ERC6021 Modbus RTU-TCP Gateway - Serial device server

In automation, telemetry and IoT applications, devices with RS232 port need to be read remotely. Due to the communication distance limitation of the serial port, difficulties and problems arise in automation applications. To eliminate this distance restriction, reading these devices over the Ethernet network may be requested as an alternative. So, such an application is desired, the serial port device will need to communicate via Ethernet. To do this, a serial converter, serial to ethernet conversion, is needed.

In this context, ERC6021 Ethernet serial converter is called a serial device server or serial converter. It allows connecting any port (RS232/RS485) to a computer network and monitoring and controlling it over the network. In this way, the need to keep a PC next to the device is eliminated. Using ERC6021, the communication distance problem is solved. While RS232 communication cable legth is limited, it is possible to track and monitor over the internet with today's Ethernet structure. Devices available in the industry such as energy analyzers, uninterruptible power supplies, meters, compressors, etc. can be read without any distance.

Network connection is realized via TCP/IP protocol and can be set as either client or server.

Besides the transparent data mode, ERC6021 can also be configured as Modbus RTU to TCP gateway so that any Modbus RTU device connected to its serial port can be monitored and controlled via Modbus TCP protocol over ethernet networks. Up to five(5) Modbus TCP connection can be established from any location on the ethernet network.

CONTROLLER

32 bit CISC architecture
100 MHz

ETHERNET

Device server mode (Client/Server TCP/IP transparent communication)
Modbus TCP gateway (Modbus RTU/TCP protocol conversion)
10/100 BaseT Ethernet
Dynamic IP(DHCP)
Firmware update over TCP/IP

SERIAL PORT

Two RS232 and one RS485
1/8 unit load for RS485 (up to 256 device connection to the bus)
±15kV electrostatic protection for RS232 port (IEC6100-4-2 Air Gap Discharge, HBM)
RS485 overvoltage protection
300 bps - 230400 bps baudrate (RS485 max: 115200bps)
Virtual COM port autobaud mode (RS232 baudrate adapted to virtual port's baudrate)
Compatible to IEC62056-21 AMR applicaitons
7-8 Databit, 1-2 stop bit, odd-even parity
9 pin DSUB connector(RS232)
5.08 mm screw terminals(RS485)