Single Chip Microcomputer TTL to RS485 Module 485 to Serial Port UART Level Interconversion

(Description in Chinese and English for Details)

Description in Chinese:

RS485 Automatic Flow Control Module Compatible with 3.3V and 5.0V Power Supply and Signal

You Do Not Need the "Receive-Send" Control. Using This Module Is as Simple as Operating a Serial Port.

This Passthrough Module Realizes the Interconversion between TTL Signal and RS485 Signal, but You Must Know That 485 Is Half Duplex Communication, ThisCommunication ModeTwo-Way Communication Can Be Realized, but It Cannot Be Carried out Simultaneously in Both Directions, and It Must Be Carried out Alternately; That Is to Say, Each End of the Communication Channel Can Be a Sender Or a Receiver, however, at the Same Time, Information Can Only Be Transmitted in One One Directions.

Port Rate: 110 ~ 256000bps Perfect Support

Module Highlights:

(1)3.3V Is Perfectly Compatible with 5.0V Power Supply

(2)3.3V Is Perfectly Compatible with 5.0V Signals

(3) Absolutely Adopt Original Imported Chips, Industrial-Grade Design, Strong Anti-Interference Ability, and Adopt More Effective 485 Lightning Protection Design, Which Can Be Used in Harsh Environment of Industrial Site and Field, the Working Temperature Is-40 ℃ to 85 ℃, and the Transmission Distance Can Reach Kilometers (It Is Recommended to Use the 850-Meter 2*1.5 Cable for Testing Within 800 Meters, more than 800 Meters, Please Add Repeater)

(4) It Adopts Semi-Hole Process Design, with a Thickness of 0.8mm, Which Can Be Easily Used as Sub-Mother Plate Or Welded Terminal

(5) with Rxd and TXD Signal Indicator Lights, You Can Have a Panoramic View of the Sending and Receiving Conditions.

Module Features:

(1) This Module Fully Considers the 485 Bus Lightning Protection Design and Anti-Interference Design, and Connects the "Earth Connection" End of the Module to the Earth during Long-Distance Transmission in the Field, it Can Play a Very Good Role of Anti-Interference and Lightning Protection, Making 485 Bus Safer; It Can Not Be Connected to the Earth during Indoor Short-Distance Transmission.

(2) Adopt Standard 2.54-Pitch Design to Facilitate Your Secondary Development

(3) It Has 120 Ohm Matching Resistor, Which Can Be Matched by Shorting R0. It Is Recommended to Shorting When Long-Distance Transmission.

(4) Supports Multi-Machine Communication and Is Allowed to Connect to the Bus of up to 128 One Devices.

(5) This Module Can Be Hot-Swapped without Signal Blocking Caused by Hot-Swapping of Other 485 Chips.

(6) Copper Is Laid over a Large Area to Prevent Signal Interference

Description in English:

TTL to RS485 module 

Module highlights:

(1) 3.3V and 5.0V power perfect compatibility

(2) 3.3V and 5.0V signal perfect compatibility

(3) the absolute adopts imported chip, industrial design, strong anti-interference ability, at the same time, adopt more effective lightning protection design, 485 can be used in industrial field and field under the harsh environment, the working temperature of 40  to 85 , the transmission distance of km (with 850 m 2 * 1.5 cable testing, suggest use within 800 meters, more than 800 meters please add repeater)

(4) the half hole process design, plate thickness 0.8mm, can be easily as composite plate, can also be used for welding terminal

(5) has the RXD, TXD signal indicator lights, send and receive status panoramic view

The module features:

(1)This module fully considered485BusLightning protection designAnti interference Design When the long-distance transmission in the field, the "Earth" of the module is connected to the earth, which can play a very good role in anti interference and lightning protection.485Bus is more secure; indoor short distance transmission can not access the earth.

(2) with a standard2.54Spacing design to facilitate your two development

(3)Have 120Ou matching resistance, short connectR0Can match the resistance, long distance transmission is recommended.

(4)Support multi machine communication, allowing access to the most 128A device on the bus

(5)This module can be hot plug, no other 485Chip hot swap signal plug phenomenon

(6)Large area laying copper, preventing signal interference

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