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1 Features and System Configuration
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CJ-series EtherCAT Slave Units Operation Manual (W541)
SDO communications is used to perform message communications.
Whenever necessary, the EtherCAT master sends a command to a slave, and then the slave returns a
response to the EtherCAT master.
The following data communications can be performed.
• Reading and writing process data
• Setting slaves
• Monitoring slave status
Mailbox Communications (SDO Communications)
EtherCAT master
Slave
Ethernet frame
Slave
Slave
Slave
Logical process data
CRC
Data a
Data b
Data c
Ethernet
header
Ether
CAT
header
1st EtherCAT
datagram
2nd EtherCAT
datagram
3rd EtherCAT
datagram
Summary of Contents for CJ1W- ECT21
Page 1: ...Cat No W541 E1 02 OPERATION MANUAL SYSMAC CJ Series CJ1W ECT21 EtherCAT Slave Unit ...
Page 8: ...CONTENTS 6 CJ series EtherCAT Slave Units Operation Manual W541 ...
Page 30: ...Revision History 28 CJ series EtherCAT Slave Units Operation Manual W541 ...
Page 32: ...Sections in this Manual 30 CJ series EtherCAT Slave Units Operation Manual W541 ...
Page 148: ...Appendices A 34 CJ series EtherCAT Slave Units Operation Manual W541 ...
Page 149: ...I 1 I CJ series EtherCAT Slave Units Operation Manual W541 Index ...
Page 152: ...I 4 CJ series EtherCAT Slave Units Operation Manual W541 Index ...
Page 153: ......