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1 EtherCAT Network
GX-series EtherCAT Slave Unit User’s Manual
1-
1 Ov
erview o
f Et
herCA
T
Net
w
o
rks
1
1-
1-2
S
tr
ucture of Ethe
rCA
T
It is the "EtherCAT datagram" stored directly in an Ethernet frame that exchanges data regularly
between the EtherCAT Master Unit and Slave Units.
Each "EtherCAT datagram" is configured with header (data length, including address of one or more
Slave Units, etc.), data, working counter (check bit).
When an Ethernet frame is compared to a "train", an EtherCAT datagram can be considered as "railway
car."
Ethernet
header
CRC
Ethernet data (Maximum 1498 bytes)
Data
Header
WKC
1...n EtherCAT datagram
EtherCAT
header
1st EtherCAT
datagram
2nd EtherCAT
datagram
n th EtherCAT
datagram
. . . . .
EtherCAT frame
Ethernet frame
WKC : Working counter
Содержание GX-AD0471
Страница 3: ...GX series EtherCAT Slave Units User s Manual Revised October 2018...
Страница 4: ......
Страница 34: ...1 EtherCAT Network 1 8 GX series EtherCAT Slave Unit User s Manual Separate from Unit power supply when wiring...
Страница 42: ...2 EtherCAT Slave Unit 2 8 GX series EtherCAT Slave Unit User s Manual...
Страница 66: ...4 Installation and Wiring 4 18 GX series EtherCAT Slave Unit User s Manual...
Страница 84: ...5 EtherCAT Communications 5 18 GX series EtherCAT Slave Unit User s Manual...
Страница 98: ...6 Basic Specifications of Slave Units 6 14 GX series EtherCAT Slave Unit User s Manual...
Страница 178: ...7 Digital I O Slave Unit 7 80 GX series EtherCAT Slave Unit User s Manual...
Страница 206: ...8 Analog I O Slave Unit 8 28 GX series EtherCAT Slave Unit User s Manual...
Страница 280: ...11 Expansion Unit 11 20 GX series EtherCAT Slave Unit User s Manual...
Страница 388: ...A Appendix A 84 GX series EtherCAT Slave Unit User s Manual...
Страница 392: ...Revision 2 GX series EtherCAT Slave Unit User s Manual...
Страница 393: ......