RS232 rotor RS485 module serial port conversion module 232 485 mutual transfer module industrial -level protection

Introduction

This module can facilitate the transition of 232 signals and 485 signals, comes with industrial -level protection, has been shipped in batches, and the performance is stable and reliable;

Power supply plan:

Type A: voltage range: 475-5.25V;

Type B: voltage range: 7.5-26V;

2. Features

1. All chips We guarantee that it is a new original imported industrial -grade chip, which is transmitted by ultra -long -distance.

2. There are three LED indicators: RXD, TXD, and power supply, and the serial input protection; 3. The chip has a limited swing driver to minimize EMI and reduce signal reflection caused by inappropriate terminal matching cables, so as to thus reflects, therebyMake the transmission rate of no error signal up to 500kbps.

4. Input impedance with 1/4 unit load, support multi -machine communication, and allows the bus connected to up to 128 devices.

5. The working temperature of industrial-grade chips can reach -40c to+85C

6. This module can be plugged out, and there will be no other 485 chip hot insertion signal bolt.

7. Have 120Q terminal connection resistance (when the line length exceeds 200 meters, it is more stable, reducing the code rate);

8. Use transient inhibitory TVS 600W diode, over -pressure protection performance is better: 9. Use 10Q current protection resistance, patch design improves 485 signal integrity; 10, RS485, TTL signals all single -sided wiring to ensure the quality of signal, the quality of the signal, andImprove signal integrity;

11. Paper copper in large areas to prevent signal interference;

12. Support multiple Potter rate: 300/600/1200/2400/4800/9600/19200/38400/57600/115200/230400/460800/921600, etc.:

Wiring description

End of 232:

The collection and hair of R and T: RS232 bus need to be connected with other RS232 modules, that is, RX is connected to TX.

G is a ground at 232, connecting the external negative electrode;

V: The power supply positive electrode of the module is connected to the external power supply positive pole;

At the end of 485:

A and B: The data+(a) and data- (b) of the RS485 bus, 485 need to connect A, b to connect b;

G: RS485 reference place, generally not to be connected;

Third, size diagram

Thickness: 11.3mm (terminal part)

Thickness: 3.75mm (the highest part of the component)