RS232 / RS485
Serial communication, the basic structure used to communicate between two systems. Assembly of the system as the basis of information encoded as a telegraph wire on the sending of two. Mutual information of two device sends encrypted and encoded information by analyzing the uses. Serial communication definition, defines the direction of the electrical system. Operating voltage of the line, cable properties, which will mean the value of which voltage and so on. In addition, the data sending rate, such as encoding of information is defined by this protocol. RS232 and RS485 is the most widely used in the two protocols. RS232 (-12V) - (+12 V) voltage in the range defined a protocol that allows the sending of more 115kbit/sn data. Virtually any device with serial communication capability is more widely available. At least one of the three wires to a common chassis, using the RS232 communication line can be established. However, the use of a common chassis and other features of the line because of the length of the line can be up to 15-20m. In addition, only two devices can work even. New protocols have been developed due to limitations of the RS232 standard. RS485'tir one of the most popular. Via two wire RS485 communication with each other to the opposite voltage protocol. According to the two wire elements on the voltage level of the driver makes the decoding process.Therefore, do not have to use a common chassis. In addition to electrical interference, and is more secure and allows you to connect up to 1000m. The most important rule to RS485 connection allows up to 32 units in the same line. Also called a repeater device further increases this number. Another point to realize the serial communication protocol in the data. Data protocol described above will be moved over the physical lines defines how the information flow. The speed of the two devices to communicate with the same communication protocol must be using the same data transmission. One electrical connection, even without the communication protocol is available from the same data.This is like one of the only English-speaking calls a Turkish telephone . Turkish English-speaking people, and the phone dials the number who drop by. At this point the electrical connection is ready. However, communication has not started yet. Parties began to talk to one of the eyebrow party is sent to a data package.However, voices from the other can not understand the Turkish language is spoken in a sentence. In other words understood by the receiver of information sent. Serial communication protocol in the same way data communication be provided if it is not the same. If we continue the same example, assuming the two sides spoke Turkish, the other party understands that from the sounds in Turkish language and sentence, a sentence that is said to give the necessary response. Thus, communication can be ensured. Using the same protocol as the communication rate must be the same.In the example above, even though both sides knew one of the parties Turkish talks so fast the other party will not understand what was said. It is the same for devices. To the use of different communication speed of communication can't be established. MRS manufactures rectifiers provide at least one RS485 serial port. This port (s) to the device with a remote control unit, PC, PLC and so on. rectifier devices connect to the process can perform the desired control. MRS on this serial port communication protocol developed by the data transmission is provided.Used when necessary in accordance with the system interfaces may be provided by MRS. If you are prompted to be commander in a single device from a PC, the necessary control software is provided by the MRS and the RS232 serial port is available. |