OTHER BRANDS

Panasonic (NAiS / Panasonic Electric Works) FP2SH series PLC CPU module
Specific model: FP2-C2, material order number AFP2231
The brand marking on the early years was NAiS (Panasonic Electric Works’ industrial control brand), and later it was uniformly printed as Panasonic;
Derivative models of the same series: FP2-C2L, FP2-C2P, FP2-C3P. The main model in the figure, FP2-C2, is the standard CPU.
Hardware interface description (panel interface)
TOOL (round RS232 port): Programming download port, connects to computers, touch screens, uploads/download PLC programs, online monitoring;
COM (9-pin RS232 serial port): External communication, connects to upper computers, frequency converters, instruments, Modbus peripheral devices;
Panel indicator lights: RUN (running), PROG (programming), TEST (debugging), ERROR (fault), BATT (battery), ALARM (alarm);
Position switch: INIT (initialization), TEST (debugging), RUN (running), REMOTE (remote programming switch mode).
II. Core hardware performance
Computing speed: Basic logic instructions are only 0.03 μs per instruction, high-speed processing, 20k-step program scanning is only 1ms;
Program capacity: Maximum 60K-step program storage, combined with large-capacity data registers;
Expansion capability: Can be equipped with digital input/output, analog input/AD/DA, high-speed counting, positioning pulses, communication intelligent modules, expanding thousands of points of IO;
Built-in functions: Comes with high-speed pulse positioning, PID temperature control, high-speed counting, interrupts, Modbus-RTU/ASCII communication;
Power supply: Backplane 24V bus power supply, lithium battery saves program and register data.
III. Core purposes (FP2-C2 is the main control core of the entire FP2SH medium-sized PLC)

1. Equipment automation logic control (core function)
   As the brain of the entire PLC, executes ladder diagram programs, completes all the logic of the equipment:
   cylinders, solenoid valves, motor start/stop, conveyor belts, limit switches, safety door interlocks;
   automatic circulation processes, process switching, counting, alarms, fault judgment.
2. High-precision motion positioning control
   Combined with pulse output module, controls servo/step motors to achieve precise positioning, synchronization, interpolation:
   labeling machines, cutting machines, mechanical hand transplanting, drilling equipment, winding machines, packaging equipment.
3. Analog quantity acquisition and temperature control
   Combined with AD/DA module to acquire temperature, pressure, liquid level, voltage, and has built-in PID automatic regulation for heating, frequency conversion, valves.
4. Multi-device communication networking
   Dual RS232 serial ports achieve multi-device intercommunication:
   upper computers / touch screen human-machine interface (HMI) read/write parameters, monitoring screens;
   and frequency converters, temperature control instruments, instruments, other PLCs for Modbus communication;
   support remote modem dial-up remote debugging, equipment operation and maintenance.
5. Mainstream industry application scenarios
   Packaging printing: pillow packaging machines, slitting machines, color printing, bag-making machines;
   3C electronic equipment: automatic assembly machines, dispensing, screw locking, test fixtures;
   textile machinery: warp knitting machines, winding, cutting equipment;
   small machine tools / woodworking machinery: engraving, drilling, cutting feed axis;
   line automation: loading and unloading transplanting, conveying sorting, three-dimensional storage;
   lithium battery / photovoltaic equipment: small winding, sorting, cutting fixtures. Additional Explanation
   FP2SH is a medium-sized modular PLC from Panasonic. FP2-C2 is the standard mainstream CPU of this series. It has been discontinued and most of the currently available ones on the market are dismantled second-hand spare parts. It is widely used for replacing components in old imported automated equipment.