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1 EtherCAT Network
GRT1-series EtherCAT Communication Unit - Operation Manual
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It is the "EtherCAT telegram" stored directly in an Ethernet frame that exchanges data regularly
between the EtherCAT Master Unit and Slaves.
Each "EtherCAT telegram" is configured with telegram header (data length, including address of one or
more Slaves, etc.), data, working counter (check bit).
When an Ethernet frame is compared to a "train", an EtherCAT telegram can be considered as "railway
car."
Ethernet
header
CRC
Ethernet data (Maximum 1498 bytes)
Data
Telegram
header
WKC
1...n EtherCAT telegram
EtherCAT
header
1st EtherCAT
telegram
2nd EtherCAT
telegram
n th EtherCAT
telegram
. . . . .
EtherCAT frame
Ethernet frame
WKC : Working counter
Summary of Contents for GRT1-ECT SmartSlice
Page 3: ...GRT1 series EtherCAT Communication Unit Operation Manual Revised March 2012 ...
Page 18: ...15 GRT1 series EtherCAT Communication Unit Operation Manual ...
Page 30: ...1 EtherCAT Network 1 8 GRT1 series EtherCAT Communication Unit Operation Manual ...
Page 38: ...2 EtherCAT Communication details 2 8 GRT1 series EtherCAT Communication Unit Operation Manual ...
Page 52: ...4 GRT1 ECT Details 4 10 GRT1 series EtherCAT Communication Unit Operation Manual ...
Page 76: ...6 GRT1 ECT Troubleshooting 6 12 GRT1 series EtherCAT Communication Unit Operation Manual ...
Page 136: ...A4 Appendix Object Dictionary A4 16 GRT1 series EtherCAT Communication Unit Operation Manual ...
Page 140: ...Revision 2 GRT1 ECT series EtherCAT Slave Unit User s Manual ...