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

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 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