WB-MAO4 0-10V Modbus Analog Outputs/en

Диммер WB-MAO4

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Purpose

4-channel lighting control module is designed to control lamps with interfaces 0-10V, PWM, as well as to control arbitrary load with the corresponding inputs.

The type of output signal: 0-10V or PWM c with an amplitude of 10V. Type of output signals is configured (for all channels at once).

The module is controlled from the controller or PC via the RS-485 bus by MODBUS commands, as well as by external buttons.

Technical specifications

• 4 channels 0-10V or 10V PWM
• PWM frequency up to 400 Hz.
• Supply voltage: 11 to 24 V.
• Power consumption: 0.3 W.
• Interface: RS485, Modus RTU
• RS-485 interface parameters are set programmatically (see register Card);
  default: speed — 9600 bit/s; data — 8 bit; parity bit — no (N); stop bits — 2
• Save state when power is off
• Inputs for three buttons for channel control
• Size– 65*35*7 mm.

Operating conditions

• Air temperature from -40°C to +70°C;
• Relative humidity up to 95%, without moisture condensation.

Connection

The module is made in the unselfish version - the board is in a shrink tube.

RS-485 and control buttons are connected to the blue terminals:

• A and B - RS485 signal lines

• GND - ground RS-485 bus (if any)

• b1 and GND - color balance control button

• b2 and GND - brightness control button

Management

Bus parameters

Speed is 9600 bit/s, data - 8 bit, parity – no, stop bit - 2.

Commands supported by device

Command	command (dec)
READ_COIL	1
WRITE_SINGLE_COIL	5
WRITE_MULTI_COILS	15
READ_HOLDING_REGISTERS	3
WRITE_SINGLE_REGISTER	6
WRITE_MULTI_REGISTERS	16

Functions

Address change is broadcast (slave_id 0) team record (WRITE_SINGLE_REGISTER) to holding register with address 128 (0x80).

6 bytes signature lies at the address 200. The signature is unique for each device model and allows you to identify the model. To obtain the signatures necessary to fulfill READ_HOLDING_REGISTERS address 200 length 6. Writing to this area of memory is not supported and error 3 is returned when attempting to write to an invalid location.

LED control

The brightness of the channel is set by an 8-bit number (0-255). The physical brightness of the LEDs is set according to the logarithmic dimming curve.

The module uses pulse width modulation (PWM), bit depth: 12 bit, PWM frequency: 24 kHz.

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The module has inputs for three hardware buttons.

Button 1. Short press – turns all channels on/off. Long press – smoothly change the brightness of all channels.

Button 2. Long press the button – smooth color change.

You can disable channel management using the buttons by writing 255(0xFF) to HOLDING_REGISTER at address 5.

In any operating mode, the current status of the buttons can be read from HOLDING_REGISTER at 6 and 7. 0 - button unpressed, 1 - pressed.

Register map

Register / address	type	read-write	default	format	Purpose	Note
0	holding	RW	-	0-255	Channel level G, logarithmic curve
1	holding	RW	-	0-255	the Level of the R channel, the logarithmic curve
2	holding	RW	-	0-255	Channel B Level, logarithmic curve
5	holding	RW	0	0: standard mode, 0xFF: disable control	button operation mode
6	input	R		1 - pressed, 0 - unpressed	the state of the button 1
7	input	R		1 - pressed, 0 - unpressed	button status 2
9	holding	RW	74 (312.5 Hz)	freq = 24 kHz / (value + 1)	PWM frequency
13	holding	RW	100	x 10ms	Smooth color change time
0	coil	RW	0	0: 0-10V 1: PWM 10V	Output mode
120 (0x78)	holding	RW	0	0	write to the register causes a stateless reboot of the module	not supported
121 (0x79)	input	R	-	mV	current supply voltage of the module	not supported
128 (0x80)	holding	RW	1		Modbus device address	everything
200-206	input	R	{'W','B','M','A,'O', 0}	| / | signature	everything
220-241	input	| | | _date__ _time__	firmware build date	everything