ERC6W41 WIFI Modbus RTU-TCP Gateway

In automation, telemetry and IoT applications, devices with RS232 or RS485 port already has been used widely and needed 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 wireless network may be requested as an alternative. So, such an application is desired, the serial port device will need to communicate via Wireless networks. To do this, a serial converter, serial to wifi conversion, is needed.

In this context, ERC6W11 is called as a WiFi Modbus TCP Gateway-Serial device server. It allows connecting any port (RS232/RS485) to a wireless(WiFi) computer network and monitoring and controlling it over it. In this way, the need to keep a PC next to the device is eliminated. Using ERC6W11, 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 wireless network 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(serial device server), ERC6W11 can also be configured as Modbus TCP gateway so that any Modbus RTU device connected to its serial port can be monitored and controlled via Modbus TCP protocol over wireless networks. Up to five(5) Modbus TCP connection can be established from any location on the network.

All our ERC6WX1 wireless Modbus TCP gateway and device server familiy has AP(access point) feature for client(STA) connection up to 10 devices so there is no need to use any other external device.

CONTROLLER

32 bit CISC architecture
100 MHz

WIFI

Modbus TCP gateway (Modbus RTU/TCP protocol conversion)
Serial device server(Serial to WiFi TCP/IP transparent communication)
Client/Server TCP/IP connection
2.4 GHz frequency
Access Point(AP) / Station(STA) mode
WPA/WPA2 Enterprise/Personal, WPA2 SI, WPA3 SAE, OWE
Dynamic IP(DHCP)
Up to 10 clients in AP mode

ETHERNET

Management via ERCProbe software
Firmware upgrade

SERIAL PORT

Four 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)