Product Features

DC7-30V wide voltage power supply
RS485 communication isolation
The communication interface supports RS232 and RS485.
Supports standard Modbus protocol RTU format
You can set 0-255 device addresses, and the 5-digit address dip switch can set 1-31 address codes. For addresses greater than 31, they can be set through software.
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
Supporting baud rate: 2400480096001920038400 (can be modified through software, default 9600)

Product Selection

Main parameters

Interface Description

Connection

Relay wiring instructions

RS485 cascade connection method

Test software description

http://www.juyingele.com.cn/software/software/ Juying Soar DAM series configuration software tutorial. rar (software video tutorial link)

Software functions:

Relay status inquiry
Relay independent control
Analog reading
Switch status query
Debugging information query
Change of working mode
Setting of offset address
Relay overall control

Working mode functions and settings

Connected Device

http://www.juyingele.com.cn/software/software/ Juying Soar DAM series configuration software tutorial. rar (software video tutorial link)

Open the "Juying Soaring DAM Series Configuration Software"; Serial port setting column: Select the corresponding COM port of your computer for the serial port, choose the default baud rate of the device (9600) for the baud rate (before setting the baud rate yourself), fill in the device address as "254" (254 is the broadcast address of the device), select the corresponding device model, set the four parameters of the above device, click to open the serial port, and click the relay button "JD1". If the relay responds, the connection is successful.

Method for changing device address

Introduction to device address

Device offset address refers to offsetting based on the thin code switch address, with the specific relationship being: device address=dip switch address+offset address.

Reading device address

Click on 'Read Address' at the top of the software

Setting and Reading of Offset Address

Click on "Read" or "Set" after the offset address below the software to read or set the offset address of the device.

Introduction to the Address of the Device Dialing Switch

1. When all five dialing codes are dialed to the "ON" position, it is the address "31";

2. When all five dialing codes are dialed to the "OFF" position, it is the address "0";

3. The leftmost 1 is the binary lowest bit.

4. Address Table:

Reading and Setting of Baud Rate

Click on "Read" and "Set" in the baud rate settings bar below to read and set the baud rate and address respectively. After the operation, you need to restart the device and modify the computer serial port settings.

Flash on/off function and settings

Introduction to the 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 [unit second]=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;

Flashing and disconnecting settings

Open the "Juying Soaring DAM Series Configuration Software" and click the dropdown arrow behind the relay mode to select the mode. (The later time can be set by yourself, actual time=fill in the number * 0.1 [unit: second])

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 PLC naming convention, 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.

Detailed explanation:

1. 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

2. Analysis of flashing open and closing 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

3. 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. After the relay board is powered, communication cannot be established using the 232 interface and cannot be controlled

Firstly, test whether different baud rates can be controlled. Pay attention to the A+, B-line, and shielded line of the 485 interface. Shielded line is not necessary, but it must be connected in cases of high communication error rate, even if the distance is very close.

2. 485 bus, with more than one device mounted, I sent relay 1 suction and sum at broadcast address 255, but not all modules have relay 1 suction and sum.

When there is only one device on the bus, the broadcast address can be used. If there are more than one device, please use a dip switch to distinguish the address for control. Otherwise, the module may not execute instructions correctly due to asynchronous judgment of communication data.

3. Siemens PLC and equipment cannot communicate normally

The definition of Siemens 485 bus AB is opposite to that of equipment