v Table of Contents
Figure 7.9: ................................................................... 64
Figure 7.10: ................................................................... 65
Figure 7.11: ................................................................... 65

7.2 Network Architecture and Example Code................................. 66

7.2.1 Polling Network Architecture ................................................ 67
Figure 7.12:Network Architecture-Polling ............................. 67
Figure 7.13:Flow chart-Polling Network ............................... 67
7.2.2 Event-handling Network Architecture ................................... 69
Figure 7.14:Network architecture: Event-handling ................ 69
Figure 7.15:Flow chart: Event-handling network .............. .... 69
7.2.3 Peer-to-Peer Network Architecture ..................... ...................71
Figure 7.16:Network architecture: Peer-to-peer ..................... 71
Figure 7.17:Flow chart: Peer-to-Peer network ............... ........71
Figure 7.18:#1 EDG-4508+U Configuration Utility .............. 72
Figure 7.19:#2 EDG-4508+U Configuration Utility .............. 73
Figure 7.20:Key-in information of #2 EDG-4508+U ............74
Figure 7.21:Key-in information of #1 EDG-4508+U ............74
Figure 7.22:Communication parameters of #1 EDG-4508+U 75
Figure 7.23:Communication parameters of #2 EDG-4508+U 75

7.3 Web-Based Configuration for EDG-4508+U/4516+U ............. 76

7.3.1 Access web page .................................................................... 76
7.3.2 Network Configuration ........................................................... 77
7.3.3 Port Configuration ............................................ ......................78
7.3.4 DI/O Event Configuration .............................. ........................79
7.3.5 Reset Configuration ............................................................ ....79

7.4 Cnsole Configuration for EDG-4508+U/4516+U..................... 79

7.4.1 Command List ................. ....................................................... 79
Chapter 8 Event and DI/O Monitoring......................... 86

8.1 Overview................................................................................... 86

8.2 Event and DI/O Monitoring....................................................... 86

8.2.1 Polling Monitoring ........ ......................................................... 86
8.2.2 Event Monitoring ................................................................... 87
8.2.3 DI Value Inverse Option ........................................................ 88

8.3 Programming I/O....................................................................... 90