J1939/Modbus RTU Slave Gateway

The GW-7228 is a solution that provides a protocol conversion between J1939 and Modbus RTU. For J1939 network, the GW-7228 supports PDU1, PDU2, broadcast and destination specific type of J1939 messages. From the view of Modbus RTU network, the GW-7228 is a Modbus RTU slave to reply the request from Modbus RTU master. We provide Utility software for users to configure the parameters of J1939 / Modbus RTU of the GW-7228. The application fields can be Diesel power-train applications, In-Vehicle networks for trucks and buses, etc.

The following figure shows the application architecture for the GW-7228

 Applications

Diesel power-train applications
In-Vehicle networks for trucks and buses
Truck-Trailer connections
Fleet management systems
On Board Diagnostics
Vehicle Automation

Features

Provide PWR / J1939 / MODBUS indication LED
Built-in jumper to select 120 ohm terminal resister
Watchdog inside

J1939 Features

Transmission and reception of all types of J1939 messages, including PDU1, PDU2, broadcast and destination specific
J1939 Transport Protocol for transmission and reception of large messages (9 - 1785 bytes)
Supported BAM of Connection Management Message
Network addresses management

Modbus RTU Features

Support RS-232, RS-485 and RS-422
interfacesSupported Modbus RTU slave protocol
Configurable for Modbus Network ID(1~250)
Configurable baud rates of 2400, 4800, 9600, 19200, 38400, 57600, 115200 bps
Configurable for no, odd, or even parity and 1 or 2 stop bits
Support Function Code 03 / 04 / 06 / 16 of Modbus functions for reading and writing J1939 Messages