Resource

Datasheet

• SP3485E
• SP3232E

Overview

RS232 TO RS485/422, an industrial grade RS232 to RS485/422 isolated converter, boasts industrial grade rail-mount case design and protection circuits such as the built-in power isolation, ADI magnetical isolation, and TVS diode. It is easy to operate RS232 TO RS485/422 as it features zero-delay automatic transmission conversion, faster communication speed, stability, reliability, and safety, which is applicable for scenarios with high communication requirements.

Features

• Onboard SP3232EEN and SP485EEN chips. Fast communication, stable and reliable, better compatibility.
• Stable transmission at the rate of 300~921600bps.
• 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, lightning-proof & anti-electrostatic.
• Onboard self-recovery fuse and protection diodes, ensure the current/voltage stable outputs, provide over-current/over-voltage proof, and improve shockproof performance.
• Onboard 15KV ESD isolation protection and 600W lightning proof & anti-surge protection.
• Onboard 120R terminal resistor on the RS485/RS422 interface, disabled by default, configurable by jumper.
• Onboard power supply screw terminal, allows 5V~36V DC wide-range input.
• 3 LEDs for indicating the power and transceiver status.
• Industrial rail-mount ABS case design, small in size, easy to install, and cost-effective.

Version Selection

Parameters

Onboard Interface

Dimensions

Function Test

Here we take USB TO 4CH Serial Converter as the example:

RS232 TO RS485 Test

Hardware Connection

RS232 TO RS485/422	USB TO 4CH Serial Converter
RS485 - A+	Port C - TA
RS485 - B-	Port C - TB
RS485 - GND	Port C - GND
RS232 - RXD	Port D - TXD
RS232 - TXD	Port D - RXD
RS232 - GND	Port D - GND

Software Operation

• Enable two SSCOM.

• Select the COM port corresponding to Port C and Port D of the USB TO 4CH Serial Converter respectively.

• Input the characters to be sent, select "Show Time and Packet" to view it more intuitively, and then click on "Open COM".

• Both select the 100ms of the SSCOM, and you can see the effect.

RS232 TO RS422 Test

Hardware Connection

Software Operation

• Enable two SSCOM.

• Select the COM port corresponding to Port C and Port D of the USB TO 4CH Serial Converter respectively.

• Input the characters to be sent, select "Show Time and Packet" to view it more intuitively, and then click on "Open COM".

• Both select the 100ms of the SSCOM, and you can see the effect.

Resource

Datasheet

• SP3485E
• SP3232E

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