Switch Output Module 8-way Relay Isolated RS485 MODBUS RTU Communication | Бытовая техника

Switch Output Module 8-way Relay Isolated RS485 MODBUS RTU Communication | Бытовая техника

Purchase Notes:

1. If there are any technical problems before and after purchase, please consult directly if there are technical problems.

2. If you need the corresponding debugging software, agreement and instruction after purchase, you can contact the seller.

MODBUS Distributed Module Testing Software

Figure 1 MB8RO-relay output acquisition and control interface

Chapter I Product Introduction

I. Summary

MB8RO 8The output module of circuit relay can be controlled by MODBUS bus. The control interface is isolated RS485. Modbus-RTU communication is used to directly adapt to PLC, DCS and various domestic configuration software.

Relay output, power supply and RS485 communication electrical signals are isolated from each other, which can effectively suppress all kinds of serial and common mode interference, and also ensure the reliable operation of the module.

Two. Characteristic

1. Modbus-RTU protocol is adopted.

2. Relay output, power supply and RS485 communication electrical signals are isolated from each other.

3. RS485The output interface of communication signal adopts double protection of over voltage and over current.

4. Power polarity protection.

Three. Technical index

project

parameter

signal output

1Output Channel: 8 Frequently Open Relay Output

2Load capacity: resistance load 250V/10A inductive load 250V/3A

5. Relay coil and contact isolation voltage: 1500V

Communication output

1Communication protocol: MODBUS-RTU

2Interface type: isolated RS485 communication, output interface using over-voltage and over-current double protection

3Baud rate: 1200 bps, 2400 bps, 4800 bps, 9600 bps, 19200 BPS

38400bps57600bps, 115200bps.

4Check bits: no check, even check, odd check

5Settings: Module address, baud rate, check bits through software settings

6Communication Distance: @9600bps 1200m

7. Isolation voltage: 1500V

Module size

Individual module size: 115mm*90mm*40mm

Installation mode

Installation of Standard DIN Guideway

work environment

Temperature: - 10 ~ + 55 C Humidity: 35 ~85% (No dew)

Working power supply

1Power supply voltage: 10V~30V wide range power supply, with power supply polarity protection

2Power consumption: less than 3W

Four. Product appearance

Five. Peripheral wiring diagram

1. Relay Output Connection Method

2. Connection of communication and power supply

Six. Module Indicator and Switching Function Description

1. POW/SET; Module working status indication

A.Green light: The module is in operation. B. Red light: Module has configuration parameters written, need to re-power.

2. TXD/RXD: Communication status indication

A.Green light flashes: communication receives data B. Red light flashes: module is sending data

C.Green lights are always on: DATA + and DATA - connected communications RS485 wiring is reversed or disconnected.

3. Module right reset switch

1) When the communication parameters (module address, baud rate, check bit) are not known or the communication parameters are set incorrectly, the solution is to reset the communication parameters; we hold the reset switch with the clip and do not open it. Five seconds later, the module [POW/SET] red indicator lights up and the reset switch is opened. At this time, the communication parameters have been reset, as long as the power supply of the module is cut off. After restarting, the communication parameters of the module have been reset.

2) Communication parameters after reset: address: 1, baud rate: 9600 bps, check bit: No.

Seven. Schematic block diagram

Eight. MODBUSRegister description

1. MODBUS Function Codes Supported by Modules

Code

Meaning

operation

0x01H

Read multiple coil registers

Read the value of one or more coil registers

0x03H

Read multiple hold registers

Read the value of one or more holding registers

0x05H

Write a coil register

Write the value of a coil register

0x 06H

Write a single hold register

Write a data to the hold register

0x0FH

Write one or more coil registers

Write the value of one or more coil registers

0x 10H

Write multiple hold registers

Write one or more data to the hold register

2. Register Definition Description

1) Coil Register(0x01H,0x05H,0x0FH)

address

parameter

read/write

minimum value

Maximum value

Explain

00001

RO0

Read and write

0

1

Relay output0

00002

RO1

Read and write

0

1

Relay output1

00003

RO2

Read and write

0

1

Relay output2

00004

RO3

Read and write

0

1

Relay output3

00005

RO4

Read and write

0

1

Relay output4

00006

RO5

Read and write

0

1

Relay output5

00007

RO6

Read and write

0

1

Relay output6

00008

RO7

Read and write

0

1

Relay output7

2) Keep Register(0x03H,0x06H,0x10H)

address

parameter

read/write

minimum value

Maximum value

Explain

40065

Equipment type

read-only

0

256

2 (MB8ROModule)

40066

Device status

read-only

0

0x0101

Bit4Reset button status

Bit0Module Reset Request Flag

40067

Module voltage

read-only

0

300

0.0-29.9V

40069

product version

read-only

0

65535

Hardware version(high8position) + Software version(low8position)

40070

production information

read-only

0

65535

year(high8position) + Batch number(low8position)

40071

Module address

read/write

1

247

1(default)

40072

baud rate

read/write

0

7

0(1200) 1(2400) 2(4800) 3(9600) default4(19200) 5(38400) 6(57600) 7(115200)

40073

Parity bit

read/write

0

2

0(No check.) default 1(Parity check) 2(Odd parity check)