Table Of Contents - ICP DAS USA GW-7228 User Manual

1. Introduction ....................................................................................... 5
1.1 Mode of operation .............................................................................. 6
1.2 Features ............................................................................................. 6
1.3 Specifications ..................................................................................... 6
2. Hardware ........................................................................................... 8
2.1 Block Diagram .................................................................................... 8
2.2 Pin Assignment .................................................................................. 9
2.3 Hardware Connection ...................................................................... 10
2.3.1 CAN port connection ...................................................................... 10
2.3.2 Serial port connection...................................................................... 11
2.4 Terminator Resistor Settings ............................................................ 12
2.5 Watchdog Timer Settings ................................................................. 13
2.6 Init / Normal Dip-switch .................................................................... 13
2.6.1 Firmware Update Mode .................................................................. 13
2.6.2 Firmware Operation Mode .............................................................. 16
2.7 LED Indication .................................................................................. 17
2.8 Cable Selection ................................................................................ 18
3. Software ........................................................................................... 20
Configuration Tool - GW-7228 Utility ............................................... 20
3.1
3.2 GW-7228 Utility ................................................................................ 21
3.2.1 Connection Screen ......................................................................... 21
3.2.2 Main Screen ................................................................................... 23
4. Communication Network ................................................................ 30
4.1 Modbus Network .............................................................................. 30
4.1.1 Supported Modbus Functions ........................................................ 30
4.1.2 Modbus Address ............................................................................ 30
4.2 J1939 Network ................................................................................. 32
4.2.1 Communication Methods ................................................................ 32
4.2.2 Parameter Groups .......................................................................... 32
4.2.3 Suspect Parameter Number (SPN) ................................................ 33
4.2.4 J1939 Message Transmission ........................................................ 34
4.2.5 J1939 Receiving Messages ........................................................... 35
4.2.6 Transport Protocol for Large Messages ......................................... 35
5. Application ...................................................................................... 36
5.1 Hardware Installation ....................................................................... 36
5.2 GW-7228 Utility Configuration .......................................................... 40
5.2.1 Modbus Network Configuration ...................................................... 40
GW-7228 J1939/Modbus RTU Slave Gateway User's Manual (Ver 1.3, Apr/2011) ------------- 3

Table of Contents