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RS232 to RS422/RS485 Converter, 3kV Isolation, DIN Rail/Wall Mnt US$137.00

RS232 to RS422/RS485 Converter, 3kV Isolation, DIN Rail/Wall Mnt

The CS-428i is a RS232 to RS422/RS485 converter with 3kV Opto-Isolation is designed for rugged industrial applications. It supports communication speeds of up to 921.6kbps on both the RS232 and RS422/RS485 sides. This RS232 to RS422/RS485 converter is available in two different models:

  • The CS-428i-DC is DC powered via an external DC power supply. A DC power supply is not included.
  • The CS-428i-AC is AC powered via an integrated universal switching power supply.
You can select your preferred model from the option drop down selection menu below.

RS232 to RS422/RS485 Converter Highlights

  • 3kV Opto-Isolation and 15kV Surge Protector
  • Communication speed of up to 921.6kbps
  • AC or DC power supply models available
  • DIP Switches for easy configuration
  • RTS Auto Toggling by hardware
  • DIN Rail Adapter and a Wall Mount for easy installation included
  • DTE/DCE mode for RS232
  • Max. 32 Device Connectivity for RS422/RS485 Mode

RS232 to RS422/RS485 Converter Opto-Isolation

The CS-428i uses opt-couplers rated at 3kV to isolate all RS232 signals from the RS422/RS485 side. The unit's power supply for the RS232 and RS422/RS485 transceivers is isolated via a DC-DC coupler.

Auto RTS Control (Auto Toggling)

In a 1:N communication environment it is undesirable that multiple devices send data at the same time as it causes data collisions that lead to data errors. To prevent this only one device can send data at any given time, which means that data I/O control is necessary. The CS-428/9AT-ISO performs automatic toggling of the RTS line by hardware, eliminating the need to implement data flow control in software.

RS485 Echo Mode

The CS-428/9AT-ISO can be configured for Echo or non-Echo mode via an internal jumper. In RS485 Echo Mode the output signal (TX) is routed back to the Input (RX). This mode can, for example, be used to diagnose RS485 bus data collisions. The CS-428/9AT-ISO implements echo mode in hardware.

Mode Asynchronous serial communication
Speed Up to 921.6Kbps
Distance Max. 1.2Km @115.2Kbps,24AWG twisted pair cable
Connector RS232: DB9 Female
RS422/485: Terminal Block 5P
Signals TXD, RXD, RTS, CTS, GND for RS232
Protection 15kV Surge Protection for all signals
3kV Opto-Isolation
Data Bits 5, 6, 7, 8
Stop Bits 1, 1.5, 2
Parity None, Even, Odd, Space, Mark
RS422 mode Point-to-Point, Multi-Drop
RS485 mode Echo, Non-Echo
RTS Control Auto Toggling or manual
12 DIP Switches allow you to configure: RS422/485 mode selection
RS232 DTE/DCE mode selection
RTS control (Auto Toggling)
Number of Data Bits
Echo Mode Enable/Disable
Communication Speed Selection
Enable/Disable Bus Termination Resistors
OS No Software Required
Power Input CS-428i-AC: 85~235VAC, 50~60Hz
CS-428i-DC: 10~30VDC
Power Consumption 1.2W max.
LED Power, TX, RX
Dimensions 116(W)x75(D)x29.5(H)mm
Weight CS-428i(AC): 306g
CS-428i(DC): 282g
Enclosure Metal
Operating Temp 0 ~ 55C (32~131 F)
Storage Temp -20~70 C (-4~158 F)
Humidity 5 ~ 95% Non-Condensing

RS232 to RS422/RS485 Converter Downloads

Order Options & Package Contents

CS-428i-DC DC Powered CS-428i converter (10~30VDC) with DB9 Female Connector
Package Contents CS-428i-AC,DB9 male-to-male gender adapter, Wall Mount Guide, DIN Rail Adapter, Terminal Block Connectors, Manual

CS-428i-AC AC Powered CS-428i converter (85~235VAC, 50~60Hz) with DB9 Female Connector
Package Contents CS-428i-AC,DB9 male-to-male gender adapter, AC power cord, Wall Mount Guide, DIN Rail Adapter, Terminal Block Connectors, Manual

Available Options:

This product was added to our catalog on Thursday 17 March, 2011.


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