ICP DAS USA Inc

Manufacturer of Industrial Data Acquisition, Communication and Control Products

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J1939 to Modbus TCP server / RTU Slave Gateway. Includes CA-0910-C cable

GW-7238D

J1939 to Modbus TCP server / RTU Slave Gateway. Includes CA-0910-C cable

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Features

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

Applications

  • Diesel power-train 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
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

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

Utility

GW-7238D Utility Main Screen

modbus monitoring

Modbus monitoring table

Comparison Table

ICP DAS Fieldbus Gateways Comparison Table:

Support Protocol
GW-7228
GW-7238D
GW-7433D
I-7231D
I-7232D
I-7241D
J1939
J1939
CANopen Master
CANopen Slave
CANopen Slave
DeviceNet Slave
Modbus 
RTU lave
Modbus
TCP Server
RTU Slave
Modbus
TCP server
RTU Slave
DCON 
Master
Modbus 
RTU Master
DCON 
Master
Comm. Interface
RS-232 
RS-422 
RS-485
RS-232 
RS-485 
Ethernet
RS-232 
RS-485 
Ethernet
RS-232 
RS-485
RS-232 
RS-485
RS-232 
RS-485

Support Protocol
I-7242D
GW-7243D
GW-7434D
GW-7552
GW-7553
GW-7557
DeviceNet 
Slave
DeviceNet Slave
DeviceNet 
Master
PROFIBUS 
DP-V0 Slave
PROFIBUS 
DP-V0 Slave
PROFIBUS 
DP-V0 Slave
Modbus 
RTU Master
Modbus 
TCP/RTU/
ASCII Master
Modbus 
TCP Server 
RTU Slave
Modbus 
RTU/ASCII
Master/Slave
Modbus TCP/
RTU/ASCII 
Master/Slave
HART Master
Comm. Interface
RS-232 
RS-485
RS-232 
RS-485 
Ethernet
RS-232 
RS-485
Ethernet
RS-232 
RS-422 
RS-485
RS-232 
Ethernet
RS-232

Support Protocol
HART-710
GW-5492
GW-5493
HART Master
BACnet/IP Server
BACnet/IP Server
Modbus 
RTU/ASCII Slave
Modbus 
RTU Master
Modbus 
TCP Client
Comm. Interface
RS-232
RS-422 
RS-485
RS-232 
RS-485 
Ethernet
RS-232 
Ethernet

Specifications

Hardware
CPU
80186, 80 MHz or compatible
CAN Interface
Controller / Transceiver
NXP SJA1000T with 16 MHz clock / NXP 82C250
Channel number
1
Connector
5-pin screwed terminal block (CAN_L, CAN_H, N/A for others)
Baud Rate (bps)
250 k
Isolation
1000 VDC for DC-to-DC, 2500 Vrms for photo-couple
Terminator Resistor
Jumper for 120 Ω terminator resistor
Specification / Protocol
ISO-11898-2, CAN 2.0A and CAN 2.0B / J1939
UART Interface
COM 1 / Protocol
RS-232 / Modbus RTU
COM 1 Connector
5-pin screwed terminal block (TxD, RxD, RTS, CTS, GND)
COM 2 / Protocol
RS-485 (Self-turner inside) / Modbus RTU
COM 2 Connector
2-pin screwed terminal block (DATA+, DATA-)
Ethernet Interface
Controller
10/100Base-TX Ethernet Controller (Auto-negotiating, Auto_MDIX)
Connector / Protocol
RJ-45 with LED indicator / Modbus TCP
LED
Round LED
PWR / J1939 / MODBUS / ERR
Power
Power supply
Unregulated +10 ~ +30 VDC
Protection
Power reverse polarity protection, Over-voltage brown-out protection
Power Consumption
2 W
Mechanism
Installation
DIN-Rail
Dimensions
122mm x 72mm x 33mm (L x W x H)
Environment
Operating Temp.
-25 ~ 75 ℃
Storage Temp.
-30 ~ 80 ℃
Humidity
10 ~ 90% RH, non-condensing

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