Product Specification Book

Modify the record table:

one, Product Introduction

WLS-03It's a pass RS485 The communication method can obtain the current leakage state of the water immersion controller in real time.Includes a circuit that does not position the leakage rope state, RS485 Output circuit and two-channel relay output circuit, a knob that can adjust detection sensitivity;Including two LED  Status indicator and a sound silence button.

two, Scope of application

It is suitable for occasions where leakage needs to be detected, such as: communication base stations, postal and telecommunications, financial systems and libraries, museums, archives, airports, oil depots, warehouses, and petroleum, petrochemical, pharmaceutical industries.

three, Features

1. Wide range of voltage power supply;

2. Supports knob adjustment sensitivity;

3. With working status and water leakage status indicators;

4. support 1 Road leakage induction rope access, maximum support 200 rice;

5. support RS485Output, ModBus RTU protocol, 2Road relay output.

Four, Technical parameters

five, Interface definition

six, Communication protocol

Basic communication parameters:

1、Agreement Overview

The communication protocol describes the input and output commands, information and data of the product in detail for third parties to use and develop.

Physical interface:

1) Connect to the main communication port of the upper computer, using standard serial RS485 Communication port;

2) The information transmission method is asynchronous and start bit 1Bit, data bit 8 bits, stop bit 1 bit, no verification;

2、Detailed description of communication protocol

2.1Communication method

1） Support broadcast mode;

2） No communication can be started from a slave station anyway;

3） If the master or any slave receives a package containing an unknown command, the package will be ignored and the receiving station will not respond;

4） All loop communications should comply with the main /From the way.In this way, information and data are passed between a single master and slave (monitoring device);

2．2 Return the data frame structure description

Each data frame is composed as follows: ( RTU model ）

3、Transfer format

1) The host sends a read address command:

Slave return address:

Example: Send: 00 03 00 00 00 01 85 DB；

response: 00 03 02 00 addr CRCL CRCH；like addr=02，Read product Address is 02。

2) Revise Address Command

This command can Revise Slave address, Address value The range is 1By 247 ，After that, the slave address is the address set by the host 。

Host send Revise Address command:

Return to the slave:

Example:

Host send: 00 06 00 00 00 address CRCL CRCH；

Slave answer: 00 06 02 00 address CRCL CRCH；

like addressfor 02，The slave address Just be Set as 2。

After the host receives the slave response, it believes that the forced address is set successfully, and the first byte is as follows address Set the address and send the read data command.

3) Host sends read Get leaked status Order:

Slave sensor return value:

Example:

Host send ：01 03 00 01 00 01 CRCL CRCH；

product response: 01 03 02 00 01 CRCL CRCH；

return Leaked Status ：00 01，Corresponding to decimal 01，Indicates that the current leaked alarm status is; 01Indicates that it is in a leaked alarm state. 00It means normal.

4)After the product is powered, the operation indicator (green light) will always be on;When the product is detected to be in a leak, the product will be uploaded automatically. Leaked Status Order ，Command format and “The answer command format of the key point 3)” is the same, and the buzzer will emit a sound alarm and the alarm indicator light (red light) will always be on. At this time, press the button (long press the button) to eliminate the sound alarm of the buzzer.The alarm indicator (red light) will not turn off until the product detects that it is not in a leaked state and the buzzer will stop sounding alarms.

seven, Things to note

1. This product is not suitable for use under regular condensation and chemical pollution;

2. Please use and install strictly in accordance with the instructions, and do not modify or tear product labels privately;

3. Product factory 12Within months, free repair services will be provided to the product based on normal use and non-human damage.

eight, Frequently Asked Questions and Solutions

Possible reasons for no output or output error:

1. Equipment is damaged;

2. Baud rate error;

3. USB The 485 driver is not installed or damaged;

4. 485The bus is disconnected, or A、B The wire is reversed;

5. The computer has other devices connected to it, and the port selected by the communication software is incorrect;

6. Too many equipment or too long wiring, power should be supplied nearby, add 485 enhancers, and add 120 ΩTerminal resistor.

Nine, Warnings and personal injury

Do not use this product on safety protection devices or emergency stop devices, and in any application that may cause personal injury due to failure of the product;Please read the contents in this manual carefully before using this product.