WAGO I/O System 750 Series - Page 4

iv • Table of Contents
WAGO-I/O-SYSTEM 750
DeviceNet
2.8.2 Grounding Function...........................................................................37
2.8.3 Grounding Protection.........................................................................38
2.9 Shielding (Screening).............................................................................39
2.9.1 General...............................................................................................39
2.9.2 Bus Conductors..................................................................................39
2.9.3 Signal Conductors..............................................................................39
2.9.4 WAGO Shield (Screen) Connecting System.....................................40
2.10 Assembly Guidelines / Standards...........................................................40
3 Fieldbus Coupler.......................................................................................42
3.1 Fieldbus Coupler 750-346......................................................................42
3.1.1 Description.........................................................................................43
3.1.2 Hardware............................................................................................44
3.1.2.1 View..............................................................................................44
3.1.2.2 Device Supply...............................................................................45
3.1.2.3 Fieldbus Connection .....................................................................45
3.1.2.4 Display Elements ..........................................................................46
3.1.2.5 Configuration Interface.................................................................47
3.1.2.6 Hardware Address (MAC ID).......................................................47
3.1.2.7 Setting the Baud Rate....................................................................48
3.1.3 Operating System...............................................................................48
3.1.4 Process Image....................................................................................49
3.1.5 Data Exchange...................................................................................50
3.1.5.1 Communication Interfaces............................................................51
3.1.5.2 Memory Areas ..............................................................................51
3.1.5.3 Addressing ....................................................................................52
3.1.6 Configuration Software .....................................................................54
3.1.7 Starting up DeviceNet Fieldbus Nodes..............................................54
3.1.7.1 Connecting the PC and Fieldbus Node.........................................54
3.1.7.2 Setting the MAC ID and Baud Rate .............................................54
3.1.7.3 Configuration with Static Assembly.............................................55
3.1.8 LED Display......................................................................................59
3.1.8.1 Node status – Blink code from the 'I/O' LED...............................60
3.1.9 Technical Data...................................................................................67
4 DeviceNet ...................................................................................................68
4.1 Description .............................................................................................68
4.2 Network Architecture.............................................................................69
4.2.1 Transmission Media...........................................................................69
4.2.1.1 Type of Cable................................................................................69
4.2.1.2 Cable Types ..................................................................................69
4.2.1.3 Maximum Bus Length ..................................................................70
4.2.2 Cabling...............................................................................................70
4.2.3 Network Topology.............................................................................72
4.2.4 Network Grounding...........................................................................73
4.2.5 Interface Modules..............................................................................73
4.3 Network Communication .......................................................................74
4.3.1 Objects, Classes, Instances and Attributes ........................................74
4.4 Module Characteristics...........................................................................75
4.4.1 Communication Model......................................................................75