plc cpu common programming language

There in the plc cpu in a variety of programming languages, they are ladder language, Boolean mnemonic language, the language menu map, function block diagram language and structured description language statements. Ladder language and Boolean mnemonic language is the basic programming language, which is usually composed of a series of instructions, use these instructions to complete most simple control functions, for example, instead of relays, counters, timers complete plc cpu module sequence control and logic control etc., through the expanded or enhanced instruction set, they can also perform other basic operations. Function Charts language and sentence description language is an advanced programming language, it can be more efficient to perform the operation if necessary, for example, analog control, manipulation, newspaper printed statements and other plc digital input output io module basic programming language data can not be completed function. Function block diagram language in the form of a functional block diagram of the completion of the required control functions connected by way of a soft, it has not only been widely used in the programmable logic controller, while the programming and configuration of distributed control systems are also often be used, because it has to connect, easy to operate, easy to master, etc., for the majority of the engineering design and application staff favorite.