描述
Basic parameters
- Model: MD03
- Output channels: 5 channels 0-10V dimming output
- Product weight: 0.35kg
- Appearance size: 69 × 57 × 87mm
- Shell material: metal
- Installation method: distributed placement installation or DN35 rail installation
Technical specifications
- Communication protocol: Modbus RTU
- Baud rate: default 9600 (modifiable), 8 data bits, no verification, 1 stop bit (8N1)
- Operating temperature: -10 ℃~50 ℃
- Power supply voltage: DC 12-60V
- Drive capability: ≤ 50mA/channel
- Output voltage range: 0-10V
- Dimming accuracy: 255 level digital infinite dimming
Product features
- Multi device driver: Can connect multiple 0-10V dimming drivers to work simultaneously within the current range
- Smooth dimming: 255 level digital infinite dimming, smooth and natural brightness transition
- Group control: Supports branch group control, quickly realizes personalized scene control
- Dimming curve: Supports 25 segment dimming curve, adapts to various lighting characteristics
- industrial standardSupports Modbus RTU industrial control protocol for easy system integration
Detailed explanation of Modbus communication protocol
1. Basic communication parameters
- Protocol type: Modbus RTU
- Default slave address: 103 (modifiable)
- Default baud rate: 9600bps (can be modified to 4800/9600/19200/38400/57600/115200)
- Data format: 8-bit data bits, no checksum, 1-bit stop bit (8N1)
2. Register Mapping Table
register address
Name
data type
Value range
Explanation
0x0001
Device Address AD
16 Bit Unmatched
1-247
Device Modbus Address
0x0002
Baud rate BAUD
16 bit no match
1-6
1:4800,2:9600,3:19200,4:38400,5:57600,6:115200
0x0003
Power on status 1R
16 bit no match
0-1
Channel 1 power on status (0: off, 1: on)
0x0004
Power on status 2G
16 bit no match
0-1
Channel 2 power on status
0x0005
Power on status 3B
16 bit no match
0-1
Channel 3 power on status
0x0006
Power on status 4
16 bit unsigned
0-1
Channel 4 power on status
0x0007
power on status 5
16 bit unsigned
0-1
Channel 5 power on status
0x0008
Output brightness 1R
16 bit unsigned
0-255
Channel 1 brightness value (0-255 corresponds to 0-10V)
0x0009
Output brightness 2G
16 bit unsigned
0-255
Channel 2 brightness value
0x000A
Output brightness 3B
16 bit unsigned
0-255
Channel 3 brightness value
0x000B
Output brightness 4
16 bit unsigned
0-255
Channel 4 brightness value
0x000C
Output brightness 5
16 bit unsigned
0-255
Channel 5 brightness value
3. Function code description
Function code 03H: Read hold register
- Request format:
从站地址 | 功能码(0x03) | 起始地址高字节 | 起始地址低字节 | 寄存器数量高字节 | 寄存器数量低字节 | CRC16低字节 | CRC16高字节
- Response format:
从站地址 | 功能码(0x03) | 字节数 | 数据1高字节 | 数据1低字节 | ... | CRC16低字节 | CRC16高字节
Function code 06H: Write single register
- Request format:
从站地址 | 功能码(0x06) | 寄存器地址高字节 | 寄存器地址低字节 | 数据高字节 | 数据低字节 | CRC16低字节 | CRC16高字节
- Response format: Same as request
Function code 10H: Write multiple registers
- Request format:
从站地址 | 功能码(0x10) | 起始地址高字节 | 起始地址低字节 | 寄存器数量高字节 | 寄存器数量低字节 | 字节数 | 数据1高字节 | 数据1低字节 | ... | CRC16低字节 | CRC16高字节
- Response format:
从站地址 | 功能码(0x10) | 起始地址高字节 | 起始地址低字节 | 寄存器数量高字节 | 寄存器数量低字节 | CRC16低字节 | CRC16高字节
4. Communication Example
Example 1: Read the brightness values of channels 1-5
- Request:
67 03 00 08 00 05 1D C9
- Slave address: 0x67 (103)
- Function code: 0x03 (read hold register)
- Starting address: 0x0008
