GW-7238D-G
Introduction
The GW-7238D is a gateway that provides conversion between J1939 and Modbus TCP/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
- Diesel power-train applications
- In-Vehicle networks for trucks and buses
- Truck-Trailer connections
- On Board Diagnostics
- Vehicle Automation

Ordering Information
PRODUCT SERIES | DESCRIPTION | QNT. | INQUIRY |
---|---|---|---|
This combination include other products.
Similar Products
CPU Module | |
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CPU | 80186, 80 MHz or compatible |
LED Indicators | |
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Status | PWR / J1939 / MODBUS / ERR |
Ethernet | |
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Protocol | RJ-45 with LED indicator / Modbus TCP |
COM Ports | |
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Ports | 1 x RS-232 1 x RS-485 (Self-turner inside) |
Baud Rate | 9600, 19200, 38400, 57600, 115200 |
Protocol | Modbus RTU |
J1939 | |
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Controller | NXP SJA1000T with 16 MHz clock |
Ports | 1 |
Baud Rate | 250 k |
Isolation | 1000 VDC for DC-to-DC, 2500 Vrms for photo-couple |
Terminal Resistor | Jumper for 120 Ω terminal resistor |
Specification | ISO-11898-2, CAN 2.0A and CAN 2.0B |
Power | |
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Consumption | 2 W |
Mechanical | |
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Dimensions (mm) | 122 x 72 x 33 (L x W x H) |
Installation | DIN-Rail |
Environment | |
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Operating Temperature | -25 ~ +75 ℃ |
Storage Temperature | -30 ~ +80 ℃ |
Humidity | 10 ~ 90% RH, Non-condensing |
- 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:
|
|||
Model | Support Protocol | Comm. Interface | |
---|---|---|---|
GW-7228 | J1939 | Modbus RTU lave | RS-232 RS-422 RS-485 |
GW-7238D | J1939 | Modbus TCP Server RTU Slave |
RS-232 RS-485 Ethernet |
GW-7433D | CANopen Master | Modbus TCP server RTU Slave |
RS-232 RS-485 Ethernet |
I-7231D | CANopen Slave | DCON Master | RS-232 RS-485 |
I-7232D | CANopen Slave | Modbus RTU Master | RS-232 RS-485 |
I-7241D | DeviceNet Slave | DCON Master | RS-232 RS-485 |
I-7242D | DeviceNet Slave | Modbus RTU Master | RS-232 RS-485 |
GW-7243D | DeviceNet Slave | Modbus TCP/RTU/ ASCII Master |
RS-232 RS-485 Ethernet |
GW-7434D | DeviceNet Master | Modbus TCP Server RTU Slave |
RS-232 RS-485 Ethernet |
GW-7552 | PROFIBUS DP-V0 Slave | Modbus RTU/ ASCII Master/Slave |
RS-232 RS-422 RS-485 |
GW-7553 | PROFIBUS DP-V0 Slave | Modbus TCP/RTU/ ASCII Master/Slave |
RS-232 Ethernet |
GW-7557 | PROFIBUS DP-V0 Slave | HART Master | RS-232 |
HART-710 | HART Master | Modbus RTU/ASCII Slave | RS-232 RS-422 RS-485 |
GW-5492 | BACnet/IP Server | Modbus RTU Master | RS-232 RS-485 Ethernet |
GW-5493 | BACnet/IP Server | Modbus TCP Client | RS-232 Ethernet |