Testing the Ethernet Network

Chapter 5. Setting Up the Ethernet

Ethernet cables are inserted into the Ethernet connector on the bottom panel of each CS4000 Mini Controller with Ethernet. The other end of the Ethernet cable is connected to a network hub. To connect the computer running Visual Supervisor to the network, insert one end of an Ethernet cable into the RJ-45 socket on the computer and the other end into the same network hub that the controllers are attached to. See Figure 1-1 on page 1-3 for a diagram showing the network connections.

If a computer and/or the controllers connected to each other via the Ethernet network become unable to communicate with each other, you can test the network using a command called ping. This command is available on all computers and on the Ethernet interface card.

NOTE: To use the ping command, TCP/IP must be installed on the Windows operating system of your computer. If the ping command is unavailable, see your System Administrator.

If parts of the network become unable to communicate you can ping a controller and/or computer on the network, from a different controller or computer also on the network, to determine if there are any physical malfunctions such as a bad cable connection. A successful ping indicates that the physical network is functioning correctly and it is, therefore, likely that a software malfunction is causing the communication problem. An unsuccessful ping indicates that the physical network is not functioning correctly. In this case, you should check the network connections and test the Ethernet cables to find the source of the problem. Refer to the Testing Ethernet Network Cables section later in this chapter.

You can test the network, using the ping command from the computer permanently attached to it, or you can use a laptop computer temporarily attached to an Ethernet interface card inside a controller on the network. If you are using a laptop computer, you must make sure that it is attached to the Ethernet interface card correctly. To do this, follow Steps 1 to 5 of Procedure 5-1on page 5-2.

To use the ping command from a laptop computer attached to the Ethernet network, you can set up a Hyperterminal connection. Use Procedure 5-4to set up Hyperterminal so you can ping the network from a laptop computer and use Procedure 5-5to ping the network from the host computer.

Procedure 5-4. Testing the Network From A Laptop Computer

CAUTION! Before you carry out this procedure, make sure jumper, J1, labeled ‘Prog’ on the Ethernet interface card is pulled off pins 1 and 2.

1. Open Windows Explorer on the Windows desktop.

NOTE: Different versions of the Windows operating system may have a different menu structure. Refer to the on-line help supplied with the Windows operating system.

a.Click the Start menu on the Windows desktop.

b.From the Start menu, select Programs.

c.From the Programs menu, select Accessories.

d.From the Accessories menu, select Communication.

e.From the Communication menu, select Hyperterminal.

f.Click Hyperterminal.

May 2002

T-38324-A

Page 5-17

CS4000 specifications

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