IOP351, IOP345 Metso METSO Controller, Shanghai Sijian Intelligent Technology Co., Ltd. is engaged in technology development, technical consultation, technology transfer in the fields of intelligent technology, information technology, and automation technology, as well as the sales of electrical equipment, automation equipment, electronic products, communication products, and electromechanical products. Industrial automation products include: PLC, DCS, sensors, frequency converters, encoders, relays, servo drives, soft starters, touch screens. Brands involved in the products include: Eurotherm, Schneider, Siemens, ABB, SICK, P+F, E+H, Yokogawa, Yamakawa, Mitsubishi, Emerson, Honeywell, FANUC, GE, Eaton Electrical, CT.
1. Determine I/O Devices
IOP351, IOP345 Metso METSO Controller Based on the functional requirements of the controlled object for the PLC control system, determine the user input and output devices required by the system. Commonly used input devices include buttons, selector switches, limit switches, sensors, etc., while commonly used output devices include relays, contactors, indicator lights, solenoid valves, etc.
2. Select the Appropriate PLC Type
Based on the identified user I/O devices, calculate the number of input and output signals required, and select the appropriate PLC type, including the choice of model, capacity, I/O modules, power supply modules, etc.
3. Allocate I/O Points
Allocate the input and output points of the PLC, and create an input/output allocation table or draw a wiring diagram for the input/output terminals. Then, PLC program design can proceed, along with the design of control cabinets or operator consoles and on-site construction.
4. Design the Ladder Diagram Program for the Application System
Based on the functional chart or state flow diagram, design the ladder diagram, i.e., program. This step is the core of the entire application system design and is also relatively challenging. To design a good ladder diagram, it is essential to be thoroughly familiar with the control requirements and have some practical experience in electrical design.