Schneider Optics Modicon Quantum Ethernet manual Improper Network Topologies

Installing and Configuring the Module

Consult your network administrator to see if any of these conditions apply. If they do, follow the directions on page 20 for changing the default configuration.

Note: If you will be changing the default configuration, you should stop the controller, then install the module, then change the configuration before starting the controller again.

The Ethernet web embedded server module only reads its configuration data at power-up and when it is reset. Whenever the configuration data is changed, the module must be reset, either by hot swapping or through a reset command in the MSTR block (see page 37). Once the module is installed, stopping and restarting the controller will not reset it.

2.1.2Verifying that the Network Has Been Constructed Properly

You should not connect an Ethernet web embedded server module directly to another device with a length of cable. For the network to operate properly, you must route the cable for each device through an Ethernet hub. Hubs are widely available and can be purchased from many suppliers.

NOE

NOE

NOE

Figure 8 Improper Network Topologies

NOE

NOE

Hub

Figure 9 Proper Network Topology

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