- Number of registers: 0x0005
- CRC16: 0xC91D
- Response:
67 03 0A FF 00 FF 00 FF 00 FF 00 00 00 XX XX
- Slave address: 0x67
- Function code: 0x03
- Byte count: 0x0A (10 bytes)
- Data: Channel 1=255 (0x00FF), Channel 2=0 (0x0000), Channel 3=255, Channel 4=0, Channel 5=0
- CRC16: XX XX
Example 2: Set the brightness of Channel 1 to 128
- Request:
67 06 00 08 00 80 1C 3A
- Slave Address: 0x67
- Function Code: 0x06 (Write Single Register)
- Register Address: 0x0008
- Data: 0x0080 (128)
- CRC16: 0x3A1C
- Response: Same as Request
19] Power wiring
- Power wiring:
- Power supply: DC 12-60V
- Connected to the power input terminal of the module
- 0-10V output terminal:
- 5 channels of 0-10V output terminals are respectively connected to the control input terminal of the dimming drive
- Maximum driving capacity of 50mA per channel
- Communication wiring:
- RS485 interface: A (+), B (-)
- It is recommended to use twisted pair shielded wire, with a terminal resistance of 120 Ω at both ends of the bus
- Typical wiring diagram:
[VGA]---[调光驱动1]---[灯具1]
[B]-----[调光驱动2]---[灯具2]
[IR]----[调光驱动3]---[灯具3]
[2G]----[调光驱动4]---[灯具4]
[3B]----[调光驱动5]---[灯具5]
Application scenarios
- Smart home: achieve full house lighting scene control
- Commercial lighting: Intelligent dimming for shopping malls, hotels, office buildings, and other places
- Industrial lighting: Large area lighting control for factories, warehouses, and other places
- Professional places: Museums, galleries, theaters, and other places that require precise light control
| register address | Name | data type | Value range | Explanation |
|---|---|---|---|---|
| 0x0001 | Device Address AD | 16 Bit Unmatched | 1-247 | Device Modbus Address |
| 0x0002 | Baud rate BAUD | 16 bit no match | 1-6 | 1:4800,2:9600,3:19200,4:38400,5:57600,6:115200 |
| 0x0003 | Power on status 1R | 16 bit no match | 0-1 | Channel 1 power on status (0: off, 1: on) |
| 0x0004 | Power on status 2G | 16 bit no match | 0-1 | Channel 2 power on status |
| 0x0005 | Power on status 3B | 16 bit no match | 0-1 | Channel 3 power on status |
| 0x0006 | Power on status 4 | 16 bit unsigned | 0-1 | Channel 4 power on status |
| 0x0007 | power on status 5 | 16 bit unsigned | 0-1 | Channel 5 power on status |
| 0x0008 | Output brightness 1R | 16 bit unsigned | 0-255 | Channel 1 brightness value (0-255 corresponds to 0-10V) |
| 0x0009 | Output brightness 2G | 16 bit unsigned | 0-255 | Channel 2 brightness value |
| 0x000A | Output brightness 3B | 16 bit unsigned | 0-255 | Channel 3 brightness value |
| 0x000B | Output brightness 4 | 16 bit unsigned | 0-255 | Channel 4 brightness value |
| 0x000C | Output brightness 5 | 16 bit unsigned | 0-255 | Channel 5 brightness value |
从站地址 | 功能码(0x03) | 起始地址高字节 | 起始地址低字节 | 寄存器数量高字节 | 寄存器数量低字节 | CRC16低字节 | CRC16高字节
从站地址 | 功能码(0x03) | 字节数 | 数据1高字节 | 数据1低字节 | ... | CRC16低字节 | CRC16高字节
从站地址 | 功能码(0x06) | 寄存器地址高字节 | 寄存器地址低字节 | 数据高字节 | 数据低字节 | CRC16低字节 | CRC16高字节
从站地址 | 功能码(0x10) | 起始地址高字节 | 起始地址低字节 | 寄存器数量高字节 | 寄存器数量低字节 | 字节数 | 数据1高字节 | 数据1低字节 | ... | CRC16低字节 | CRC16高字节
从站地址 | 功能码(0x10) | 起始地址高字节 | 起始地址低字节 | 寄存器数量高字节 | 寄存器数量低字节 | CRC16低字节 | CRC16高字节
67 03 00 08 00 05 1D C9
67 03 0A FF 00 FF 00 FF 00 FF 00 00 00 XX XX
67 06 00 08 00 80 1C 3A
[VGA]---[调光驱动1]---[灯具1]
[B]-----[调光驱动2]---[灯具2]
[IR]----[调光驱动3]---[灯具3]
[2G]----[调光驱动4]---[灯具4]
[3B]----[调光驱动5]---[灯具5]





