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GFK-1541B Chapter 5 Ethernet Global Data 5-19
5
Example 3: EGD Configuration Using a Symbolic Name to Identify Consumers
There are three PLCs in this more complex EGD system using three Ethernet Global Data
exchanges. PLC1 contains two Ethernet Interfaces (designated A and B), one of which is both a
producer and a consumer. PLC2 is a consumer only. And PLC3 is both a producer and a
consumer. The Adapter Names are used as the symbolic names to identify the consumer PLCs.
No aliases have been configured, so DDP name resolution will be used. (See “Name Resolution”
in the chapter: “Network Administration Support”, for more information.) Network-synchronized
time stamping is not used. The identification of the PLCs and the details of the exchange are
shown in the tables below.
PLC1 PLC2
PLC3
P
C
P
C
P
C
Exchange ID = 3
Exchange ID = 1
Exchange ID = 2
AB
Producer/Consumer Information for Entire EGD System – EXAMPLE 3
Ethernet Interface(s)Your Name for
the PLC
(Equipment
Folder Name)
PC Local
Producer ID
Network
Adapter Name
CCU Device
Name
IP Address*
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 * Use your own IP addresses here.
Produced Exchanges Information – EXAMPLE 3
Local
Producer ID
Exchange
ID
Local Adapter Name Consumer
Type
Consumer
Address
Send
Type
Producer
Period
Reply
Rate
Status
Word
0.0.0.1 1 PLC1_A Name PLC3 Always 1000 0 Stat1
0.0.0.1 3 PLC1_B Name PLC2 Always 1000 0 Stat3
0.0.0.3 2 PLC3 Name PLC1_A Always 1000 0 Stat2
Variable List for Produced Exchanges – EXAMPLE 3
Local
Producer ID
Exchange
ID
Var
#
Name Address Length Type Description
0.0.0.1 1 1 Conveyor1 %R00100 5 WORD Conveyor1 in PLC1
0.0.0.1 3 1 Conveyor2 %R00105 5 WORD Conveyor2 in PLC1
0.0.0.3 2 1 Vat1 %R00300 10 WORD Vat1 in PLC3
0.0.0.3 2 2 Vat2 %R00310 10 WORD Vat2 in PLC3