Programmable control PLC programming problem
Programmable control plc is an automatic control device commonly used in industry at present, generally composed of a main control module and several IO nodes. PLC's main control module is distributed with 2 to 3 kinds of communication interfaces, which can realize communication with CAN bus, Ethernet bus and serial bus. Secondly, the main control module is also responsible for the power supply requirements of the entire PLC device. Whether it is its own power supply support or its connection to the IO transceiver, if the main control module is powered off, then everything is over. The realization of the PLC function is mainly through various digital or analog IO function blocks. Some of these function blocks are integrated with the main control module, and some are separate. When they need to be combined, they are installed together. can. From a long-term perspective, a PLC capable of freely installing and removing IO has more development prospects. After all, its work adaptability is stronger. In order to catch up with the trend of the times and meet the needs of the majority of PLC users, Shenyang Guangcheng has also developed PLC equipment with independent intellectual property rights, namely GCAN-PLC series of medium-sized PLCs.
Shenyang Guangcheng Technology's GCAN-PLC series programmable control plc uses OpenPCS software, which is a host computer software developed by the German infoteam software (one party echelon software) company. The software supports the IEC 61131-3 standard. The specified 5 programming languages (SFC sequential function diagram, LD ladder diagram, FBD function block, ST structured text, IL instruction list) can be used for the development and download of PLC programs. In addition, many debugging functions (such as break) provided by OpenPCS Point, single step, monitoring, ...) makes debugging more convenient. It can also adjust and measure the cycle time.
With OpenPCS as a software function support, it also integrates three communication interfaces of CAN, serial port, and Ethernet. Shenyang Guangcheng Technology GCAN-PLC series of medium-sized PLCs have now become steel, petroleum, chemical, power, building materials, machinery manufacturing, automotive, light Ideal equipment for automation control in various industries such as textile, transportation, environmental protection and cultural entertainment. It consists of a programmable main control module (GCAN-PLC-400), several GC series IO modules (GC-1008, GC-3804, etc.) and a terminal terminal module. The GCAN-PLC-400 main control module can be connected to all GC series IO modules. The user can choose to expand the IO module according to the actual needs of the site. The number of expansion IO modules can reach 32. The GCAN-PLC-400 main control module supports automatic configuration. The user does not need to set parameters on the PC. The main control module will be automatically configured according to the front and rear positions of the inserted terminal module.
