Omron NX-ECC201 User Manual page 182

9 Setting Up Slave Terminals
Precautions for Correct Use
• If you turn ON the power to an EtherCAT Slave Terminal before you create or transfer the
Unit configuration information to the Slave Terminal, the TS indicator on the front panel of the
EtherCAT Coupler Unit will flash green at 0.5-second intervals. This means that the Slave
Terminal is operating without any Unit configuration information.
In this state, the Slave Terminal will start and operate based on the physical Unit configura-
tion when the power is turned ON. The Unit configuration is not checked.
If the Slave Terminal is connected to the built-in EtherCAT port on an NJ-series CPU Unit, I/O
ports are not created automatically and accessing the Slave Terminal from the user program
is not possible. Always create the Unit configuration and transfer it to the EtherCAT Coupler
Unit.
• To refresh I/O for EtherCAT Slave Terminals that operate with synchronous I/O refreshing in
DC Mode, create the configuration of all EtherCAT Slave Terminals and make the settings for
the EtherCAT Slave Terminals first, and then set the primary period in the Task Setup in the
Controller Setup of the Sysmac Studio. If you set a primary period that is shorter than the lon-
gest NX bus refresh cycle of all of the EtherCAT Slave Terminals, it will not be possible to
transfer the parameter settings of the EtherCAT Slave Terminals through the CPU Unit. If you
try to transfer the parameter settings through the USB port on the EtherCAT Coupler Unit, a
Synchronization Cycle Setting Error will occur. You can use the Sysmac Studio to check to
see if the NX bus refresh cycle exceeds the primary period. If you import a Slave Terminal
configuration, use the Sysmac Studio to see if the primary period is shorter than the NX bus
refresh cycle. Refer to Primary Period Setting for Synchronous I/O Refreshing on page 10-10
in 10-3-4 I/O Refreshing Method Operation on page 10-7 for the checking procedure.
 Creating Unit Configuration Information Based on the Actual Configuration
This method uses the physical Unit configuration for the Unit configuration information.
Connect the Sysmac Studio to the EtherCAT network through the CPU Unit. Compare and merge
with the actual network configuration to read the actual network configuration information. Then use
comparing and merging with the actual Unit configuration to read the Unit configuration of the Ether-
CAT Slave Terminal. Finally, set the settings as an EtherCAT slave on the EtherCAT Configuration
Edit Tab Page, and create the Slave Terminal configuration and operation settings on the Edit Slave
Terminal Configuration Tab Page.
Refer to the Sysmac Studio Version 1 Operation Manual (Cat. No. W504) for details on comparing
and merging with the actual EtherCAT network configuration.
Refer to Comparing and Merging with Actual Unit Configuration of the Slave Terminal on page 9-25
under 9-2-7 Sysmac Studio Functions Used as Required on page 9-25 for details on the comparing
and merging with the actual Unit configuration of the Slave Terminal.
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NX-series EtherCAT Coupler Unit User's Manual (W519)