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简体中文Hydraulic double headed proportional solenoids and PLC communication interface compatibility
The compatibility of hydraulic double headed proportional solenoid valves with PLCs usually depends on the type of communication interface selected. Common interfaces include:
Analog signal interface: Common analog signals are 4-20 mA or 0-10 V. PLC controls the opening of the solenoid valve through these signal inputs or outputs, which is suitable for simple flow and pressure control.
Digital signal interface: includes switch output (such as relay contacts) or TTL level signals. This interface is suitable for simple on/off control.
Serial communication interface: such as Modbus RTU, CAN, RS-485, etc. These interfaces can realize multi-point connection and are suitable for more complex control requirements. Through serial communication, multiple solenoid valves can communicate with a single PLC, improving the flexibility of the system.
Ethernet communication: Modern hydraulic systems are increasingly using Ethernet technology, such as EtherCAT or PROFINET. These high-speed communication protocols can realize real-time data transmission and are suitable for demanding real-time control applications.
Control algorithm and logic
PLCs usually have powerful control algorithm capabilities, including PID control, fuzzy control, etc. Through compatibility with hydraulic dual-head proportional solenoid valves, the PLC can adjust the output of the solenoid valve in real time to meet changing system needs. For example, in dynamic load conditions, the PLC can adjust the PWM signal based on real-time feedback to optimize flow and pressure.
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