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Data Sheet

RemoteCOM is a complete hardware and software solution for creating remote communication ports. The software part can be uploaded to any of the Redisage C20 - C25 Ethernet Converters. It provides a communication between a LAN host and a device equipped with RS232/RS485 serial interfaces. A dedicated app makes it easy and fast to configure and deploy. There is a possibility to create virtual COM ports with the Redisage Configurator to minimize number of cables.

C20 C21 C22 C23 C24 C25

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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 a 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 - Ethernet Converter 2 x RS232

C21 - Ethernet Converter 1 x RS485

C22- Ethernet Converter 2 x 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.

C23 - Ethernet Converter 4 x RS232

C24 - Ethernet Converter 4 x RS485

C25 - Ethernet Converter 2 x RS232 & 2 x RS485

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Enclosure dimensions

2U Module Enclosure.

98 x 22.5 x 56.4

Units: mm.

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Getting started

Power supply

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

LED indicators

Ethernet converters C20 - C22 have 3 LED indicators:

  • PW LED Blue - Power
  • ETH LED Green - Network activity 
  • ST LED Orange - USB-UART serial console mode

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Ethernet converters C23 - C25 have 5 LED indicators:

  • PW LED Blue - Power
  • ER LED Yellow - Error
  • ETH LED Green - Network activity 
  • COM LED Green - RS232/RS485 activity
  • CN LED Yellow - Console mode
  • SR LED Red - Service mode

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Configuration by the Web Page

Default configuration of the Ethernet Converters:

  • IP address: 192.168.100.100
  • Subnet mask: 255.255.255.0 
  • Gateway: 192.168.100.1
  • DNS 1: 192.168.100.1
  • DNS 2: 8.8.8.8

Default login details:

  • User name: admin
  • Password: admin123

To access to the web page open the web browser, type the IP address in the address bar and log in using the default user name and password. The device and a PC must be connected to the same Local Area Network.

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After a successful login, the status page will show the current status of the ports.

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To change the user name and password click on the user icon and select “Edit user”.

Ports configuration is available on the “Ports” page.

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Changing port’s service closes all sockets connected to the ports.

In the UDP mode, port number 15051 is reserved for UDP broadcast service.

Network settings can be changed on the “Network” page.

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On the “Device” page there are tools used to a firmware update, a factory reset and a device reboot.

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On the “Info” page there is information about firmware, model, serial number and frontend version.

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Configuration by Serial Console

The device has the ability to be reconfigured via a serial console. C20 - C22 require a dedicated USB/UART converter connected to the USB micro-B connector on the front of the device. C23 - C25 can be directly connected to a PC through a USB cable.

Procedure to enter serial console mode on C20 - C22.

  • Turn off the power of the device.
  • Connect the PC to the C1 micro-USB port of Ethernet converter using the dedicated USB/UART converter.
  • Open the serial console (default baud rate is 115200 bps).
  • Press and hold the S1 button (or connect Din pin to GND pin if the button is not mounted).
  • Turn on the power and wait a few seconds until the orange LED lights up.
  • Release the button (or disconnect Din pin from GND pin).

Procedure to enter serial console mode on C23 - C25.

  • Install STM32 Virtual COM Port Driver.
  • Turn off the power of the device.
  • Connect the PC to the C1 micro-USB port using the USB cable (or use the dedicated USB/UART converter).
  • Open the serial console (default baud rate is 115200 bps).
  • Press and hold the S1 button.
  • Turn on the power and wait a few seconds until the yellow CN LED lights up.
  • Release the button (or disconnect Din pin from GND pin).

Once this is done, log in using the default username and password, then change the network settings using "ipconfig" command.

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Ports configuration commands

In terms of ports configuration it is possible to change parameters like: service, baud rate, data bits, parity, stop bits and so on. UART commands are provided below.

  • uart
    • uart help
      Print the help message.

    • uart list
      List available uarts in the system.

      Example:
      uart list
      0: baud: 9600 bits: 8 stop_bits: 1 parity: none (service console)
      1: baud: 115200 bits: 8 stop_bits: 2 parity: odd (covered by cons.)
      2: baud: 9600 bits: 8 stop_bits: 1 parity: none
      3: baud: 1200 bits: 8 stop_bits: 2 parity: even termination: ON (R-COM)
      3: baud: 38400 bits: 8 stop_bits: 2 parity: none termination: OFF

    • uart PORT_NUMBER baud BAUD
      Set PORT_NUMBER baudrate to BAUD. BAUD value can be one of the following:
      2400, 4800, 9600, 14400, 19200, 38400, 57600, 115200.

      Example:
      uart 1 baud 9600

      WARNING: UART covered by console. Changes will take place after the reset.

    • uart PORT_NUMBER bits BITS
      Set bit length to BITS. BITS value can be one only 8.

      Example:
      uart 2 bits 8

    • uart PORT_NUMBER stop_bits STOP_BITS
      Set stop_bits length to STOP_BITS. STOP_BITS value can be only 1 or 2.

      Example:
      uart 2 stop_bits 1

    • uart PORT_NUMBER parity PARITY
      Set uart parity to PARITY. PARITY value can be one of the following: none, odd, even.

      Example:
      uart 3 parity even
    • uart PORT_NUMBER termination STATE
      Set uart termination to new STATE. STATE can be only ON or OFF.

      Example:
      uart 3 termination ON

  • uart_service
    • uart_service help
      Print the help message.

    • uart_service list
      List of uarts services status.

