The **M2RS-60-R2** is a high-performance **Step-Servo Motor (Integrated Motor)** developed by Leadshine. It combines a stepper motor, an encoder, and a digital drive into a single unit, eliminating the need for external motor cables and reducing electronic interference. --- ## 1. Core Electronic Specifications The M2RS-60-R2 is built on the RS485 communication protocol and utilizes closed-loop control to prevent position loss. | Feature | Specification | | :--- | :--- | | **Input Voltage** | 24 - 48 VDC | | **Rated Torque** | 2.0 N.m (Newton-meters) | | **Communication** | Modbus RTU over RS485 | | **Encoder Resolution** | 1000-line (4000 counts/rev) | | **Peak Current** | Up to 6.0A | | **Frame Size** | NEMA 24 (60mm) | --- ## 2. Key Internal Electronic Components ### A. Integrated Digital Drive The "R2" designation indicates the Modbus RTU communication version. The internal PCB contains: * **Microcontroller (MCU):** Processes motion commands and manages the PID closed-loop algorithm. * **Power MOSFETs:** High-efficiency switching transistors that drive the motor phases with minimal heat generation. ### B. Feedback System (Encoder) Unlike traditional "open-loop" steppers, this unit contains a high-resolution optical or magnetic encoder. * **Function:** It constantly monitors the shaft position. * **Safety:** If the motor stalls or misses a step, the electronics detect the error and can trigger an alarm output. ### C. Communication Interface The motor features two RJ45 ports for RS485 daisy-chaining. * **Protocol:** Modbus RTU. * **Capacity:** Up to 31 axes can be controlled via a single PLC or PC serial port. --- ## 3. Wiring and I/O Pinout The electronic interface is typically divided into power and signal segments. | Connection Type | Pin Function | Description | | :--- | :--- | :--- | | **Power** | V+ / GND | DC power input (Recommended 36V or 48V). | | **RS485** | A / B | Differential signals for Modbus communication. | | **Digital Inputs** | IN1, IN2, etc. | Configurable for Origin, Limit, or Emergency Stop. | | **Digital Outputs** | OUT1 (Alarm) | Signals a fault or "In Position" state to the controller. | --- ## 4. Advantages of this Electronic Design 1. **Reduced EMI:** Since the drive-to-motor wiring is internal, there is significantly less electromagnetic interference compared to separate components. 2. **Compact Footprint:** Ideal for space-constrained applications like medical devices or small CNC machines. 3. **Variable Current Control:** The electronics automatically adjust current based on load, which lowers motor temperature and saves energy.