Overview

TTL TO RS232 (B) is an industrial-grade rail-mounted electrically isolated TTL-to-RS232 serial converter.

Feature

• Compatible with TTL/RS232 standard, converting the TTL signal into a balanced differential RS232 signal, supporting full-duplex communication.
• Compatible with 3.3V ~ 5V TTL signal level, with anti-reverse connection and anti-over-voltage circuit on the power supply side.
• Onboard unibody power supply isolation, provides stable isolated voltage and needs no extra power supply for the isolated terminal.
• Onboard unibody digital isolation, allows signal isolation, high reliability, strong anti-interference, and low power consumption.
• Onboard TVS (Transient Voltage Suppressor), effectively suppresses surge voltage and transient spike voltage in the circuit, and with lightning-proof and ESD protection.
• Onboard protection diodes, ensure the current/voltage stable outputs, provide over-current/over-voltage protection, and improve shock resistance.
• Onboard power supply screw terminal for 3.3V~5V DC input.
• Industrial rail-mount ABS case design, small in size, easy to install, and cost-effective.

Parameters

Primary Function

Convert the TTL signal into RS232 signal, which can be used for interface conversion and can also be used to extend the communication distance.

Interface Introduction

Communication Connection Diagram

TTL convert to RS232, point-to-point, full-duplex communication, suitable for interface conversion

Two groups TTL To RS232 conversion, point-to-point, full-duplex communication, suitable for extending the communication distance of TTL

Dimensions

Hardware Test

Test Note

Test Environment: PC (Windows).
Accessories required for testing:

• TTL TO RS232 (B) —— This product
• USB TO TTL - not included
• PC (if your PC does not feature the RS232 interface, you can choose USB to RS232 (female socket male pin) for adapter test)

Test Hardware Connection

Connect the RS232 interface of TTL TO RS232 (B) to the PC through the serial port cable or the USB to RS232 cable, connect the TTL interface of TTL TO RS232 (B) to the TTL interface of USB TO TTL, and then connect the USB port of USB TO TTL to the same PC for the self-transmission test. The schematic diagram of the hardware connection is as follows:

Software Operation

• Open two SSCOM interfaces.
• Select two corresponding COM ports.
• Select the baud rate as 115200, input the characters to be sent, select "Show Time and Packet" to view it more intuitively, and then click on "Open COM".

• In these two SSCOM interfaces, select Send Every 100ms, and you can see the effect.

Resource

• Sscom

FAQ

Support