Product Overview
The FEETECH SM29-24MB is a compact industrial-grade smart servo designed for PLC automation systems, robotic devices, and intelligent motion control applications. Featuring Modbus-RTU RS485 communication, a 12-bit high-precision magnetic encoder, and brushless motor technology, this servo delivers stable 360° closed-loop control with excellent durability and precision.
Supporting industrial communication protocols and multi-servo networking, the SM29-24MB is suitable for automation equipment, robotic systems, AGV platforms, and embedded control projects requiring reliable RS485 servo control.

Key Features
Industrial Modbus-RTU Communication
Supports RS485 Modbus-RTU protocol for PLC systems, industrial controllers, and multi-node servo networking.
360° Closed-Loop Motion Control
High-precision magnetic encoder supports multi-turn positioning and accurate motion feedback.
Brushless Motor Design
Brushless motor structure provides:
- Longer service life
- Lower maintenance
- Higher efficiency
- Reduced heat generation
- Stable continuous operation
Compact Industrial Structure
Compact 40 × 28 × 42.3mm size allows installation in robotic joints, automation systems, and embedded motion platforms.
High Precision Magnetic Encoder
12-bit magnetic encoder provides:
- 0.088° position resolution
- Smooth control response
- Stable positioning accuracy
Full Steel Gear Transmission
High-strength steel gears improve:
- Wear resistance
- Load capacity
- Long-term durability
Multi-Mode Control
Supports:
- Position servo mode
- Motor speed mode
Multi-Parameter Feedback
Real-time feedback includes:
- Position
- Speed
- Current
- Voltage
- Temperature
Applications
- PLC automation systems
- Industrial robotics
- AGV robots
- Smart machinery
- Conveyor systems
- Intelligent manufacturing
- Robotic joints
- Embedded motion control
- Research equipment
- Automation teaching platforms
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | SM29-24MB |
| Communication Protocol | Modbus-RTU RS485 |
| Motor Type | Brushless Motor |
| Operating Voltage | 9V–24V |
| Weight | 102g |
| Dimensions | 40 × 28 × 42.3mm |
| Position Sensor | 12-bit Magnetic Encoder |
| Position Resolution | 0.088° |
| Gear Reduction Ratio | 1:241 |
| No-load Current | 130mA @24V |
| Static Current | 35mA @24V |
| Stall Current | 600mA @24V |
| Stall Torque | 12kg.cm @24V |
| Rated Torque | 6kg.cm @24V |
| Maximum Speed | 102RPM |
| Communication Baud Rate | 300–256000bps |
| Control Frequency | 333Hz |
| Operating Temperature | -20°C to 60°C |
| Control Modes | Position Servo / Motor Mode |
| Connector Type | ABVG RS485 Interface |
Interface Definition
| Pin | Function |
|---|---|
| PIN1 | GND |
| PIN2 | VCC |
| PIN3 | B |
| PIN4 | A |
Package Includes
- 1 × FEETECH SM29-24MB Smart Servo
- Servo Horn
- Mounting Hardware
- Connection Cable
