Data Sheet

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C20 C21 C22 C23 C24 C25

Features Ethernet converter to RS232/RS485 ESD protection for the RS485 data line Power supply: +12 to +30 VDC Transmission speed up to 115200 bps Tx, Rx and power LED indicators RS485 embedded termination 120 ohm Operating temperatures: -40°C to +75°C DIN rail mounting Dimensions: 90x56.4x22.5 mm 3 years warranty Customization of OEM is welcomed

Introduction

C20 - C22 are a products family of reliable converters based on the ESP32 Xtensa LX6 microcontroller, extending the capabilities of industrial devices.
C23 - C25 are a products family of reliable converters based on the STM32F4 microcontroller, extending the capabilities of industrial devices.

The addition of a network interface allows remote access and full control over communication via a computer.

The user performs the basic configuration of transmission parameters in a browser or via a Telnet/serial console. 

Dedicated EMC integrated circuits guarantee improved connection quality by limiting the impact of the interferences typical for an industrial environment.

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Variants

C20 - Serial Port Server (2x RS232)

C21 - Serial Port Server (1x RS485)

C22 - Serial Port Server (2x RS232/RS485)

* In the C22 converter user should use only RS232 or only RS485 interface of one port as they occupy the same internal bus of the device. It means, you can't use ports: RS232-1 & RS485-1 at the same time and RS232-2 & RS485-2 at the same time!

C23 - Serial Port Server (4x RS232)

C24 - Serial Port Server (4x RS485)

C25 - Serial Port Server (2x RS232 & 2x RS485)

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LED indicators

Converters C20 - C22			Converters C23 - C25
LED indicator	Color	Function	LED indicator	Color	Function
PW	Blue	Power	PW	Blue	Power
ETH	Green	Network activity	ETH	Green	Network activity
ST	Orange	Console mode	CN	Yellow	Console mode
	Red	Service mode	COM	Green	RS232/RS485 activity
			SR	Red	Service mode
			ER	Yellow	Error

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Getting started

Power supply

Serial Port Servers C20 - C25 have wide voltage power input (12-30 VDC) and the power consumption is less than 1W.

Reset to factory defaults

Reset to factory defaults is possible on the web page in the device section or using the service mode. 

Service mode

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SR-D