3 Channel 1Hz-20kHz Duty Cycle Frequency Adjustable PWM Square Wave Pulse UART RS232 RS485 Bus Modbus RTU Board

3 Channel 1Hz-20kHz Duty Cycle Frequency Adjustable PWM Square Wave Pulse UART RS232 RS485 Bus Modbus RTU Board

Features:

1 Working voltage: 5V (5V version), 8-24V (12V version);

2 Working current: 11-15MA;

3 MODBUS RTU command supports 03, 06, 16 function codes;

4 RS485/TTL232 interface optional

5 This module has a total of 3 independent PWM outputs, and the frequency and duty cycle can be set independently;

6 PWM frequency range 1Hz~20KHz, adjustment step 1Hz, accuracy 0.6%

7 The duty cycle range is 0%~100%, the adjustment step is 1%, and the accuracy is 0.6%

8 PWM is TTL level, the maximum driving current of single channel is 20MA, and the total maximum driving current of 3 channels is 28MA

9 Default baud rate 9600 N 8 1, baud rate and parity optional

10 If the setting is wrong, you can short-circuit "RESET" for 5 seconds to restore the factory settings

11 In MODBUS RTU command mode, up to 247 devices can be connected in parallel

12 Size: 31*15*6.2mm

13 Weight: 3 grams

Please refer to "PWM8A04 modbus rtu protocol" for usage instructions

Application:

1. LED dimming controller

2. DC motor & ster motor PWM debugging controller

3. SCR dimming controller

4. PLC industrial controller

Package List:

1*3 channel 1Hz-20kHz duty cycle frequency adjustable PWM square wave pulse signal

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