ICP DAS USA GW-7238D, User Manual, Page: 3 / 52

GW-7238D J1939 to MBTCP Server / MBRTU Slave Gateway User’s Manual (Ver.1.1, May. 2013) --- 3
Table of Contents
1. Introduction .......................................................................................5
1.1 Mode of operation .............................................................................. 5
1.2 Features............................................................................................. 6
1.3 Specifications ..................................................................................... 6
2. Hardware ...........................................................................................8
2.1 Block Diagram.................................................................................... 8
2.2 Pin Assignment .................................................................................. 9
2.2.1 RS-232 & RS-485 & Power supply Interface.................................... 9
2.2.2 CAN bus Interface ............................................................................ 9
2.2.3 Ethernet Connect ........................................................................... 10
2.3 Hardware Connection .......................................................................11
2.3.1 CAN port connection .......................................................................11
2.3.2 Serial / Ethernet / Power port connection ....................................... 12
2.4 Terminator Resistor Settings ............................................................ 12
2.5 Init / Normal Dip-switch .................................................................... 14
2.5.1 Firmware Update Mode.................................................................. 14
2.5.2 Firmware Operation Mode.............................................................. 16
2.6 LED Indication.................................................................................. 16
2.7 5-digits 7-segment LED Displays ..................................................... 18
3. Software...........................................................................................21
3.1 Configuration Tool – GW-7238D Utility............................................. 21
3.2 GW-7238D Utility ............................................................................. 22
3.2.1 Connection Screen......................................................................... 22
3.2.2 Main Screen ................................................................................... 23
4. Communication Network ................................................................31
4.1 Modbus Network .............................................................................. 31
4.1.1 Supported Modbus Functions ........................................................ 31
4.1.2 Modbus Address ............................................................................ 31
4.2 J1939 Network ................................................................................. 33
4.2.1 Communication Methods................................................................ 33
4.2.2 Parameter Groups.......................................................................... 33
4.2.3 Suspect Parameter Number (SPN) ................................................ 34
4.2.4 J1939 Message Transmission........................................................ 35
4.2.5 J1939 Receiving Messages ........................................................... 36
4.2.6 Transport Protocol for Large Messages ......................................... 36
5. Application ......................................................................................37
5.1 Hardware Installation ....................................................................... 37