Binary is the Base-2 numbering system.Serial devices use Binary for communication, which consists of just two unique numbers: 0 and 1.However, I will try to keep it simple because you will definitely encounter these if you try to peek behind the curtins. It is also important to understand data formats if you really want to advance in serial communication. Due to multiple nodes ability, they are used in serial communication networks like Modbus RTU. They have greater noise immunity and support for multiple nodes. RS485 and RS422 are used to avoid some of the problems of RS232. The disadvantage are lack of noise immunity, ground loops issues and short distance. It is ideal for small packets of short distance communication between two nodes where speed of transmission isn’t of great importance. RS232 is commonly used for point-to-point wiring, one node directly connected to another node. The most common ways to do that are RS232, RS422 or RS485. The “Serial Communication” refers to the fact that bits are put on a low speed wire one after another where groups of bits are framed into bytes and specific bit patterns are used to identify the beginning and end of those bytes. I wrote couple of posts about serial communication already (you can find the links in reference section) and today I will continue that journey forward. I am positive that if you ask someone today, about serial, many will be stunned to know that there was life before Ethernet. I am talking about serial communication.įew days ago I saw a video on YouTube showing some kids reactions of using windows 95 and couple of them were scared when they saw the message “Its safe to turn off your computer now” (one was like, “was that not safe before?”), and I was thinking, really? was that so long ago? (Those days, we were worried when that message did not show up □ BTW you can search the video on YouTube.) No, that’s not what they are saying about me around the office (at least I hope not).
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