Analog acquisition module output module 10AD+4DA module isolation 485 modbus-RTU configuration|ic0A4492|Electronic products

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Type:Logic ICs
Condition:New
Basic functions:Support standard MODBUS devices such as text, touch screen, PLC, etc.

10 way 4-20mA,0-5V, 0-10VCurrent analog acquisition12bitADCAccuracy,
4-way analog output (support 4-20mA, 0-5V, 0-10V)
1-way standard 485 communication port (supporting modbus-RTU protocol free port communication protocol)

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

Analog quantityInput and outputVC source code(clear notes):

// Read the status of a single register
//ip_Addr slave MODBUS address
//data_Addr Data Storage Register Address
UInt16 readBUF (byte ip_Addr, UInt16 data_Addr)
{
UInt16 crc; //check value
Byte [] MSG = new byte [8]; // instruction array

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
}

...More source code, please contact the seller after buying.

Analog acquisition module output module 10AD+4DA module isolation 485 modbus-RTU configuration

Price: $58.56

Analog quantityInput and outputVC source code(clear notes):

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