GW-7238D

The GW-7238D J1939 to Modbus TCP server / Modbus RTU Slave Gateway is a gateway that provides conversion between J1939 and Modbus TCP/ Modbus RTU protocol. For J1939 network, the GW-7238D supports PDU1, PDU2, broadcast and destination specific type of J1939 messages. For Modbus TCP/RTU network, the GW-7238D is a Modbus TCP server / RTU slave to reply the request from Modbus TCP client / RTU master. Utility software is provided for users to configure J1939 and Modbus TCP/RTU setting in the GW-7238D. 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-7238D

Applications

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

Module specs

• RoHS Design
• Provide PWR / ERR / J1939 / MODBUS indication LEDs
• The built-in jumper to select 120 ohm terminal resister of CAN bus
• Watchdog inside

• 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 Features

• Support RS-232, RS-485 and Ethernet interfaces
• Support Modbus TCP server / RTU slave protocol
• Communication support both Modbus TCP / RTU to J1939 at the same time
• Configurable UART baud rates of 9600, 19200, 38400, 57600, 115200 bps
• Allow Max 5 Modbus TCP clients to access GW-7238D simultaneously
• Support Function Code 03 / 04 / 06 / 16 of Modbus functions for reading and writing J1939 Messages

Utility

• Provide Modbus network configuration interface
• Provide J1939 network configuration interface – Network Address / Device Name, etc
• Provide J1939 Input / Output configuration interface
• Provide Modbus monitoring interface

GW-7238D Utility Main Screen

Modbus monitoring table

Comparison Table

ICP DAS Fieldbus Gateways Comparison Table: