Using serial communication protocol
In simple terms, it is calculated as theĪs all the communication happens over theĬhannel in 0 and 1, Baud Rate and Bit Rate are the same. The unit of Baud Rate is bits/second (b/s). The rate of data transmission on the network is called Baud Rate. If theĬalculated and real parity bits don’t match, an error occurred and we actīaud rate is also known as Communication speed.
The receiver calculates parityįor the character and compares the result to the parity bit received. Sender calculates the parity bit and sends it. Parity bit is added to check whether corruption has occurred.Ĭommon forms of parity are: None, Even, and Odd. This is considered a MARK or positive voltage or a 1. This bit tells us that the last character was just This is considered a SPACE or negative voltage or a 0. Start bit : This is a synchronizing bit added just before eachĬharacter we are sending. The number of bits per second that are being transmitted or received. The different types of standard communication protocols support different speed (baud rate), distance(network length) and the number of connecting devices (nodes). When PLC modules are connected over the network, the standard communication protocols are used. Recommended Standard (RS-232, RS- 422, and RS-485) Protocols.HART- Highway Addressable Remote Transducer Protocol.FINS- Factory Interface Network Service Protocol.BSAP- Bristol Standard Asynchronous Protocol.SRTP- Service Request Transport Protocol.Many PLC suppliers still support these older physical, wired connections Different types of communication protocols used for the automation of processes in PLC.
These old, communication methods still have their place, as they allow quick and easy connections among a single supplier’s products. There are many old communication protocols still in use and widely getting used to expand network. The different types of available communication protocol helps to expand the device network by connecting and communicating with each other. Without communication protocol, devices can only be connected but not communicated. By using the communication protocols, two devices can connect and communicate with each other. The communication protocol is the media or channel between two or more communicating devices. The Communication protocols is the way to trans-receive the data with a set of rules that sends or receives between two or more devices.