A
communications interface solution for GE
Description: The GE-EGD (Ethernet Global Data) driver
allows the FieldServer to transfer data to and from devices over Ethernet
using GE-EGD (Ethernet
Global Data) protocol. There are two Ethernet ports standard on the FieldServer.
The FieldServer can emulate either a Server or Client. GE Fanuc Automation
and GE Drive Systems developed an Ethernet Global Data, or EGD, exchange
for PLC and computer data in 1998. EGD uses UDP or datagram messages for
fast transfer of up to 1400 bytes of data from a producer to one or more
consumers. UDP messages have much less overhead that the streaming TCP
connection used for programming or CommReq’s over SRTP Ethernet.
Like Genius® broadcast input or directed control messages, UDP messages
are not acknowledged. They can be sent at short intervals. Chances of one
or more messages being dropped are small on a local area network. As a
client the FieldServer acts as a EGD consumer. As a master the FieldServer
acts as a EGD producer.
Formal Driver Type: Ethernet, Client or Server
Connection type:
- 10BaseT Ethernet
- RJ 45 Connector
Devices Tested:
- SLC5/05 Processor
- WonderWare
