Omron NX-EC0112, User Manual

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6 Incremental Encoder Input Units
6 - 26 NX-series Position Interface Units User’s Manual (W524)
With synchronous I/O refreshing, the status of workpieces in multiple locations is monitored. Use this
method to synchronize Controller processing with the timing of when position data is obtained by more
than one Incremental Encoder Input Unit.
*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 of Synchronous I/O Refreshing on page 5-7 for details.
Precautions for Correct Use
If you use synchronous I/O refreshing, set the task period to a value within the specified refresh
cycle range of the Position Interface Unit.
6-6-3 Synchronous I/O Refreshing
I/O refreshing
Data
processing
I/O refreshing
Data
processing
Controller
Incremental Encoder
Input Units
Controller cycle
time
*1
Position data Position data
Cycle to obtain position data
and to execute commands
Cycle to obtain position data
and to execute commands
Synchronization cycle