5

Before You Configure EGD Exchanges

Before you begin configuring EGD exchanges you will need to collect a considerable amount of information about the PLCs in your system. It is a good idea to record this data so that when you are ready to configure the exchanges in the PLC programming software, all pertinent information will be easily found. The tables that follow represent one way of recording this information. Use these tables or design your own method for recording the information outlined below.

Record Your EGD System Information

ƒDetermine for each PLC what data needs to be produced and consumed.

ƒMake a list of the adapter names and IP addresses of the Ethernet Interfaces in the PLCs that are being used to produce or consume the exchanges. (See the topic “Naming Conventions” if these names have not already been configured.)

ƒDetermine whether you will identify EGD consumers using a Group ID, IP address, or symbolic name.

ƒIf you choose to use symbolic names, you can use either local name table, DDP, or DNS name resolution.

￿Local name table name resolution uses aliases configured locally in each producer PLC in the Name Resolution and Routing Table Rack Operation in the PLC programming software (if supported). If using aliases make a list of them.

￿DDP uses the adapter name of the remote Ethernet Interface for name resolution. The adapter name of an Ethernet Interface is assigned in Module Configuration.

￿DNS name resolution uses a DNS server at which DNS names are configured. If using DNS names, make a list of them. Note that DNS names must be different than the adapter name configured for the Ethernet Interface and must be defined at the remote DNS name server before use.

See “Name Resolution” in the chapter: “Network Administration Support” for more information.

ƒDefine the exchanges of data you want to configure.

ƒMake a list of the CCU device names used to connect to the producer and consumer PLCs. (See the topic “Naming Conventions” if these names have not already been configured.) CCU device names are the names used to identify the Ethernet Interface as configured in the Communication Configuration Utility.

Use tables similar to the following to record this information.

Producer/Consumer Information for Entire EGD System – EXAMPLE

Your Name

P

C

Local

Ethernet Interface(s)

 

for the PLC

 

 

Producer

Network

CCU Device

IP Address

(Equipment

 

 

ID

Adapter Name

Name

 

Folder Name)

 

 

 

 

 

 

PLC1

X

X

0.0.0.1

PLC1_A

PLC1_A

10.0.0.23

PLC1

X

 

0.0.0.1

PLC1_B

PLC1_B

10.0.0.34

PLC2

 

X

0.0.0.2

PLC2

PLC2

10.0.0.41

PLC3

X

X

0.0.0.3

PLC3

PLC3

10.0.0.50

P=Producer C=Consumer

5-10

TCP/IP Ethernet Communications for the Series 90™ PLC User's Manual– May 2002

GFK-1541B

Page 159
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GE GFK-1541B manual Before You Configure EGD Exchanges, Record Your EGD System Information