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Today you will learn about RS232. It is a phrase you may hear fairly regularly in industry, especially by the older guys. Hopefully this video will clear some things up for you.
What exactly is RS232? First and foremost, it is a form of serial data transmission. Or simply put, it is a form of communication. Most people simply called it a serial connection.
What exactly is RS-232? First and foremost, it is a form of serial data transmission. Or simply put, it is a form of communication. Most people simply called it a serial connection.
At one time, it was the most used form of data transmission. You will probably recognize the standard 9 pin DB9 cable. Simply put, RS-232 transmits signals using a positive voltage for a binary 0 and a negative voltage for a binary 1. But what do the PLCs use RS232 for?
PLCs use RS232 to talk to other modules or even other PLCs. These modules can be anything that also uses RS232 such as, an operator interface or HMI, computers, motor controllers or drives, a robot, or some kind of vision system.
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