FN-MD02 Modbus RTU Audio Player for Industrial Control Systems and Industrial Automation Equipment

Features

1). Adopts RS485 Modbus RTU communication protocol.

2). Possible to control multiple audio players by connection in parallel.

3). Built-in high quality MP3 decoder unit.

4). Built-in 16MBytes flash memory and supports max. 32GB micro SD card.

5). Equipped with a type-C USB connector, and load audio files to the internal flash memory/micro SD card directly via USB connection to computer.

    -The internal flash memory or micro SD card works as a USB flash drive on computer. No need any software/program.

6). Equipped with a class D 25watt x 2 amplifier that can drive max. two 25watts (4-8 ohms) speakers directly for left and right channels.

7). Adjustable sound volume through turning the balck potentiometer for the speaker output.

8). Equipped with a 3.5mm audio jack for stereo output that can drive an earphone directly or connect to an external amplifier.

9). Able to drive an external equipment like a warning light simultaneously when it is playing a sound.

10). Able to set different communication baud rates.

11). Wide range for power input.

Technical Parameters

1). Working voltage: DC 12V-40V (12V or 24V is preferable)

2). Working current:  ≥4500mA @12V (when it has two 25W speakers, and external load/warning light is not connected)

                                  ≥2250mA @24V (when it has two 25W speakers, and external load/warning light is not connected)

3). Output current to an external load/warning light: ≤1000mA

4). Power consumption: ≤50W ( (external load/warning light not included))

5). Internal flash memory size: 16MB

6). Audio format: MP3

Interfaces

Basic Connections

Easy to update audio files

Use an type-C USB data cable to connect it to computer (Windows preferable) to update audio files. The device will be detected as a USB flash drive on computer. Delete the sample audio files preloaded at factory for testing purpose and copy your own ones onto the memory. Please refer to the image as below.

Wiring Example for Multiple Devices

If you need to control multiple devices, you can refer to the parallel wiring example as below.

This wiring example shows that the devices are connected to a computer via a USB to RS485 converter. The yellow wire is for connecting the RS485 communication port A (+) from computer to the devices, while the green wire is for connecting the RS485 communication port B (-) from computer to the devices. Running a serial debugging software on computer, users can debug and test the device easily before applying it.