      Example:
      uart_service list
      1 state: ON service: Remote COM port: 1504 enc: YES
      2 state: OFF service: TCP Socket port: 1510
      3 state: OFF service: UDP Socket port: 1510

    • uart_service UART_NUMBER state STATE
      Set UART_NUMBER state to STATE. STATE value can be only ON or OFF.

      Example:
      uart_service 1 state ON

    • uart_service UART_NUMBER service SERVICE
      Set UART_NUMBER service to SERVICE. SERVICE value can be one of the following: Remote COM, TCP Socket, UDP Socket.

      Example:
      uart_service 1 service TCP Socket

    • uart_service UART_NUMBER port PORT_NUMBER
      Set UART_NUMBER port to PORT_NUMBER. PORT_NUMBER value can be any in the range: 1-65535.

      Example:
      uart_service 1 port 1501

    • uart_service UART_NUMBER enc ENC_STATE
      Set UART_NUMBER encryption to ENC_STATE. ENC_STATE can be only YES or NO.

      Example:
      uart_service 1 enc YES

      If ENC_STATE is YES then it will ask for a new password for encryption.
Network settings

The following commands might be helpful to change network settings according to target LAN parameters. 

  • ipconfig
    • ipconfig addr ADDRESS
      Set IP address to ADDRESS.

      Example:
      ipconfig addr 192.168.0.10

    • ipconfig mask NETMASK
      Set subnet mask to NETMASK (in dot-decimal format).

      Example:
      ipconfig mask 255.255.255.0

    • ipconfig mask BIT_COUNT
      Set subnet mask to BIT_COUNT bits.

      Example:
      ipconfig mask 24

    • ipconfig gateway GATEWAY_IP
      Set network gateway to GATEWAY_IP.

      Example:
      ipconfig gateway 192.168.0.1

    • ipconfig dhcp enable/disable
      Enable or disable DHCP client.

      Example:
      ipconfig dhcp enable

    • ipconfig dns1 ADDRESS
      Set primary DNS to ADDRESS, disable getting DNS from DHCP if enabled.

      Example:
      ipconfig dns1 192.168.100.1
    • ipconfig dns2 ADDRESS
      Set secondary DNS to ADDRESS, disable getting DNS from DHCP if enabled.

      Example:
      ipconfig dns2 1.1.1.1

  • eth_mac
    • eth_mac help
      Print the help message.

    • eth_mac default
      Set device’s MAC address to factory-default one.

    • eth_mac set MAC_ADDR
      Set device’s MAC address to MAC_ADDR. Accepts both dash and colon-separated formats.

      Example:
      eth_mac set 01-02-03-04-05-06

      Example:
      eth_mac set 01:02:03:04:05:06

  • http_port
    • http_port help
      Print the help message.

    • http_port PORT_NUMBER
      Set http port to PORT_NUMBER. A PORT_NUMBER value must be in range: 1-65535.

      Example:
      http_port 80

    • http_port status
      Print current http port.

      Example:
      http_port status
      A current http port is 80

  • telnet_port
    • telnet_port help
      Print the help message.

    • telnet_port PORT_NUMBER
      Set Telnet port to PORT_NUMBER. A PORT_NUMBER value must be in range: 1-65535.

      Example:
      telnet_port 23

    • telnet_port status
      Print current Telnet port.

      Example:
      telnet_port status
      A current telnet port is 23
Changing username or password

To change username or password, use user command.

Available commands:

  • user help
    Print the help message.

  • user mod_name USER_NAME NEW_NAME
    Change the user name to NEW_NAME. It fails if the name is used by another user.

    Example:
    user mod_name admin john

  • user passwd USER_NAME
    Change USER_NAME's password.

    Example:
    user passwd admin
    ****** <- here is entered password, but '*' appears instead

    Note: Everyone can change the password for themselves.

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Configuration by Telnet Console

Access to the Telnet console can be obtained using a serial terminal program. Configure the connection type to Telnet, enter the IP address and Telnet port number (23 by default).

Telnet console commands are the same as ones described in the serial console section.

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Redisage Configurator

To configure the RemoteCOM ports use the Redisage Configurator program. Redisage Configurator is an app used to emulate a connection between the converter and a PC as if it would be connected directly to the COM port.

Configuration procedure
  • Change the device port service to RemoteCOM. 
  • Set up a port number.
  • Enable or disable encryption.
  • If encryption is enabled create a password.
  • In the Redisage Configurator click add the device and then set the COM number and the service port.
  • If encryption is enabled enter a password.
  • Click save changes.
  • Connect to the configured serial COM port via terminal software.

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If any change is made to the port configuration, make sure to apply it with the “Save Changes” button.

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

Procedure to enter service mode for C20 - C22 converters
  • Turn off the power of the device.
  • Connect Ethernet converter to the dedicated USB/UART converter via the microUSB port.
  • Connect the USB/UART converter to the PC.
  • Open the serial console (default baud rate is 115200 bps).
  • Press and hold the S1 button.
  • Turn on the power.
  • Wait until the ST indicator (red LED) lights up.
  • Release the S1 button.
  • If the process is successful, service commands can be typed into the terminal.
Procedure to enter service mode for C23 - C25 converters
  • Install STM32 Virtual COM Port Driver (if it was not done before).
  • Turn off the power of the device.
  • Connect Ethernet converter directly to the PC (the dedicated USB/UART converter is not obligatory).
  • Open the serial console (default baud rate is 115200 bps).
  • Press and hold the S1 button.
  • Turn on the power.
  • Wait until the ST indicator (red LED) lights up.
  • Release the S1 button.
  • If the process is successful, service commands can be typed into the terminal.
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In the service mode, the “ipconfig” command can only show a last static IP address.

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