Product Features

Supply voltage DC7-40V;

Relay output contact isolation;

The communication interface supports wireless WIFI network;

Communication baud rate: 2400480096001920038400;

Communication protocol: Supports standard Modbus RTU/TCP protocol;

Support users for secondary development.

PRODUCT FUNCTION

Four way relay control;

Four channel switch input;

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;

Support local non lock linkage mode；

Support local self-locking linkage mode.

Product Selection

Parameters

Communication Architecture Description

The device uses a wide area network based on the Internet for remote communication, and communicates with our cloud server ems.jydtu.com through configuration parameters, with port number 60001.

Interface Description

Size

Shell size

Bare board size

pinouts

Relay wiring instructions

Schematic diagram of active switch wiring

Schematic diagram of passive switch wiring

Equipment parameter configuration

The single WIFI version device is configured with parameters through a web page. The default WIFI signal name of the device is JY_ * * *, the connection password is 12345678, and the default IP is 192.168.10.1

Working mode description

Non lock linkage mode of this machine

The board module itself has optocoupler input and relay output. In this mode, the input optocoupler and relay are directly linked. Namely: the optocoupler input signal takes effect ->the corresponding relay is engaged, the optocoupler input signal is cancelled ->the corresponding relay is disconnected.

In this mode, due to mechanical and program delays, there will be a certain delay from the optocoupler input signal to the relay action, but the maximum delay will not exceed 0.05 seconds.

Due to the fact that all relays are directly linked by optocouplers in this mode, there may be a phenomenon where the serial port cannot operate the relay. This is not an abnormal phenomenon, but rather a situation where the relay is linked by the optocoupler before it is activated after being operated through the serial port.

Local self-locking linkage mode

The module itself is a board module with optocoupler input and relay output. In this mode, every time the optocoupler inputs a signal, the corresponding relay flips once. Namely:

The optocoupler input signal takes effect ->the relay flips (switch from engagement to disconnection, switch from disconnection to engagement);

The optocoupler input signal is cancelled ->the relay does not operate;

This mode also has the delay issue of non lock mode, but the delay time will not exceed 0.05 seconds.

This mode can mainly be used in situations where external signals are triggered to control the start and stop of equipment, such as when an optocoupler is connected to a button and the corresponding relay is connected to an electrical device. Each time the button is pressed, the device will switch between start and stop states.

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 =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;

Instruction Explanation

Detailed 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

1. Relay inquiry
Query 4-channel relays
FE 01 00 00 00 04 29 C6

Relay card return information:

FE 01 01 00 61 9C

2. Query optocoupler

Send command code: FE 02 00 00 04 6D C6

Optocoupler return information:

FE 02 01 00 91 9C

3. 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

4. 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