4-channel Ethernet relay control board DAM0400-NET

Product Features

DC7-30V wide voltage power supply
The communication interface supports Ethernet ports.
Supports standard Modbus protocol RTU format
Equipped with flashing and breaking functions, it can include parameters in the command and operate the relay to automatically turn off after a period of time;
Equipped with strobe function, it can control the periodic switching of relays;
Relay output contact isolation

PRODUCT FUNCTION

Four way relay control
Remote control through network

Product Selection

Main parameters

Hardware connection instructions:

Configuration software instructions

Use the "Ethernet Configuration Software" (available for download) to configure the device address and network communication mode of the device.

For detailed configuration methods, please refer to the "Ethernet Configuration Software User Manual" document.

Software download address:http://www.juyingele.com.cn/software/jynet/ Ethernet to serial port configuration software. rar

Working mode description

The working modes are divided into four major modes: TCP Client, TCP Server, UDP Client, and UDP Server.

Introduction to Relay Flashing and Breaking Function

Manual mode: For each operation of the relay, the relay will flip once (open when closed, close when open);

Flashing mode: For each operation of the relay, the relay will close for 1 second (actual time =set number * 0.1) and then automatically disconnect;

Flashing mode: For each operation of the relay, the relay will disconnect for 1 second (adjustable time) and then automatically close;

Example of Communication Instructions

This product supports standard Modbus instructions. For detailed instruction generation and parsing methods, please refer to the register table in this article and consult the "MODBUS Protocol Chinese Version" (available in the product download).

This product also supports Modbus RTU format.

Modbus Register Description

This control card is mainly a coil register, which mainly supports the following instruction codes: 1, 5, 15

Coil register address table:

remarks:

① Modbus device commands support the following Modbus addresses:

00001 to 09999 are discrete outputs (coils)

10001 to 19999 are discrete inputs (contacts)

30001 to 39999 are input registers (usually analog inputs) 40001 to 49999 are holding registers (usually storing device configuration information)

Using a 5-digit code format, the first character determines the register type, and the remaining 4 characters represent the address. Address 1 starts from 0, such as 00001 corresponding to 0000.

② Table of baud rate values correspondence

③ Relay status can be queried through address 30002 or address 00001--00002, but control can only use address 00001--00002.

The data length of 30002 address is 16 bits. It can represent up to 16 relays.

The corresponding results are as follows:

The bit 8 of the data in register 30009 is the same as the data in register 00001.

Similarly, the same goes for optocoupler input. The bit8 and bit9 of register 30003 and registers 10001 and 10002 correspond to the specified hardware.

The register address follows the naming convention of PLC, where the real address is obtained by removing the highest bit and then subtracting one.

Instruction generation instructions

Application example and explanation: In addition to the dip switch address, the default broadcast address for this device is 254. When there is only one device on the bus, there is no need to worry about the dip switch address. Simply use the 254 address. When there are multiple devices on the bus, select different addresses through the dip switch and send control instructions based on address differentiation.

Note: The RS232 bus is a 1-on-1 bus, which means there can only be two devices on the bus, such as a computer and a relay board. Only the 485 bus can mount multiple devices.

The instructions can be obtained through the debugging information of the "Juying Soaring DAM Series Configuration Software".

Instruction generation instructions: For instructions not listed in the table below, users can generate them themselves according to the Modbus protocol. For reading and writing relay coils, it is actually reading and writing coil registers in the Modbus register. The address of the relay register has been explained in the previous text, and users only need to generate read and write instructions for register operations. For example, reading or writing the status of relay 1 is actually a read/write operation on the coil register 0001 corresponding to relay 1.

Instruction Explanation:

Control 1 relay (taking the first circuit as an example, refer to this example for other channels)

Sending code: FE 05 00 00 FF 00 98 35

Relay card return information:

Return code: FE 05 00 00 FF 00 98 35

Relay inquiry

Query 4-channel relays

Sending code: FE 01 00 00 04 29 C6

Relay card return information:
Return code: FE 01 00 61 9C

Analysis of Flash Open and Flash Close Instructions
Flash development code: FE 10 00 03 00 02 04 00 04 00 0A 00 D8
Flashing sending code: FE 10 00 03 00 02 04 00 02 00 14 21 62

Return code: FE 10 00 03 00 02 A5 C7

Analysis of fully open and fully closed commands
Full development code: FE 0F 00 00 04 01 FF 31 D2
Total disconnection sending code: FE 0F 00 00 04 01 00 71 92

Complete disconnection and full open return code: FE 0F 00 00 04 40 07

Common problems and solutions:

1. Network cable connected device, unable to search for device:

Click on the start button in the DHCP service bar of the Ethernet configuration software to open it;
Check if the communication wiring is connected to the router or switch.

2. No action after sending the command

Check if the sent code is hexadecimal code;

Is the code correct.