Analog Output Module 10AD+2DA Isolates 485 modbus-RTU Positive and Negative 5V Input | Электронные компоненты и

Analog Output Module 10AD+2DA Isolates 485 modbus-RTU Positive and Negative 5V Input | Электронные компоненты и

10-channel voltage (-5V~5V) signal input, analog acquisition12bitADCAccuracy,

Two Analog Output (0~5V)

1-way standard 485 communication port, optoelectronic isolation (supporting modbus-RTU protocol)

**************************************************************************************************************

MODBUS address1

Baud rate: 9600

8Bit data bits

1 bit stop bits

No check

30001-30010 analog inputs (0-4095 corresponding-5V-5V)

40001~40002Two analog outputs (0~4095 corresponds to 0~5V.)

**********************************************

Analog Signal Output uuuuuuuuuuuu06Signal function

06Number function numbers are used to write a single hold register.

1(Home Station Request Message)

Message content

length

Range of values

Example

Slave address

1byte

0x01~ 0x1F

0x01

Function code

1byte

0x06

0x06

Initial address

2byte

0x0000~ 0x0006

0x0000

Register value

2byte

0x0000~ 0x0FFF

0x07FF

CRCcheck

2byte

Protocol generation

0xCBBA

Note 1: For example, the main station requests message. Write No. 0 holding register is 0x1388, that is, set the output current of channel 1 to (2047/4096)*20=10mA (0-4095 corresponds to 0-20mA).

2(slave station normal response message)

Message content

length

Range of values

Example

Slave address

1byte

0x01~ 0x1F

0x01

Function code

1byte

0x06

0x06

Initial address

2byte

0x0000~ 0x0006

0x0000

Register value

2byte

0x0000~ 0x0FFF

0x07FF

CRCcheck

2byte

Protocol generation

0xCBBA

Multiple Channel Analog Output uuuuuuuuuuu16Signal function

16Number function numbers are used to write hold registers, such as two or more consecutive hold registers at a time.

1(Home Station Request Message)

Message content

length

Range of values

Example

Slave address

1byte

0x01~ 0x1F

0x01

Function code

1byte

0x10

0x10

Initial address

2byte

0x0000~ 0x00FF

0x0000

Register quantity

2byte

N

0x0002

Bytes

1byte

2*N

0x04

Register value

2*Nbyte

0x00000x07FF

CRCcheck

2byte

0x0000~ 0xFFFF

0xB1DF

Note 1: For example, two hold registers starting from 40001 are written to (0,2047) two values respectively. The module outputs voltage: 0V, 5V (or current: 0mA, 10mA) from the first and second channels.

2(slave station normal response message)

Message content

length

Range of values

Example

Slave address

1byte

0x01~ 0x1F

0x01

Function code

1byte

0x10

0x10

Initial address

2byte

0x0000~ 0x00FF

0x0000

Register quantity

2byte

N

0x0002

CRCcheck

2byte

0x0000~ 0xFFFF

0x41C8

MSG [0] = ip_Addr; //slave address
MSG [1] = 0x04; // Read a single register
MSG [2] = byte (data_Addr > 8); high bit of // register address
MSG [3]= (byte) data_Addr; low bit // register address
MSG [4] = 0x00; high bit of data length to read
MSG [5] = 0x01; the base length of the data to be read
CRC = CRC16 (msg, 6);
MSG [6] = byte (crc > 8); 8 digits higher in // check
MSG [7] = (byte) crc; //check low 8 bits

Comm.Write(msg); //Send Read Request Zheng

Receive_A_Frame(); //Receive the Zhen reply signal

// Add here: Judge the received data
}