Omron NX-EC0112, User Manual

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8 Pulse Output Units
8 - 26 NX-series Position Interface Units User’s Manual (W524)
2
Click the EtherCAT Coupler Unit under Configurations and Setup .
Change the Enable Distributed Clock setting to Enabled (DC for synchronization) .
As a result, synchronous I/O refreshing is used.
With this I/O refreshing method, shortening the task period is given priority over synchronizing the I/O
timing with other NX Units.
With this I/O refreshing method, the timing of I/O is not consistent with the timing of I/O for NX Units that
use simultaneous I/O refreshing.
*1. For an NX-series CPU Unit, the task period of the primary periodic task or priority-5 periodic task is applica-
ble. For an NJ-series CPU Unit, only the task period of the primary periodic task is applicable.
Note Refer to Operation for Task Period Prioritized Refreshing on page 5-10 for details.
Precautions for Correct Use
If you use task period prioritized refreshing, set the task period to a value within the specified
refresh cycle range of the Position Interface Unit.
8-7-3 Task Period Prioritized Refreshing
I/O refreshing
Data
processing
I/O refreshing
Data
processing
Controller
Pulse Output Unit
Controller cycle
time
*1
Pulse output Pulse output
I/O processing cycle I/O processing cycle
Synchronization cycle