SPECIFICATIONS

Application: Computer

Brand Name: EC Buying

Choice: yes

Condition: New

Dissipation Power: low

High-concerned chemical: none

Operating Temperature: normal

Origin: Mainland China

Package: module

Supply Voltage: -

Type: Relay

is_customized: Yes

Modbus 1-channel relay module

Input/output wiring and functional description;

Output section: NC (normally closed), COM (common pin), NO (normally open), load 220V10A, recommended below 220V 6A.

1. It's just the closing and opening of a switch, without any voltage output.

2. The opening and closing of the relay can only be controlled by sending instructions through 485 communication.

3. By default, NCCOM is connected. When 485 initiates the start command, NC and COM are disconnected, and NO and COM are connected

Input section: IN1 connected to switch or voltage signal (3V-30V)

1. The status of the switch can only be read through a computer and cannot control the relay

2. Connect IN1 to switch (no voltage signal): Connect IN1 to VCC computer and set it to 1, otherwise it will be 0

Hardware resources

RS485 communication interface

TTL communication interface

1-channel input

1 output

A user LED indicator light

master chip

1 relay status indicator LED light

Power terminal interface (5V/12V24V)

Modbus 2-channel relay module

Hardware resources;

RS485 communication interface

TTL communication interface

2-channel optocoupler isolated input

2-channel optocoupler isolated output

A user LED indicator light

master chip

2 relay status indicator LED lights

Power terminal interface (5V/12V24V)

Modbus 4-channel relay module

Relay communication: Multi unit network 485 communication, based on MBDBUS-RTU protocol, default communication address is 1, and users can modify the address themselves through instructions.

Note: IN1-IN4 are used to read the switch status through 485 when connected to a switch, not through input control relay output.

The IN1-N4 switch status needs to be checked and read by the computer every time, and data cannot be actively sent to 485.

Attention: Connect IN1-14 to a switch or voltage signal (0~5V)

Wiring method;

IN1-GND (default is high level, low level after the switch is turned on) The computer sends instructions to read the switch status.

IN2-GND (default is high level, low level after the switch is turned on) The computer sends instructions to read the switch status.

INB-GND (default is high level, low level after the switch is turned on) The computer sends instructions to read the switch status.

IN4-GND (default is high level, low level after the switch is turned on) The computer sends instructions to read the switch status.

Hardware resources;

4 relay outputs (one normally open, one normally closed)

master chip

4-channel optocoupler isolation relay output

4 relays closed LED indicator lights

Circular DC interface, connected to terminal DC interface. Convenient power wiring (5V/12V/24V)

4-channel input interface (dry node input, passive input, connected to GND)

One RS485 communication interface.

A power indicator light

A user's LED light

RESET

Signal access terminal voltage: 3V-30V

High voltage control terminal voltage: 220

Modbus 8-way relay module

Hardware resources;

RS485 communication interface

TTL communication interface

8-way optocoupler isolated input

8-way optocoupler isolated output

A reset button

A user button

A user LED indicator light

A power indicator light

master chip

8 relay status indicator LED lights

DC power socket (5V/12V/24V)

Power terminal interface (5V/12V/24V)