System Configuration Of Cj-Series Ethercat Slave Unit - Omron CJ1W- ECT21 Operation Manual

1-3 System Configuration of CJ-series
EtherCAT Slave Unit
An example of a system configuration for a CJ-series EtherCAT Slave Unit is shown below.
(G) Configuration Software
.xml
(F) ESI files
(D) CX-Programmer
Letter
(A)
EtherCAT master
(B) CJ-series Ether-
CAT Slave Unit
(CJ1W-ECT21)
(C) CJ-series CPU
Unit
(D)
CX-Programmer
CJ-series EtherCAT Slave Units Operation Manual (W541)
Built-in EtherCAT port
(E) Communications cable
Ethernet cables
(C) CJ-series
CPU Unit
Item
The EtherCAT master manages the EtherCAT network, monitors the status
*1
of the slaves and exchanges I/O data with the slaves.
The CJ-series EtherCAT Slave Unit can perform the following functions
over an EtherCAT network.
• Process data communications with the EtherCAT master.
• Message communications (SDO communications) with the EtherCAT
master.
• Exchange data between the CJ-series CPU Unit and the EtherCAT mas-
ter.
The main Unit that controls a CJ-series PLC. The CPU Unit refreshes I/O
*2 for other Units and slaves, etc.
The CX-Programmer runs on a personal computer and it is used to config-
*3
ure I/O Communication Area Setting Table to communicate between the
CJ-series CPU Unit and the EtherCAT Slave Unit and to program, monitor,
and debug the CJ-series PLC.
1 Features and System Configuration
(A) EtherCAT master
(B) CJ-series
EtherCAT Slave Unit
CJ1W-ECT21
Input port
Output port
Description
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