FX2N-20MT Programmable Logic Controller

The FX2N-20MT is a highly versatile programmable logic controller (PLC) designed for industrial automation applications. It offers a wide range of features and capabilities that make it suitable for various automation needs. Here’s a detailed breakdown of its features and functions:

Basic Functions:

1. Watchdog Function: The PLC supports a watchdog function, ensuring system stability and compatibility with the original design.
2. External Interrupt Support: It provides compatibility with the original setup and offers support for external interrupts. This includes pulse capture capabilities across six channels (X0-X5).
3. Password Protection: You can set a password (e.g., 12345678) to prevent program reading. While the program remains secure, software component data remains accessible. Password modification programs can clear this protection for convenience.
4. Component Compatibility: With the exception of the D register, all components maintain compatibility with the original design, ensuring a smooth transition and optimal performance.
5. Power Failure Data Retention: The PLC supports data retention after power failures, utilizing FLASH memory for consistent data integrity. Data is automatically checked upon power restoration.
6. Ladder Program Verification: You can verify downloaded ladder programs with ease, enhancing program reliability and accuracy.
7. Real-time Monitoring and Fault Detection: During program execution, the PLC checks program commands and component ranges. Any issues detected trigger corresponding fault reports, enabling timely intervention.
8. Run/Stop Indication: The PLC provides an intuitive operation interface with a clear status indication. In the RUN mode, the RUN light flashes, while switching to STOP mode turns off the RUN light.
9. Fault Notification: The PLC offers a clear indication of faults. Minor faults trigger the flashing of the ERR light, while serious faults keep the ERR light continuously illuminated.
10. Constant Scanning Mode: You can configure constant scanning mode using D8039 for scanning time and M8039 for scanning mode.

Optional Features:

1. High-speed Pulse Outputs: The PLC supports high-speed pulse outputs with the use of PLSY and PLSR commands. You can send pulses on up to four channels (Y0-Y3), with Y0 and Y1 reaching up to 200 kHz and Y2, and Y3 reaching up to 100 kHz. The specific output channels depend on the PLC configuration.
2. Real-Time Clock (RTC) Function: It supports RTC for accurate timekeeping. When protected by the password (e.g., 12345678), clock data remains secure from programming software modifications.
3. Encoder Input and High-Speed Counters: The PLC offers encoder input capabilities with support for two AB phase inputs. You can customize responses up to 60 kHz and choose between 2-fold or 4-fold frequency for enhanced accuracy. The SPD command (X0~X5: 6-way) and high-speed counters maintain compatibility with the original package.
4. Enhanced Communication: The PLC provides two communication ports, both supporting programming port protocol. You can use both serial ports simultaneously through programming software. The second channel offers versatility by supporting both programming port and MODBUS-RTU protocols, with baud rate flexibility.

The FX2N-20MT PLC empowers users to take control of their automation projects with confidence, offering enhanced security features and advanced communication capabilities, making it suitable for a wide range of industrial automation applications.