SPECIFICATIONS

Brand Name: QSZNTEC

Choice: yes

Condition: New

High-concerned chemical: none

Origin: Mainland China

Type: Module

Introduction

RS232 to 485 module can realize the mutual conversion between RS232 and 485 communication systems; The module is equipped with automatic flow control function to realize automatic conversion of RS485 transceiver. The integrity and EMC characteristics of the signal are specially considered in the module design, and multiple protection measures are added, so it can be used in various industrial applications. The module is simple in design, beautiful in appearance, stable and reliable.

Specification

1、 Features:

1. The module adopts 3.3V or 5V power supply, which is suitable for more applications.

2. Industrial grade design, stable and reliable performance, signal transmission rate up to 120Kbps;

3. Multiple protection measures: positive and negative 15KV ESD protection, 600W two-way TVS protection;

4. Support multi machine communication, and 128 devices can be attached to the 485 bus at most;

5. The module supports hot plug, with strong driving ability, and the maximum transmission distance of 485 bus is 1200 meters;

6. It has a blue VCC indicator and a green RXD, TXD transceiver indicator;

7. Four 3mm mounting screw holes shall be reserved and pluggable terminals shall be used for convenient use.
2、 Electrical parameters:

Working voltage: 3.3V or 5.0V (should not exceed+/- 5% of the nominal voltage)

Working current: 5mA

Operating temperature: - 30 ° C~70 ° C

Communication rate: 300-120000 (120K) bps, transparent transmission

Module size: PCB size 28 * 50 * 10mm (L * W * H); With terminal ruler

Inches 28 * 65 * 13mm (L * W * H)

Screw hole size: center distance of screw hole 22 * 42mm
3、 Interface description:

V+and V -: positive and negative poles of power input interface.

RX and TX: RX and TX of RS232 bus shall be connected with other RS232 modules

Fork, that is, RX is connected to TX.

A and B: DATA+(A) and DATA - (B) of RS485 bus.

GND: RS485 reference ground, the same as V -, - can be disconnected.