Brand Name:icchipcn.com
Condition:New
Type:Voltage Regulator
Model Number:MW
Application:Computer
Supply Voltage:1
Dissipation Power:1
is_customized:Yes
Modbus-Rtu 1/2/ Channel 12V Relay Module Switch Modbus RTU 4 Channel Relay Output 12V Switch Input 485 Communication TTL Pin He
1, VCC, GND: dc7-24v power input;
2, IN, GND: dc3.3-30v optocoupler signal input;
3, A+, B- : RS485 communication interface, A+, B- connect to external control terminal A+, B-;
4. Relay switch signal output:
NC: normally closed end, short connection with COM before the relay closes, and suspension after the relay closes;
COM: common terminal;
NO: normal start, suspended before relay suction, short connection with COM after suction.
5. Relay indicator light: it is lit when the relay is closed;
GND, RXD, TXD: TTL level UART communication interface, GND, RXD, TXD are connected to GND, TXD, RXD of external control terminal respectively;
3. Introduction to Modbus RTU command
Modbus devices perform related operations by receiving Modbus RTU instructions from external control terminals (such as upper computer /MCU). A frame instruction is generally composed of device address, function code, register address, register data and check code, and the frame length is related to the function code. Generally, the first byte of each frame data is the device address, and the range can be set to 1-255, with the default of 255 (i.e. 0xFF), and the last 2 bytes are CRC checksum codes.
Assuming the device address is 255, the common Modbus RTU instructions are as follows:
Q1: What Is Your Product Warranty?
A: We Guarantee Our Product Is Fit For Its Normal User Purposes And Is Free From Defects In Materials Or Workmanship.
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A: Our Company Keep Items Quality For A Long Time. If There Are Any Defective Goods Due To
Production Defects Or Transportation Problem, Please Contact Us. Our Customer Service Team Will Provide Immediate Response To
Complaints. We Will Try Our Best To Give You A Good Resolve Way.
Q3: What Is Your MOQ (minimum Order Quantity)?
A: Generally Our Moq Is No Limited. Please Have More Discussion With Us If Your Combination Of Models Is Complicated.
Q4:how About Getting Samples From You?
A: We Will Send You The Samples After We Receive The Payment For Samples. The Buyer Shall Afford The Shipping Cost. Please Have A
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Q5:about The Shipment: What Type Of Shipment Will You Use?
A: We Usually Ship The Products By Express(delivery It To Your Door) Or By Air Freight To Your Nearest Airport, Shipping Days:3-7
Working Days Depend On Destination;if The Order Quantity Is Large, We May Ship By Sea Container And The Best Ship Way Is By Sea,
Shipping Days: Over 20 Working Days Depend On Destination Port.
Q6:what Packing Do You Use?
A: Neutral Package With Airbag Or Customized Package.
Q7:how Much Are The Shipping Cost?
A:shipping Cost Is Charged By The Package's Weight And Related To The Shipping Methods You Choose And Your Destination.
Q8:how To Order?
Step1.Click (Add to Cart) Buy Directly On The Product Page, Or Add To Shopping Cart And Settle Together, Pay With Paypal,
Need your information, such as full name,country, city, detail address, post code, tax number ...
Step2. We Will Delivery by EMS POST, FedEx or DHL Within
3-5 Working Days After Payment Confirmed.
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