Instruction Manual
DE: Bedienungsanleitung - de.startech.com
FR: Guide de l'utilisateur - fr.startech.com
ES: Guía del usuario - es.startech.com
IT: Guida per l'uso - it.startech.com
NL: Gebruiksaanwijzing - nl.startech.com
PT: Guia do usuário - pt.startech.com
Manual Revision: 08/09/2018
For the most up-to-date information, please visit: www.startech.com
Packaging Contents
• 1 x RS-232 to RS-422/485 Converter
• 1 x Universal Power Adapter (NA/EU/UK)
• 1 x Instruction Manual
Product Overview
IC232485S
Industrial RS232 to RS-422/485 Serial Converter with 15KV ESD Protection
*actual product may vary from photos
RS-422/485 Connector
RS-232 Connector
Status LED
DC Jack
DIP Switch
Wall Mount Bracket
LED Indicators
PWR (Green)
Lit when power is supplied to the device
Rx (Yellow)
Flashes when serial data is being received
Tx (Yellow)
Flashes when serial data is being sent
DIP Switch Settings
Setting
Position
Auto RS-422/485
(Default)
Automatically detect the protocol (RS-422/485)
and duplex (full/half)
1: On, 2:Off
RS-422 (4-Wire RS-485)
Force the device to RS-422 full duplex mode
1:Off, 2:On
Note:
If both of the Dip Switches are set in the On or Off position
then the Converter will not function.
RS-232 Pinout
Pin 1
DCD
Pin 2
RXD
Pin 3
TXD
Pin 4
DTR
Pin 5
GND
Pin 6
DSR
Pin 7
RTS
Pin 8
CTS
Pin 9
RI
Pin
RS-422
4-Wire RS-485
2-Wire RS-485
1
Tx-
Tx-
D-
2
Tx+
Tx+
D+
3
Rx+
Rx+
4
Rx-
Rx-
5
GND
GND
GND
6
RTS-
RTS-
7
RTS+
RTS+
8
CTS+
CTS+
9
CTS-
CTS-
RS-422/485 Pinout
1
5
6
9
1
5
6
9
