop that is failing to communicate with an older CNC machine via a physical connection. The CNC machine uses a 9-pin port for communication purposes. Which of the following types of cable should the technician use to replace the defective one in order to re-establish a successful connection?
The CNC machine's 9-pin port is indicative of a serial connection, typically a DE-9 connector, which is associated with RS-232 communication standards. The correct answer is a 'Serial Cable (RS-232),' as this type of cable is designed for such 9-pin serial connections and is used for communication between computers and older peripheral devices like CNC machines.
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What is RS-232?
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Why is a 9-pin port associated with RS-232?
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What advantages does RS-232 have for legacy devices like CNC machines?