RC33: RS-232/RS-485/RS-422 To Ethernet Converter

- Control Serial Device over Ethernet

- 10/100 Mbps Ethernet Interface

- Distance Serial Connections

            RS-232/RS-485/RS-422 to Ethernet Converter RC33 is device for convert serial communication (RS232/RS485) to Ethernet without changing any software. RC33 is compatible with any software since it does not change protocol instead it using Ethernet Network to transfer data so there is no need to wiring a cable.

            There are three working mode of RC33
            - Direct IP Mode ตัว RC33 RC33 acting as TCP or UDP Server so other equipment the Lan Network can be connect to RC33 using remote IP address
            - Virtual COM Mode simulate COM Port using software to connect to RC33
            - Paired Mode Connecting 2 device which have serial port via Lan Network Simple as picture below

Connecting example


Connecting PLC via Internet network


Connecting Computer and PLC via Internet Network

ตัวอย่าง "การตั้งค่าการใช้งาน"


Ethernet Interface


10/100 Mbps, Full-duplex or half-duplex, Auto MDI/MDIX


RJ45 (10 Base-T) Ethernet


Accord 10 Base-T/100 Base-T standard

Data Rates:

300 - 115,200 bps


100 m.

Magnetic Isolation Protection:

15 KV Built-in

Serial Interface

Serial Standards:

RS-232 through D-Type 9 pin connecter

RS485/422 (Isolated) 4 Pin Terminal Block


RS485/422 Max 32 Unit


RS232 Length 15 m.

RS485/422 Length 1 Km.

Serial Parameter

Baud Rate:

4800, 9600, 19200, 38400, 57600, 115200

Data Bits:

7, 8

Stop Bits:

1, 2


None, Even, Odd

Flow Control:

None, XonXoff, Hardware

Power Requirements

Power Supply:

110 VAC, 220 VAC

24 VDC (Optional)

Environmental Limits

Operating Temperature:

0 to 55 °C

Operating Humidity:

5 to 95 %RH

Storage Temperature:

0 to 70 °C

Physical Characteristics


w122 x H30 x D120 mm.


Warranty Period:

5 Year

Ordering Information: Power Supply
Example RC33/220VAC

Package Checklist

1. RC33

2. LAN Cable

3. USB Cable

4. Manual

5. CD Software