โมดูลแปลงสัญญาณ TTL เป็น RS485 TTL to RS485 module automatic flow TTL signal single-chip serial port

โมดูลแปลงสัญญาณ TTL เป็น RS485 TTL to RS485 module automatic flow TTL signal single-chip serial port

โมดูลแปลงสัญญาณ TTL เป็น RS485 TTL to RS485 module RS485 mutual conversion TTL signal single-chip serial port UART lightning protection hardware automatic flow control
The power supply of this product is wide voltage ( 3.0V-40V ), which makes the 3.3V system compatible with 5.0V system, and the 3.3V and 5.0V signals can be matched. This product has terminal block and silicone wire, direct wiring, all use original imported chip, strong performance, lightning protection design, strong anti-interference ability, industrial grade, 1 year warranty !
The pass-through module implements a TTL signal and RS485 signal 's conversion, but we must know, 485 is a half-duplex communication, this communication a two-way communication can be achieved, but not both simultaneously in both directions, must The rotation is alternated; that is, each segment of the communication channel can be either the transmitting end or the receiving end, but at the same time, the information can only have one transmission direction.
The automatic flow direction control of RS485 signal is realized , and the sending and receiving direction is automatically switched. Using this module is as simple as operating the serial port.
Baud rate: 110-256000bps
Module features:
This module fully considers the 485 bus lightning protection design and anti-interference design, extremely high EMC (electromagnetic compatibility), EMI ( electromagnetic anti-interference) performance, when the long-distance transmission in the field, the module's "ground" end Access to the earth, can play a good anti-interference and lightning protection, make the 485 bus more secure; indoor short-distance transmission can not access the earth.
With standard 2.54 pitch pin header for your secondary development
With 120 ohm matching resistor, shorting R0 can enable matching resistor, and short circuit is recommended for long distance transmission.
Support multi-machine communication, at least 40 nodes can be connected to the same network
It can be hot swapped, and there is no signal embedding.
Anti-interference type wiring and copper plating to prevent signal interference
Module highlights
Wide voltage supply (3.0V-30 V ) , limit voltage 33V , it is recommended to use within 30V , the minimum voltage is higher than 2.8V .
Compatible with 3.3V and 5.0V signals , can match the module
there is a very high EMC and EMI performance.
It adopts original imported chip, industrial grade design, strong anti-interference ability, and adopts powerful 485 lightning protection design. It can be used in industrial and field harsh environments, working temperature is -40 ° C to +85 ° C, transmission Up to a kilometer (tested with 850 meters of 2*1.5 cable, it is recommended to use within 800 meters, more than 800 meters, please add repeater)
With terminal block and silicone wire, it is very convenient to use.
With RXD, TXD signal indicator, the receiving and receiving conditions are in full view


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